Grundfos AR Installation And Operating Instructions, Supplement

Grundfos
Brand
Grundfos
Model
AR
Type
Installation And Operating Instructions, Supplement
AR control unit
Installation and operating instructions, supplement
GRUNDFOS INSTRUCTIONS
Other languages
http://net.grundfos.com/qr/i/91834764
English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
Page
1. Symbols used in this document
2. General information
2.1 Introduction
These installation and operating instructions form a supplement
to the instructions for the DMX 221, DMX 226, DMH 25X and
DMH 28X dosing pumps when used with an AR control unit. The
AR control unit is considered part of the pump. All Information not
given in this manual is equivalent to the information in the pump
manual.
If you require further information or if any problems arise, which
are not described in detail in this manual, please contact the
nearest Grundfos company.
2.2 Service documentation
If you have any questions, please contact the nearest Grundfos
company or service workshop.
3. Information about the product
3.1 Mounting variants
The AR control unit is available in two versions:
• standard version mounted on the terminal box of the dosing
pump.
• version for wall mounting: The control unit is mounted on a
wall mounting plate.
Fig. 1 AR control unit for wall mounting
1. Symbols used in this document
2
2. General information
2
2.1 Introduction
2
2.2 Service documentation
2
3. Information about the product
2
3.1 Mounting variants
2
3.2 Connecting cables and plugs
3
3.3 Enclosure class
3
3.4 EMC protection
3
3.5 Ambient and operating conditions
3
3.6 Dimensional sketches
4
3.7 Weight
7
3.8 Materials
7
3.9 Sensors
7
4. Installation
7
4.1 General information on installation
7
4.2 Installation location
7
5. Electrical connections
7
5.1 Switching on/off
7
6. Mounting
8
6.1 Mounting on the pump terminal box
8
6.2 Wall mounting
8
7. Connecting signal lines for AR control unit
8
7.1 Control data (AR control unit)
8
7.2 Connection diagram for the AR control unit
9
7.3 Accessories: cable and plug for the AR control unit
11
8. Using the pump electronics
12
8.1 Control and display elements
12
8.2 Display test
12
8.3 Menu levels
12
8.4 General functions of the electronics
12
8.5 Signal outputs
14
8.6 First function level
15
8.7 Second function level
18
8.8 Service level
22
8.9 Resetting to default settings
24
8.10 Creating a master/slave application
24
9. Disposal
24
Warning
These installation and operating instructions are also
available on www.grundfos.com.
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
If these safety instructions are not observed, it may
result in personal injury.
Caution
If these safety instructions are not observed, it may
result in malfunction or damage to the equipment.
Note
Notes or instructions that make the job easier and
ensure safe operation.
Note
Also observe the installation and operating
instructions for the dosing pump.
Note
All mounting variants can only be ordered together
with a dosing pump. The AR control unit is
considered part of the pump. The control unit cannot
be retrofitted!
TM03 7193 4506
Pos. Components
A Hall sensor cable
B Power supply cable
C Motor cable
Motor:siehe Motorentypenschild
Run
Manual
1/min
Start
Stop
1
Mode
110-120V
220-240V
42 3 5
Up
5
2
1
4
3
Menu
Down
A
C
B
English (GB)
3
3.2 Connecting cables and plugs
3.3 Enclosure class
• IP65 (maximum).
3.4 EMC protection
Tests according to
DIN EN 50081-1
DIN EN 50082-2
DIN ENV 50140
DIN EN 50141
DIN V ENV 50204
DIN EN 55022 class B
DIN EN 61000-4-2
DIN EN 61000-4-5.
3.4.1 Required energy
Power supply for AC voltage, mains frequency 50/60 Hz
Maximum permissible mains impedance
(0.084 + j 0.084) Ohm (testing according to DIN EN 61000-3-11).
These details apply to 50 Hz.
3.5 Ambient and operating conditions
• Permissible ambient temperature: 0 °C to +40 °C.
• Permissible storage temperature: -20 °C to +70 °C.
• Permissible air humidity: max. relative humidity:
70 % at +40 °C, 90 % at +35 °C.
Note
If there is a large distance between the dosing pump
and an AR control unit mounted on the wall, the
power supply cable and the motor cable can be
extended up to 20 metres
(cable cross-section: 1 mm
2
).
Warning
The enclosure class is only met if the sockets are
protected! The data regarding the enclosure class
applies to AR control units with correctly inserted
plugs or screwed-on caps.
Rated voltage Permissible deviation from rated value
220-240 V ± 5 %
110-120 V ± 5 %
Warning
The AR control unit is NOT approved for operation in
potentially explosive areas!
Caution
Pumps with AR control unit are only suitable for
indoor use! Do not install outdoors!
English (GB)
4
3.6 Dimensional sketches
Fig. 2 AR control unit mounted on a pump terminal box
Fig. 3 AR control unit for wall mounting
TM03 7195 4506
Nicht im Still stand verstellen
Adjustable only in opersti on
Nes pas tournen a l `arret
0
10
20
30
40
70
80
90
100%
71
174
107
174
TM03 7196 4506
Motor:siehe Motorentypenschild
Run
Manual
1/min
Start
Stop
1
Mode
110-120V
220-240V
42 3
5
Up
5
2
1
4
3
Menu
Down
119
16
71
6
108
254
238
174
108
125
English (GB)
5
Fig. 4 AR control unit mounted on a DMX 221
Fig. 5 AR control unit mounted on a DMX 226
TM03 7198 4506
Nicht im Stillstand verstellen
Adjustab le only in op erstion
Nes pas tournen a l`arret
0
10
20
30
40
70
80
90
100%
319
275
205
175
59
TM03 7199 4506
gesamt ca. 390
381
71
101
1 2 3 5
4
Run
1/min
Manual
107
Start
Stop
Mode
110-120V
220-240V
521 4
3
Down
Menu
Up
Nes pas tournen a l`arret
Adjustable only in operstion
Nicht im Stillstand verstellen
174
1
72
66
154
4
5
°
Total approx. 390
English (GB)
6
Fig. 6 AR control unit mounted on a DMH
TM03 7200 4506
gesamt ca. 198
1 23 54
Manual
Run
1/min
Mode
Down
Start
Stop
Menu
Up
2
220-240V
1 4
3
5
110-120V
contact/analog
tank level
output/off
flow / MBS fault / stroke
gesamt ca.330
174
71
4
5
°
142.
2
90
75
108
Total approx. 198
Total approx. 330
English (GB)
7
3.7 Weight
Weight of AR control unit: 0.5 kg.
3.8 Materials
AR control unit enclosure
• Upper part of enclosure: PPO blend
• Lower part of enclosure: aluminium.
3.9 Sensors
Stroke control
Dosing pumps operated via a AR control unit must be provided
with a Hall sensor.
Length of Hall sensor cable for all pump types (depending on
mounting variant): 0.4 m or 5 m.
For DMX 226 and DMH dosing pumps, a stroke sensor must be
installed in the bearing cover.
• Dosing controller: DMX 221.
• Diaphragm leakage sensor: DMX 221 and DMX 226.
4. Installation
4.1 General information on installation
4.2 Installation location
4.2.1 Space required for operation and maintenance
The control elements must be easily accessible during operation.
4.2.2 Permissible ambient influences
• Permissible ambient temperature: 0 °C to +40 °C.
• Permissible air humidity: max. relative humidity:
70 % at +40 °C, 90 % at +35 °C.
5. Electrical connections
Make sure that the control unit and pump are suitable for the
electricity supply on which they will be used.
5.1 Switching on/off
• Do not switch on the power supply until you are ready to start
the pump.
Caution
Without Hall sensor the linear deviation will
deteriorate to more than 10 %!
With Hall sensor, the linear deviation will be less than
2 %.
Note
If there is a large distance between the dosing pump
and an AR control unit mounted on the wall, the Hall
sensor cable can be extended up to 20 metres (cable
cross-section: 0.25 mm
2
).
Note
If there is a large distance between the dosing pump
and an AR control unit mounted on the wall, the
extension cables for the dosing controller and the
diaphragm leakage sensor have to be ordered
separately!
Product number 96609032 (321-223)
5-core cable with coupler socket/plug.
Warning
Observe the specifications for the range of
applications and installation location described in
sections 2. General information and 4.2 Installation
location.
Caution
Carefully tighten the screws. Otherwise the plastic
housing may be damaged.
The function of the finally mounted control unit must
be tested together with the dosing pump!
The nameplate must be stuck to the mounting plate
or to the upper part of the control unit!
Note
The pump must be installed in a position where it is
easily accessible during operation and maintenance
work.
Caution
The installation site must be under cover!
Ensure that the enclosure class of motor and pump is
not affected by the atmospheric conditions.
Pumps with AR control unit are only suitable for
indoor use! Do not install outdoors!
Note
Also observe the installation and operating
instructions for the dosing pump.
Warning
Electrical connections must only be carried out by
qualified personnel!
Disconnect the power supply before connecting the
power supply cable and the relay contacts!
Before connecting the power supply cable, check
that the rated voltage stated on the pump nameplate
corresponds to the local conditions!
Do not make any changes to the power supply cable
or plug!
Observe the local safety regulations!
Warning
The pump housing must only be opened by
personnel authorised by Grundfos!
Warning
Protect the cable connections and plugs against
corrosion and humidity.
Only remove the protective caps from the sockets
that are being used.
Caution
The power supply must be electrically isolated from
the signal inputs and outputs.
Caution
The pump can be automatically started by
connecting the power supply!
Caution
Before switching on the pump, check that it is
installed correctly. See section 4. Installation.
Note
The control unit needs a booting time of minimum 5
seconds. Therefore, start the pump by pressing the
"Start/Stop" button. Do not start the pump via the
mains.
In case of mains interruptions or disturbances, the
pump may stop.
English (GB)
8
6. Mounting
6.1 Mounting on the pump terminal box
General conditions:
• Pump with AC motor (Grundfos motor)
• Pump with Hall sensor (stroke indication)
• Pump types:
– DMX 221
– DMX 226 up to 400 l/h and 3.5 bar maximum counter-
pressure
– DMH.
6.2 Wall mounting
• Fasten the control unit to the wall by means of the enclosed
fastening material.
• Connect the power supply cable to a protective motor switch
(for size, see nameplate).
• Connect the control line.
7. Connecting signal lines for AR control unit
7.1 Control data (AR control unit)
Functions for electronic control
Operating modes for electronic control
Inputs and outputs
Caution
The control unit is factory-mounted on the pump
terminal box by Grundfos!
At each intervention in the control unit, the e.s.d.
(electrostatic discharge) protection must be
observed!
Warning
Electrical connections must only be carried out by
qualified personnel!
Disconnect the power supply before connecting the
power supply cable and the relay contacts!
Observe the local safety regulations!
Warning
The pump housing must only be opened by
personnel authorised by Grundfos!
Warning
Protect the cable connections and plugs against
corrosion and humidity.
Only remove the protective caps from the sockets
that are being used.
Warning
The enclosure class is only met if the sockets are
protected! The data regarding the enclosure class
applies to AR control units with correctly inserted
plugs or screwed-on caps.
Caution
The power supply must be electrically isolated from
the signal inputs and outputs.
Caution
There is a risk that the unit connected to the current
output could be destroyed!
If the pump connected to the current output has a
GND-PE reference, the current output may increase
to a multiple of 20 mA!
If this is the case, connect an isolating amplifier
between the current output and the unit.
Continuous-operation button for function test and dosing head
deaeration
Memory function (stores a maximum of 65,000 pulses)
Two-stage tank-empty signal
(e.g. via Grundfos tank-empty sensor)
Stroke signal/pre-empty signal (adjustable)
Dosing controller function (only with sensor - optional)
Diaphragm leakage detection (only with sensor - optional)
Access-code-protected settings
Remote on/off
Hall sensor (for motor monitoring)
Operating hours counter (cannot be reset)
Manual
Stroke frequency: manually adjustable
Contact signal control
Multiplier (1:n) and divisor (n:1) (optional)
Current signal control 0-20 mA / 4-20 mA
Adjustment of stroke frequency proportional to the current signal
Weighting of current input
Inputs
Contact signal
Maximum load: 12 V, 5 mA
Minimum pulse length: 10 ms
Minimum pause time: 10 ms
Current 0-20 mA Maximum load: 22 Ω
Remote on/off Maximum load: 12 V, 5 mA
Tank-empty signal Maximum load: 12 V, 5 mA
Dosing controller and diaphragm leakage sensor
Outputs
Current 0-20 mA Maximum load: 350 Ω
Error signal
Maximum ohmic load:
50 VDC / 75 VAC, 0.5 A
Stroke signal Contact time/stroke: 200 ms
Pre-empty signal
Maximum ohmic load:
50 VDC / 75 VAC, 0.5 A
English (GB)
9
7.2 Connection diagram for the AR control unit
Fig. 7 Connection diagram
7.2.1 Diaphragm leakage detection / dosing controller
Socket 1
For diaphragm leakage detection (MBS) and/or dosing controller
(DC).
The diaphragm leakage detection and dosing controller are
pre-assembled with an M12 plug for socket 1.
If the diaphragm leakage sensor and the dosing controller are to
be used at the same time, both cables must be assembled in one
plug.
• Connect the cables according to the following table.
* MBS is an abbreviation of the function in German language "Membranleckagesignalisierung" = diaphragm leakage detection
7.2.2 Current output / remote on/off
Socket 2
For the remote on/off input and current output.
TM03 6355 4506
Warning
For the connection of one cable, use a plug adapter
with simple cable entry, for the connection of two
cables, use a plug adapter with double cable entry,
otherwise the protection will be lost!
2
1
2
3
4
4
1
2
3
4
5
1
2
3
3
1
2
3
4
1
1
2
3
4
5
Socket 1
Used for / wire colour
Diaphragm leakage detection (MBS)*
Dosing controller
Pin Assignment Cable 0.8 m
Cable 3 m
(without plug)
1+12 V Brown
2 MBS/GND White White
3 MBS supply Blue Yellow
4 Dosing controller output Blue
5 MBS output Green/yellow Green
Caution
The current output is not designed for controlling
secondary pumps in master/slave operation.
Socket 2 Cable Used for
Pin Assignment Wire colour +/- current output Remote on/off
1+5 V Brown +
2 Remote on/off input White x
3GND Blue x
4 Current output Black -
English (GB)
10
7.2.3 Stroke signal / pre-empty signal / error signal
Socket 3
Electrically isolated output for stroke signal or pre-empty signal
and error signal.
7.2.4 Remote on/off / contact input / current input
The current input is not designed for controlling a preceding
pump in master/slave operation. Instead, use the contact input
that controls socket 3 according to section 8.10 Creating a
master/slave application.
Socket 4
For the remote on/off input and contact input or current input.
If remote on/off and contact input are to be used at the same
time, wire 1 is assigned twice.
7.2.5 Empty signal only / pre-empty and empty signal
Socket 5
For the empty signal only or pre-empty and empty signal input.
The suction lines with empty signal or pre-empty and empty
signal are pre-assembled with a plug for socket 5.
Note
Use the stroke signal according to section
8.10 Creating a master/slave application to control
secondary pumps.
Socket 3 Cable Used for
Pin Assignment Wire colour
Stroke signal /
pre-empty signal
Error signal
1 Error signal contact Brown x
2 Stroke signal or pre-empty signal contact White x
3 Stroke signal or pre-empty signal contact Blue x
4 Error signal contact Black x
Caution
For the connection of one cable, use a plug adapter
with simple cable entry, for the connection of two
cables, use a plug adapter with double cable entry,
otherwise the protection will be lost!
Socket 4 Cable Used for
Pin Assignment Wire colour Remote on/off input Contact input +/- current input
1GND Brown x x -
2 Current input White +
3 Remote on/off Blue x
4 Contact input Black x
Socket 5 Used for
Pin Assignment Empty signal Pre-empty signal
1 Empty signal x
2GND x x
3 Pre-empty signal x
English (GB)
11
Flat plug
The flat plug is connected to socket 5.
Fig. 8 Flat plug
The cables and flat plugs are colour-coded as follows:
Cable assignment of plugs
Fig. 9 Cable assignment of plugs
7.3 Accessories: cable and plug for the AR control unit
TM03 6378 4506
Coding
No. Empty signal
Pre-empty signal /
empty signal
1 White Brown
2- White
3 Brown Green
Empty signal
Pre-empty signal /
empty signal
Pre-empty signal /
empty signal
NO NO / NO NC / NC
TM03 6377 4506
Green
White
Brown
Green
White
Brown
Brown
White
Description Product number
4-pole M12 plug, suitable for sockets 2 and 4, with 2 m signal cable 96609014 / 321-205
4-pole M12 plug, suitable for sockets 2 and 4, with 5 m signal cable 96609016 / 321-207
4-pole M12 plug, suitable for socket 3, with 2 m signal cable 96609017 / 321-206
4-pole M12 plug, suitable for socket 3, with 5 m signal cable 96609019 / 321-208
5-pole M12 plug, suitable for sockets 1, 2 and 4, screwed, without cable, with double cable entry 96609030 / 321-210
5-pole M12 plug, suitable for sockets 1, 2 and 4, screwed, without cable, with single cable entry 96609031 / 321-217
Extension cable, 5 m with 5-pole coupling for M12 plug 96609032 / 321-223
Opto-sensor with 0.8 m cable with plug 96609033 / 10.6270-420
Opto-sensor with 3 m cable without plug 96609034 / 10.6270-402
English (GB)
12
8. Using the pump electronics
8.1 Control and display elements
Fig. 10 Display of the AR control unit
8.2 Display test
A display test is performed when the pump is switched on. All the
segments of the display are switched on for 3 seconds and the
software version number is then displayed for 2 seconds.
8.3 Menu levels
Various menu levels are used in the electronics
• First function level: for selecting and setting the operating
modes of the pump (Manual, Contact, Analog) and starting the
pump.
• Second function level: for setting and viewing additional
functions and setting the access code to protect the pump
against unauthorised access to pump settings.
• Service level: for setting the inputs and outputs, thus
modifying the version of the AR control unit. It is possible to
revert to the default settings.
Saving user settings
The pump settings are automatically saved approximately every
10 minutes and remain as they are even after the power supply
has been switched off.
8.4 General functions of the electronics
8.4.1 Deaeration and suction
If the "Start/Stop" button is pressed for more than 1 second, the
pump switches to continuous operation for as long as the button
is held down (e.g. for suction or deaeration).
This happens regardless of the selected operating mode.
8.4.2 Locking "run"
The pump can be locked to avoid manual stopping.
When activating this function (service level), the pump starts
running with the present settings and cannot be stopped using
the "Start/Stop" button.
It is still possible to acknowledge error messages using the "Start/
Stop" button.
Stopping the pump when the locking "run" is activated
• If remote on/off is connected, use remote off.
• Disconnect the pump from the power supply.
8.4.3 Two-stage tank-empty signal
This function is used to provide a warning when the tank is almost
empty and to switch off the pump when the tank is empty. To use
the pre-empty signal, ensure that the suction line is equipped with
two float switches.
Pre-empty signal
The pre-empty signal can be an error signal or a pre-empty signal
at socket 3. For a pre-empty signal, relay 1 must be set to "Pre-
empty signal". See sections 7.2 Connection diagram for the AR
control unit and 8.8.1 Modifying the switch assignment.
When the contact of the corresponding float switch closes,
• The error signal relay or pre-empty signal relay switches on,
but the pump is not switched off.
• The LED flashes red.
• The empty-signal symbol flashes in the display.
Fig. 11 Display: pre-empty signal
Once the error has been corrected,
• The error signal relay or pre-empty relay switches off.
• The pump returns to the state it was in before the error
occurred.
Empty signal
When the contact of the corresponding float switch closes,
• The pump is switched off.
• The error signal relay switches on.
• The LED flashes red.
• The empty-signal symbol lights up in the display.
Fig. 12 Display: empty-signal symbol
Once the error has been corrected,
• The pump starts running again (if it was running before).
• The error signal relay switches off.
• The pump returns to the state it was in before the error
occurred.
Note
See the installation and operating instructions for the
pump. This section only describes the additional
functions.
TM03 6257 4506
Element Description
Light-emitting diode (LED)
• Lights up red when the pump is stopped.
• Lights up green when the pump is started
and briefly turns off during a suction
stroke.
• Lights up yellow when the pump is
switched off remotely.
• Flashes red if an error signal is present.
• Turns off when the pump is in menu
mode.
"Start/Stop"
• Use this button to start or stop the pump.
• Error signals can be acknowledged by
pressing the "Start/Stop" button.
Use the "Menu/Info" button to switch
between the operating modes.
Use the "Down" and "Up" buttons to change
values in the display.
Stop
Start
Menu
Down
Up
Mode
Mode
Stop
Start
Menu
Down
Up
TM03 6356 4506TM03 6357 4506
Manual
1/min
Stop
120
Manual
1/min
Stop
120
English (GB)
13
8.4.4 Diaphragm leakage detection (MBS)
As an option, the pump can be equipped with a sensor for
diaphragm leakage detection.
The electronics automatically detects whether a sensor is
connected. The following appears in the display.
Fig. 13 Display: MBS sensor is connected
When a diaphragm leakage is detected by the sensor,
• The pump is switched off.
• The error signal relay switches on.
• The LED flashes red.
• "MBS" and "ERROR" flash in the display.
Fig. 14 Display: diaphragm leakage detected
Once the error has been corrected (the contact is no longer
closed),
• Press the "Start/Stop" button to acknowledge the error.
• The pump starts running again (if it was running before).
• The error signal relay switches off.
• The pump returns to the state it was in before the error
occurred.
8.4.5 Hall sensor / motor monitoring
If the pump has existing strokes to process, the Hall sensor
checks whether the drive is turning. If the drive motor is blocked,
e.g. due to excess counter pressure in the dosing system, this is
detected and indicated by the integrated motor monitoring
function.
• The error signal relay switches on.
• "1/min", "bar" and "ERROR" flash in the display.
• The motor is not switched off.
Fig. 15 Display: motor monitoring
For possible errors and their correction, see the fault finding chart
in the installation and operating instructions for the pump.
• When the pressure has dropped to a certain level, the pump
will restart automatically.
Once the error has been corrected,
• Press the "Start/Stop" button to acknowledge the error.
8.4.6 Remote on/off
The pump can be switched off remotely (e.g. from a control
room).
• If switched off remotely, the pump does not respond to any
input signals or to operator input.
Exception: The pump can still be stopped and deaerated
manually.
– "Stop" lights up in the display.
– The yellow LED lights up.
If the pump was switched off remotely, the colour of the LED
may vary for the different pump modes.
• When it is switched on remotely, the pump returns to the state
it was in before it was switched off. If, for example, the pump
was previously in "Stop" mode, it returns to this mode once it
is switched on.
8.4.7 Dosing controller
As an option, a dosing controller can be connected to the pump.
The dosing controller monitors the dosing process and emits a
pulse for each dosing stroke.
• The dosing controller is enabled and disabled in the second
function level. See section 8.7 Second function level.
• During start-up or after 5 seconds of downtime, the electronics
automatically detects whether a dosing controller is
connected. The following appears in the display.
Fig. 16 Display: dosing controller is connected
Start-up operation
After starting the pump, 60 strokes are performed even if no
signal is received from the dosing controller.
If the dosing controller emits a pulse, "flow" is briefly turned off in
the display.
The start-up operation is triggered as follows:
• By pressing the "Start/Stop" button
• By switching the operating mode
• The lower stop point not being reached during current signal
control
• By actuating the remote on/off contact
• By switching on the power supply.
TM03 6358 4506TM03 6359 4506TM03 6360 4506
Caution
The motor monitoring function does not provide
protection for the motor as power is still supplied to
the motor. Therefore, the motor should be protected
by a motor protector.
Manual
1/min
120
MBS
Manual
1/min
Stop
120
ERROR
MBS
Analog
Run
0
ERROR
1/min
bar
TM03 6361 4506
Note
The start-up operation cannot be started in "contact
signal control" mode.
Manual
1/min
120
flow
English (GB)
14
Setting the dosing controller position
During the start-up operation, the dosing controller can be set
according to the operating conditions.
Fig. 17 Setting the dosing controller
1. Place the sensor at the top.
2. Set the desired stroke length.
3. Switch the pump to continuous operation.
4. Move the sensor down until "flow" starts flashing in the
display.
5. Move the sensor down another 2 mm. Otherwise very slight
deviations may be incorrectly interpreted as an error.
After start-up operation
If, after 40 continuous strokes, the dosing controller does not emit
a signal, this is recognised as an error:
• The error signal relay switches on, but the pump is not
switched off.
• The LED flashes red.
• "flow" and "ERROR" flash in the display.
Fig. 18 Display: flow error detected
Once the error has been corrected,
• press the "Start/Stop" button to acknowledge the error.
– The error signal relay switches off.
– The pump returns to the state it was in before the error
occurred.
8.5 Signal outputs
The electronics has the following signal outputs, e.g. in order to
return a signal to the control room.
8.5.1 Current signal output
The current stroke frequency of the pump is output as a current
signal.
• Current control 0-20 mA in mode "current output 0-20 mA"
• Current control 4-20 mA in mode "current output 4-20 mA" and
in manual mode.
8.5.2 Error signal
Used to return various error states to the control room.
8.5.3 Stroke signal / pre-empty signal
Depending on the relay setting, the contact output emits a signal
in these cases:
• for each complete stroke of the pump, or
• a pre-empty signal input.
To set the relay, see section 8.8.1 Modifying the switch
assignment.
TM03 6362 4506
Note
The dosing controller can only be used if the stroke
length remains constant during operation. Otherwise
it will emit an incorrect signal.
TM03 6363 4506
2 mm
flow
Sensor
Manual
1/min
Stop
120
ERROR
flow
Note
To use the control signal output, see section
8.7.5 Current input - weighting.
Caution
There is a risk that the connected evaluation unit
could be destroyed!
If the unit connected to the current output has a
GND-PE reference, the current output may increase
to a multiple of 20 mA!
If this is the case, connect an isolating amplifier
between the current output and the unit.
Note
The current output is linear between 4 (0) mA at
stroke frequency = 0 and 20 mA at maximum stroke
frequency of the pump. The current output cannot be
weighted.
English (GB)
15
8.6 First function level
8.6.1 Setting the operating modes
The operating modes are selected in the first function level, and
settings can be made for the modes.
This function level can be opened while the pump is running (LED
lights up green) or when the pump is stopped
(LED lights up red).
1. Press the "Menu/Info" button.
– The first function level is opened and the pump is stopped.
2. Navigate in the first function level by repeatedly pressing the
"Menu/Info" button.
3. Use the "Up" and "Down" buttons to modify the settings in the
relevant menu as shown in fig. 19.
4. Use the "Start/Stop" button to confirm the settings and to exit
the first function level.
– The pump is running (LED lights up green).
Fig. 19 First function level
* You can modify the assignment between the current input and the stroke frequency. See section 8.7 Second function level.
TM03 6364 4506
Manual
1/min
120
Run
Contact
0:1
1:n
Contact
1:0
n:1
Analog
0
0-20 mA
1/min
Analog
0
4-20 mA
1/min
Menu
Down
Up
Menu
Menu
Menu
Menu
Down
Up
Down
Up
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Stroke frequency proportional to current signal
> 19.8 mA: Continuous operation, max. stroke
frequency*
< 0.2 mA: Pump stops
0.2 - 19.8 mA: Stroke frequency proportional to
current signal
Current signal
control 0-20 mA
Contact signal
control, divisor n:1
Contact signal
control, multiplier 1:n
Current signal
control 4-20 mA
Set stroke frequency to 0-max.
[1/min]
Set number of strokes per pulse
1 signal = 0-999 strokes
Set number of pulses per stroke
0-999 signals = 1 stroke
Pump not running (LED lights red)
Pump running (LED lights up green)
Manual control
Stroke frequency proportional to current signal
> 19.8 mA: Continuous operation, max. stroke
frequency*
< 4.2 mA: Pump stops
4.2 - 19.8 mA: Stroke frequency proportional to
current signal
< 2 mA: Fault signal switches on > Display:
"ERROR", LED (2) flashes red
English (GB)
16
8.6.2 Manual control
Dosing with manual on/off and manually adjustable dosing
flow
In this operating mode, all the settings are entered on the pump
by the operator.
Use the "Start/Stop" button to start or stop the pump.
Use the "Up" and "Down" buttons to increase or decrease the
stroke frequency. This can be done when the pump is stopped or
when it is running.
Fig. 20 Display: stroke frequency
The maximum displayed stroke frequency is automatically set
according to the mains frequency and the gear ratio.
8.6.3 Contact signal control with multiplier 1:n
Use the "Start/Stop" button to start or stop the pump.
Use the "Up" and "Down" buttons to increase or decrease the
multiplier setting in the first function level.
Fig. 21 Display: 45 strokes per pulse
• When the pump receives a signal (e.g. from a water meter with
reed contact output), it performs the set number of dosing
strokes.
In the example n = 45, i.e. 45 strokes per contact.
n can be set between 0 and 999.
• If the pump receives more contact signals than the number
corresponding to the maximum stroke value, it runs in
continuous operation with maximum stroke frequency. The
maximum stroke frequency must not be exceeded.
8.6.4 Contact signal control with divisor n:1
Use the "Start/Stop" button to start or stop the pump.
Use the "Up" and "Down" buttons to increase or decrease the
divisor setting in the first function level.
Fig. 22 Display: 45 strokes per pulse
• When the pump receives the set number of pulses via the
contact input (e.g. from a water meter with reed contact
output), it performs a dosing stroke.
In the example n = 45, i.e. 45 contacts per pulse.
n can be set between 0 and 999.
• If the pump receives more pulses than the number
corresponding to the maximum stroke value, it runs in
continuous operation with maximum stroke frequency. The
maximum stroke frequency must not be exceeded.
Memory function / excess contact signals
Contact signals, which cannot be processed immediately, can be
stored and subsequently made available to the pump for
processing. A maximum of 65,000 contact signals can be stored.
• Without memory: If the pump is running when a contact
signal is received, the signal is ignored. The pump performs
the current dosing, then it is again ready to receive new
contact signals, i.e. it rejects excess contacts.
• With memory: If the pump is running when a contact signal is
received, the signal is stored in the memory. First, the pump
performs the current dosing, then it processes the contact
signals from the memory.
The contents of the memory are deleted:
• by switching off the power supply
• by switching the operating mode.
The contents of the memory are not deleted:
• by actuating the remote on/off contact
• by pressing the "Start/Stop" button
• by continuous operation.
TM03 6365 4506
Note
The pump must be started first in this operating
mode (LED lights up green, "Run" appears in the
display).
TM03 6366 4506
Manual
1/min
Run
120
Contact
1:n
0:45
Note
The pump must be started first in this operating
mode (LED lights up green, "Run" appears in the
display).
TM03 6367 4506
Note
The memory function can be enabled and disabled in
the second function level.
Contact
n:1
45:0
English (GB)
17
8.6.5 Current signal control 0-20 mA / 4-20 mA
For controlling the dosing pump via an external current
signal of 0-20 mA (4-20 mA)
Fig. 23 Input signal: 0-20 mA
Fig. 24 Input signal: 4-20 mA
• The stroke frequency is proportional to a current input signal
of 0-20 mA (4-20 mA).
• Above 19.8 mA, the pump runs in continuous operation at
maximum stroke frequency.
• Below 0.2 (4.2) mA, the pump switches off.
• Use the "Start/Stop" button to start or stop the pump.
4-20 mA current signal control
If the current input signal falls below 2 mA, the error relay is
switched, as an error has probably occurred at the signal source
or on the cable.
• The error signal relay switches on, the LED flashes red.
• "4-20 mA" and "ERROR" flash in the display.
Fig. 25 Display: current input signal < 2 mA
TM03 6368 4506TM03 6369 4506
Note
The pump must be started first in this operating
mode (LED lights up green, "Run" appears in the
display).
TM03 6370 4506
Analog
0-20mA
1/min
Run
0
Analog
1/min
Run
0
4-20mA
Analog
1/min
Run
0
ERROR
4-20mA
English (GB)
18
8.7 Second function level
8.7.1 Opening / exiting the second function level
Open the second function level to set the access code, to enable
or disable the memory functions, to display the operating hours,
or to modify the assignment between the current input and stroke
value.
This function level can only be opened when the pump is stopped
(LED lights up red).
8.7.2 Setting the access code
The access code is used to protect the pump against
unauthorised access to pump settings.
The default setting is 111. Code 111 gives access to all settings
described in sections 8.6 First function level and 8.7 Second
function level.
1. Press the "Start/Stop" button while the pump is running (LED
lights up green).
– The pump is stopped (LED lights up red).
2. Press and hold down the "Menu/Info" button for 3 seconds.
– The second function level is opened.
– "C:111" (default setting is "111") or a user-defined code
appears in the display.
3. Use the "Up" and "Down" buttons to set the code in the range
between 1 and 999.
Code 111 is required to open the second function level.
Fig. 26 Setting the access code
1. Navigate in the second function level by repeatedly pressing
the "Menu/Info" button.
2. Use the "Up" and "Down" buttons to modify the settings in the
relevant menu as shown in fig. 27.
3. Press the "Start/Stop" button to exit the second function level.
Note
The "Start/Stop" button for stopping the pump is
active with any code.
TM03 6371 4506
Menu
Menu
Down
Up
Stop
Start
Stop
Start
Stop
Start
Pump running (LED lights up green)
Pump not running (LED lights up red)
Keep pressed for 3 seconds
Second function level
• flow on/off
• memory on/off
• analog weighting
• display of total number of operating hours
Setting code 111
Note
You can only change the parameters in the shown
order. When the "Menu/Info" button is pressed again
(after one run), the first function level opens
automatically.
English (GB)
19
Figure for the second function level
Fig. 27 Second function level
8.7.3 Dosing controller
If installed, the dosing controller can be switched on and off.
8.7.4 Memory function
Used to store excess contact inputs for later processing.
8.7.5 Current input - weighting
In current input/output operation, the dosing capacity is controlled
via the current signal. The pump emits a current signal as a
feedback to the control room or master/slave applications.
TM03 6372 4506
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Stop
Start
Down
Up
Menu
Menu
Menu
Code
C:111
Code
flow
OFF
Memory
ON
Analog
20
mA
Analog
120
1/min
Menu
Menu
Menu
Menu
0001
h
ON / OFF
Down
Up
ON / OFF
Down
Up
5 - 20 mA
Down
Up
24 - max. [1/min]
Down
Up
0001 = 10 h - 9999 = 99 990 h
Keep pressed for 3 seconds
Weighting of
current input
Operating
hours counter
Switch dosing controller on/off
Saving of approx. 65,000
contacts signals
Select value for current input
Select value for stroke
frequency
Display of operating time of drive
Dosing controller (not
with all pump types)
Memory function
Weighting of
current input
English (GB)
20
Current signal control without weighting (default)
Current input and current output without weighting
Fig. 28 Current signal/stroke frequency
The assignment between the current signal and stroke frequency
is linear by default between 0 and the maximum stroke frequency
(depending on pump type) for a current input signal of 0 mA to 20
mA (curve 1) or 4 mA to 20 mA (curve 2).
The current output corresponds to the following:
• curve 1 for current signal control 0-20 mA
• curve 2 for current signal control 4-20 mA and manual mode.
Current signal control with weighting
You can modify the pump response by setting a specific
assignment between the current input and stroke frequency.
In the second function level, first set the current value and then
the stroke frequency in the menu items for current weighting for a
reference point.
In the example, a stroke frequency of 60 1/min has been set for a
current input of 6 mA, see curve 3. The curve now passes
through 0 mA and the selected point. The maximum stroke
frequency of the pump must not be exceeded!
TM03 6373 4506
0 mA 4 mA 8 mA 12 mA 16 mA 20 mA
f
max
f
min
21
[Strokes/min.]
[mA]
0
f
min.
4 8 12 16 20
f
max.
I
out
Note
The current output applies to the maximum stroke
frequency of the pump (curve I
out
), and is 10 mA in
the example.
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26

Grundfos AR Installation And Operating Instructions, Supplement

Grundfos
Brand
Grundfos
Model
AR
Type
Installation And Operating Instructions, Supplement
Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents