Grundfos Conex DIS-2Q Installation And Operating Instructions Manual

Brand: Grundfos

Model: Conex DIS-2Q

Type: Installation And Operating Instructions Manual

Conex

DIS-2Q

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions.

CONTENTS

Page

1. Symbols used in this document

2. Parameter settings

3. General information

4. Applications

5. Safety instructions

5.1 Obligations of the owner

5.2 Avoiding danger

6. Identification

6.1 Nameplate

7. Technical data

7.1 Enclosure class

7.2 General data

7.3 Electronic data and functions

7.4 RS-485 interface

7.5 Dimensions

8. Installation

8.1 Transport and storage

8.2 Unpacking

8.3 Installation requirements

8.4 Installation in control panel

8.5 Installation in wall housing

9. Electrical connection

9.1 Terminals

9.2 Power supply connection

9.3 Current inputs and outputs

9.4 Feedback potentiometer of the final

control element

9.5 Relay outputs

10. Operation

10.1 Function

10.2 Controls and displays

10.3 Operating the controller

11. Fault finding

12. Maintenance

12.1 Replacing mains fuses (wall housing)

13. Spare parts

14. Disposal

15. Appendix

15.1 Measuring and control technology

15.2 Application examples of different output

signals and final control elements

15.3 RS-485 serial interface

Warning

Prior to installation, read these

installation and operating instructions.

Installation and operation must comply

with local regulations and accepted

codes of good practice.

Warning

These complete 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.

English (GB)

2. Parameter settings

Controller settings

LED 1st level 2nd level 3rd level

Measured value Code functions

--- %

Code

Code number Hysteresis Device number for RS-485

--- %

SP 1

Switching point SP 1 Pulse frequency for SP 1 Transmits alarm via RS-485

x 100

pulses/

hour

01 (yes)

00 (no)

SP 2

Switching point SP 2 Pulse frequency for SP 2

x 100

pulses/

hour

Proportional band Xp Interpulse period

%sec

TN (s)

Reset time Tn Actuating time

sec sec

TV (s)

Derivative action time Tv Disturbance variable Range of current input 2

sec --- %

% at 0 (4) mA

% at 20 mA

TM03 7053 2108

Position of feedback

potentiometer

--- %

TM03 7054 2108

Maximum dosing time Minimum pulse length

sec sec

English (GB)

3. General information

This manual contains all important information about

the Conex DIS-2Q:

• technical data

• instructions for startup, use and maintenance

• safety information.

If you need further information, or if problems occur

which are not described in details in this manual,

please contact Grundfos.

4. Applications

The Conex DIS-2Q is a multipurpose device

designed to carry out high-precision controls of

disinfection parameters, pH-value and redox

potential.

Conex DIS-2Q microprocessor-based controllers

controls any measured variables using appropriate

final control elements.

5. Safety instructions

5.1 Obligations of the owner

The owner of the plant is responsible for:

• compliance with country-specific safety

regulations

• training of operating personnel

• provision of prescribed protective equipment

• implementation of regular maintenance.

5.2 Avoiding danger

6. Identification

6.1 Nameplate

Fig. 1 Nameplate, Conex DIS-2Q

7. Technical data

7.1 Enclosure class

Warning

Other applications than those

described in section 4. Applications

are considered as non-approved and

are not permissible.

Grundfos cannot be held liable for any

damage resulting from incorrect use.

Warning

Installation and connection of the

device and the associated

supplementary components must only

be carried out by authorised personnel!

The local safety regulations must be

observed!

Warning

Switch off the power supply before

connecting the power supply cable and

relay contacts!

Do not open the device!

Maintenance and repair must only be

carried out by authorised personnel!

Caution

Select the mounting location so that

the housing is not subject to

mechanical loading.

Check that all settings are correct

before starting the device!

TM04 1218 1213

Pos. Description

1 Model

2 Serial number

3 Voltage [V]

4 Frequency [Hz]

5 Product name

6 Product number

7 Country of origin

8 Year and week of production

9CE mark

10 Power consumption [VA]

11 Enclosure class

Control panel enclosure IP54 (front)

Control panel enclosure

with optional front door

IP55

Wall-mounted enclosure

(optional wall housing)

IP65

342-5000-10000

S/N: 08/61557

230/240V 50/60Hz 8 VA, IP 65

Conex DIS-2Q

96732494P1108270861557

789

English (GB)

7.2 General data

7.3 Electronic data and functions

7.3.1 Inputs and outputs

7.3.2 Controller functions

7.3.3 Display ranges

7.3.4 Adjustment ranges

Input power Approximately 8 VA

Permissible

ambient

temperature

0 to 50 °C

Permissible

storage

temperature

-20 to +65 °C

Maximum relative

humidity

90 % (non-condensing)

Weight 0.8 kg

Enclosure Noryl, chemically resistant

Connections

Screw-plug terminals for

cables up to 2.5 mm

Versions of power

supply

• 230/240 V (50/60 Hz)

(standard model)

• 115/120 V (50/60 Hz)

Current output 1

Continuous control output for

SP 1:

• 0 (4) to 20 mA

• electrically isolated

• max. load 400 Ω.

Current output 2

Position of feedback

potentiometer or continuous

control output for SP 2

• 0 (4) to 20 mA

• electrically isolated

• max. load 400 Ω.

Current input 1

Measured value (actual

value):

• 0 (4) to 20 mA

• electrically isolated

• load 50 Ω.

Current input 2

Disturbance variable/

command variable:

• 0 (4) to 20 mA

• electrically isolated

• load 50 Ω.

Contact rating

6 A / 250 V, max. 550 VA

resistive load (with contact

protection circuit) of relay

outputs.

Note

The current inputs are electrically

isolated from the current outputs, but

are applied together to the same

potential.

Control functions

• Limit contact

• continuous controller

• two-position controller

• three-position controller

proportional controller

• ratio controller

• controller with disturbance

variable feedforward.

Control action

• Proportional action

• integral action

• differential action.

Measured value (actual value) 0-100 %

Disturbance variable 0-1,999 %

Position of final control element 0-100 %

Switching points 0-100 %

Control direction

Can be set to upward or

downward.

Proportional band X

0-500 %

Reset time T

0-1,999 s

Derivative action time

0-500 s

Setting for current

output 2

Ratio: -1,999 to +1,999 %

Disturbance variable:

0-1,999 %

Hysteresis 0-50 %

Interpulse period 1-99 s

Minimum pulse width 0 - 9.9 s

Pulse frequency

(selectable

separately for each

switching point)

0.1 - 72 (correlates with

10-7,200 pulses/hour)

Actuating time 1-240 s

Time delay for alarm

signal

0-1,999 s (maximum

dosing time)

English (GB)

7.4 RS-485 interface

7.5 Dimensions

Fig. 2 Control panel enclosure Conex DIS-2Q

Fig. 3 Conex DIS-2Q in wall mounting housing

8. Installation

8.1 Transport and storage

• Transport the device carefully.

• Do not drop the device!

• Store at a dry and cool location.

8.2 Unpacking

1. Check the device for damage.

2. Install the device as soon as possible after

unpacking.

3. Do not install or connect damaged devices!

8.3 Installation requirements

• Dry room

• room temperature: 0-50 °C

• vibration-free location.

8.4 Installation in control panel

Fig. 4 Control panel enclosure Conex DIS-2Q

1. Make an opening 92 + 0.8 mm x 92 + 0.8 mm in

the control panel.

2. Slip on the supplied gasket.

3. Insert the Conex DIS-2Q into the opening from

the front.

1. Hook the clamps into the tightening cones on the

sides at the top and bottom.

2. Secure the device from the rear using a

screwdriver.

Data transfer rate 9,600 baud

Data format

•8 bits

• 1 start bit

• 1 stop bit

• no parity.

Maximum cable

length

2-wire cable up to 1,200 m

Note

Further data: See 15.3 RS-485 serial

interface.

TM03 7056 1213

TM03 7055 1213

138

198

212,5

163

Note

Retain packing material or dispose of it

according to local regulations.

Caution

If you do not observe the installation

requirements, the device may be

damaged! The measurements may not

be correct!

TM03 7057 1213

Caution

Do not damage the gasket!

The gasket must be fitted exactly!

+0.8

> 10.5

> 30.5

English (GB)

8.5 Installation in wall housing

The plastic housing is designed for the

Conex DIS-2Q controller and is very easy to install

and service.

– 300-115 (91835231) for one Conex DIS-2Q

controller

– 300-114 (95709720) for one Conex DIS-2Q

controller with RS-485 interface.

Technical data

1. Loosen the four fastening screws of the front

panel.

2. Remove the front panel.

3. Insert the device from the front.

4. Hook the clamps into the tightening cones on the

sides at the top and bottom.

5. Secure the device from the rear using a

screwdriver.

6. When the front panel is mounted, plug the device

onto the base plate.

7. Screw the front panel into the wall housing.

9. Electrical connection

1. Connect the cables used to the terminals

according to the Conex DIS-2Q terminal

assignment.

Material ABS

Enclosure class IP65

Complete with four cable glands

Warning

Switch off the power supply before

installing!

Caution

Enclosure class IP65 is only

guaranteed if the transparent cover is

closed and the appropriate cable

glands or dummy caps are fitted.

Warning

Disconnect the mains voltage before

connecting the power supply cable and

the relay contacts!

Observe the local safety regulations!

Protect the cable connections and

plugs against corrosion and humidity.

Caution

Before connecting the power supply

cable:

Check that the mains voltage specified

on the type plate correlates with the

local conditions!

An incorrect mains voltage may

destroy the device!

Caution

To ensure electromagnetic

compatibility (EMC):

Input and current output cables must

be shielded.

Connect the shielding to the shield

ground on one side.

Refer to the connection diagram! Input,

current output and mains cables must

be in separate cable channels.

Note

Unused terminals remain open.

English (GB)

9.1 Terminals

Fig. 5 Terminals Conex DIS-2Q

TM03 7058 1213

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

27 28 29 30 31 32

SP 1 SP 2 Alarm L1 N PE

H2O

mA 1

mA 2

A A

RS 485

mA 1

mA 2

A A

100 %

0 %

Pos. Description

External inputs

mA 1 Current input 1 (measured variable)

mA 2 Current input 2 (disturbance variable or command variable)

Outputs

mA 1 Current output 1 (control signal for SP 1)

mA 2 Current output 2 (position of feedback potentiometer or control signal for SP 2)

0 % / 100 % Feedback potentiometer

H2O Water sensor or potential free output for stopping control

Potential free relay outputs

SP 1 Set point 1

SP 2 Set point 2

Alarm Alarm

Power supply

PE Protective earth conductor

L1 Phase

N Neutral conductor

English (GB)

9.1.1 Cable types and length

9.2 Power supply connection

1. Connect the plugs to the rear of the device.

2. Ensure correct orientation.

3. Connect the protective earth conductor (PE) to

terminal 26.

4. Connect the neutral conductor (N) to terminal 25.

5. Connect phase (L1) to terminal 24.

6. Switch the device on and off by switching the

power supply on and off accordingly.

The device itself does not feature a separate on/off

switch.

9.3 Current inputs and outputs

9.3.1 Current input 1 (measured value)

The signal from a measuring amplifier or transmitter

which determines the actual value of the measured

variable is connected to current input 1.

1. Connect the + conductor to terminal 2.

2. Connect the - conductor to terminal 1.

3. Connect the screen to earth (PE) at one end.

9.3.2 Current input 2 (disturbance variable or

command variable)

The signal from a measuring amplifier or transmitter

which specifies the disturbance variable or command

variable is connected to this current input.

1. Connect the + conductor to terminal 4.

2. Connect the - conductor to terminal 5.

3. Connect the screen to earth (PE) at one end.

9.3.3 Current output 1 (measured value)

Current 1 output outputs the displayed measured

value as an analog current (0 (4) to 20 mA).

Use of current signal:

• As input signal for another indicator.

1. Connect the + conductor to terminal 6.

2. Connect the - conductor to terminal 7.

3. Connect the screen to earth (PE) at one end.

9.3.4 Current output 2 (position of feedback

potentiometer)

Current output 2 outputs the position of the feedback

potentiometer of the final control element as an

analog current (0 (4) to 20 mA).

Use of current signal:

• As input signal for another indicator

1. Connect the + conductor to terminal 13.

2. Connect the - conductor to terminal 14.

3. Connect the screen to earth (PE) at one end.

9.4 Feedback potentiometer of the final

control element

1. Connect terminal 9 to the "Start" connection

(0 %).

2. Connect terminal 10 to the "End" connection

(100 %).

3. Connect terminal 8 to the "Wiper" connection.

4. Connect the screen to earth (PE) at one end.

Cable Conductors

Max. length

[m]

Screen

A 2 1,000 Single

B 3 1,000 Single

C 2 1,200 Single

Caution

Make sure that the polarity of the

current input is correct!

Maximum load: 50

Caution

Make sure that the polarity of the

current input is correct!

Maximum load: 50

Caution

Make sure that the polarity of the

current output is correct!

Maximum load: 400

Caution

Make sure that the polarity of the

current output is correct!

Maximum load: 400

Caution

Minimum resistance of feedback

potentiometer: 500

English (GB)

9.5 Relay outputs

With inductive loads (also relays and contactors),

interference suppression is necessary. If this is not

possible, protect the relay contacts using a

suppressor circuit as described below.

• With AC voltage:

• With DC voltage: Connect the free-wheeling

diode in parallel to the relay or contactor.

Fig. 6 Suppressor circuit, DC/AC

9.5.1 SP 1 (as N/O contact)

1. Connect terminal 16 to the power supply terminal

for L1 of the first final control element.

2. Connect terminal 17 to the power supply

cable L1.

9.5.2 SP 2 (as N/O contact)

1. Connect terminal 19 to the power supply terminal

for L1 of the first final control element.

2. Connect terminal 20 to the power supply

cable L1.

9.5.3 Alarm relay

1. Connect terminal 21 to the power supply terminal

for L1 of the alarm unit.

2. Connect terminal 22 to the power supply

cable L1.

Note

The connection of the relay outputs

depends on the application and the

final control elements used.

Therefore consider the connections

described below as guidelines.

See 15.2 Application examples of

different output signals and final

control elements and the

documentation of the final control

element.

Current up to Capacitor C Resistor R

60 mA 10 nF, 275 V 390 Ω, 2 W

70 mA 47 nF, 275 V 22 Ω, 2 W

150 mA 100 nF, 275 V 47 Ω, 2 W

1.0 A 220 nF, 275 V 47 Ω, 2 W

Caution

Provide the relay outputs with a

corresponding backup fuse!

TM03 7209 4513

ACDC

English (GB)

10. Operation

10.1 Function

Conex DIS-2Q is a configurable, microprocessor-

based controller for exact control of any measured

variables. It can therefore be used for many tasks

associated with measuring and control technology.

10.1.1 Application example

The controller is used e.g. in conjunction with other

Grundfos products to control the dosing of chlorine

and to correct the pH value.

Fig. 7 Application example

he complete measuring and control system comprises:

Note

This is only one of a multitude of

possible applications.

See 15.2 Application examples of

different output signals and final

control elements

TM03 7061 1213

IDM

86 87

Conex DIA-1

Man

Cal

OKEsc

Alarm

Conex DIA-1

Man

Cal

OKEsc

Alarm

Conex DIS-2Q

Pos. Description

1 Measuring cell AQC for chlorine and pH

2 Water sensor

3 Water sampler

4 Dirt trap

5 Electromagnetic flowmeter

6 Conex DIA measuring amplifier and controller for pH

7 Conex DIA measuring amplifier and controller for chlorine

8 Conex DIS-2Q controller

9 Gas dosing unit with servomotor

10 Dosing pump with servomotor

English (GB)

10.1.2 Chlorine control principle

• The water is sampled and passed through the

measuring cell.

• An electric current is generated in the measuring

cell:

– In the µA range.

– Proportional to the concentration of chlorine.

– The measuring cell is controlled resistant to

interference by a local potentiostat.

• The Conex DIA measuring amplifier for chlorine:

– Amplifies the current.

– Calculates the concentration using the

calibration parameters.

– Indicates the concentration as a digital value.

– Outputs this value as a signal of 0 (4) to 20 mA

via current output 1.

• The electromagnetic flowmeter:

– Measures the water flow.

– Outputs this value as a signal of 0 (4) to 20 mA,

• The Conex DIS-2Q controller:

– Calculates the manipulated variable signal

from the measured concentration of chlorine

and the signal from the electromagnetic

flowmeter.

– Controls the servomotor of the gas dosing unit.

10.1.3 pH control principle

• The water is sampled and passed through the

measuring cell.

• The pH combination electrode generates a

potential.

• The Conex DIA measuring amplifier for pH:

– Amplifies the potential.

– Calculates the potential using the calibration

parameters.

– Indicates the pH as a digital value.

– Outputs this value as a signal of 0 (4) to 20 mA

via current output 1.

• The Conex DIS-2Q controller:

– Calculates the manipulated variable signal

from the measured pH value.

– Controls the servomotor of the dosing pump.

English (GB)

10.2 Controls and displays

Fig. 8 Front of Conex DIS-2Q

Fig. 9 Control deviation (% of X

)

TM03 7062 1213

Pos. Description

Control elements

• LEDs to display the control deviation:

The combination of illuminating and

flashing LEDs indicates the magnitude of

the deviation (See Fig. 9 Control

deviation (% of Xp))

• Option: Deviation of switching point 1

or 2.

• LED strip indicator:

• Indication of selected function.

10 • Alarm LED.

11 • Display.

Operator keys

"Up" key

• Manual activation of relay 1.

• LED indicating status of relay 1.

"Down" key

• Manual activation of relay 2.

• LED indicating status of relay 2.

If the keys "Up" and "Down are" pressed

simultaneously, the alarm relay is activated.

123

"Man" key

• Switch between automatic and manual

mode.

• LED indicating automatic or manual

mode.

– Illuminates in automatic mode.

"-" key

• Reduce value to be set.

"Save" key

• Save value to be set.

"Function" key

• Switch to next function.

"+" key

• Increase value to be set.

TM03 7063 1213

Pos. Description

+100 %

+75 %

+50 %

+25 %

0 %

-100 %

-75 %

-50 %

-25 %

0 %

English (GB)

10.3 Operating the controller

Note

This combination means: Keep the first key pressed and then briefly press the

second key.

TM03 7064 1213

n+1

CODE

SP 1

SP 2

TN (s)

TV (s)

n+1 n+1

n+1

LED

1st level

2nd level

3rd level

Display measured

value (actual value)

in %.

Display and set code

functions.

Enter code number.

Display and set

hysteresis.

Display and set

device number for

RS-485.

Display and set

switching point 1.

Display and set pulse

frequency for

switching point 1.

Transmit alarms via

RS-485.

Display and set

switching point 2.

Display and set pulse

frequency for

switching point 2.

Display and set X

Display and set

interpulse period.

Display and set T

Display and set

actuating time.

Display and set T

Display manipulated

variable.

Set ratio for ratio

controller or

disturbance variable.

Display and adjust

position of feedback

potentiometer.

Display and set

maximum dosing

time.

Display and set

minimum pulse length.

English (GB)

10.3.1 Basic settings for the controller functions

The following applies to all types of controller:

• Use as ratio controller:

– Switch on code function 22 in addition.

• Use as controller with disturbance value

feedforward:

– Switch on code function 14 in addition.

Note

All parameters are factory-set to zero. A setting is always required prior to startup.

See 10.3.6 Summary of code functions and 15.2 Application examples of different output

signals and final control elements

Parameter

Limit

contact

controller

Two-

position

interpulse

Two-position

pulse

frequency

Three-

position

step

Continuous

Three-

position

proportional

SP 1

Required

setpoint

Pulse frequency

for SP 1

00a.r.

**)

00 -

SP 2 -

-- -- -

Pulse frequency

for SP 2

--- ---

0 a.r. a.r. a.r. a.r. a.r.

0 a.r. a.r. a.r. a.r. 0

Hysteresis a.r. a.r. a.r. a.r. a.r. a.r.

Interpulse period - a.r. - - - a.r.

Actuating time 0 0 0 a.r. 0 0

Minimum pulse

width

0 a.r. a.r. a.r. 1 sec a.r.

Required code

functions

6, 8, 10 None None

***)

(without

feedback of

positioning

angle)

None

3, 4, 8, 9, 10,

11, 17 (with

feedback of

positioning

angle)

"-": without function (no setting required).

**)

"a.r.": setting as required.

***)

Switch off with disturbance variable feedforward or ratio control as they require feedback of positioning

angle.

English (GB)

10.3.2 Setting and displaying codes

The code function is used to protect the device

against unintentional or unauthorised adjustment.

• If settings on the device are to be changed:

Fig. 10 Code setting

• If the device is to be protected against

unauthorised adjustment:

Fig. 11 Code setting

10.3.3 Reading measured value (actual value)

Fig. 12 Actual value

10.3.4 Switching the code functions on and off

Fig. 13 Switching code functions

TM03 7066 1213TM03 7067 1213TM03 7069 1213

XXX

086

Currently set

code

Settings can now be

modified.

XXX

086

Currently set

code.

Set a number

not equal to 086.

Device is protected.

XX.X

Measured value is

displayed.

TM03 7068 1213

Note

The triangle in the display indicates the

second level.

XX.X

+ +

+++

n+1

Lowest

function that is

switched on.

Code number

+: Switch on

function.

-: Switch off

function.

+: Switch on

function.

-: Switch off

function.

+: Switch on

function.

-: Switch off

function.

English (GB)

10.3.5 Scanning the active code functions

Fig. 14 Scanning code numbers

10.3.6 Summary of code functions

TM03 7070 1213

No.

Control direction of switching point 1

OFF

Downward control

SP 1 is the upper limit and the relay is

activated when the actual value

exceeds the setpoint.

Upward control

SP1 is the lower limit and the relay is

activated when the actual value falls

below the setpoint.

Control direction of switching point 2

OFF

Upward control

SP 2 is the lower limit and the relay is

activated when the actual value falls

below the setpoint.

Downward control

SP 2 is the upper limit and the relay is

activated when the actual value

exceeds the setpoint.

Dosing time monitoring of switching point 1.

OFF

Alarm when maximum dosing time is

overrun.

No alarm when maximum dosing time

is overrun.

Dosing time monitoring of switching point 2.

OFF

Alarm when maximum dosing time is

overrun.

No alarm when maximum dosing time

is overrun.

......

XX.X

n+1

Only functions that

are on are

displayed.

Alarm relay

OFF

Alarm relay is energised permanently

on alarm.

Alarm relay is energised for

approximately 1 second (momentary

pulse), e.g. to trigger an alarm

recorder.

Proportional action control for switching

point 1

OFF

Switching point 1 with proportional

action control.

Switching point 1 without proportional

action control.

Proportional action control for switching

point 2

OFF

Switching point 2 with proportional

action control.

Switching point 2 without proportional

action control.

Integral action control for switching point 1

OFF

Switching point 1 with integral action

control.

Switching point 1 without integral

action control.

Integral action control for switching point 2

OFF

Switching point 2 with integral action

control.

Switching point 2 without integral

action control.

Differential action control for switching point 1

OFF

Switching point 1 with differential

action control.

Switching point 1 without differential

action control.

Differential action control for switching point 2

OFF

Switching point 2 with differential

action control.

Switching point 2 without differential

action control.

Signal of current input 1 (actual value)

OFF Signal 0 to 20 mA.

ON Signal 4 to 20 mA.

Signal of current output 2 (disturbance

variable or command variable)

OFF Signal 0 to 20 mA.

ON Signal 4 to 20 mA.

No.

English (GB)

Disturbance variable feedforward

OFF

Without disturbance variable

feedforward.

ON With disturbance variable feedforward.

Enabling of third operator level

OFF Third operator level disabled.

Third operator level enabled (a colon

flashes in display)

Inversion of disturbance variable

OFF Disturbance variable not inverted.

ON Disturbance variable inverted.

Controller configuration

OFF

Device operates as two two-position

controllers for SP 1 and SP 2 (if code

function 18 is also OFF).

Device operates as three-position

controller with feedback of positioning

angle.

Controller configuration

OFF

Device operates as two two-position

controllers for SP 1 and SP 2 (if code

function 17 is also OFF).

Device operates as three-position

controller without feedback of

positioning angle.

Signal of current output 1 (control output for

SP 1)

OFF Signal 0 to 20 mA.

ON Signal 4 to 20 mA.

Signal of current output 2 (position of

feedback potentiometer or control output for

SP 2)

OFF Signal 0 to 20 mA.

ON Signal 4 to 20 mA.

Function of current output 2

OFF Position of feedback potentiometer.

ON Control output for switching point 2.

No.

Controller configuration

OFF Device operates as setpoint controller.

Device operates as ratio controller.

Setpoint is entered via current input 2.

Assignment of LEDs for display of control

deviation

OFF

LEDs indicate deviation of actual value

from SP 1.

LEDs indicate deviation of actual value

from SP 2.

Assignment of current input 2

OFF

0 (4) mA correspond to 0 %.

20 mA correspond to 100 %.

When used as a ratio controller or

controller with disturbance variable

feedforward:

Current input is assigned to a specific

range (third operator level).

No.

English (GB)

10.3.7 Settings for switching point SP 1

• Display and set switching point SP 1.

Fig. 15 Setting switching point 1

Setting control direction for switching point 1

• Select code function 1:

– OFF: The relay is activated when the actual

value exceeds the setpoint.

– ON: The relay is activated when the actual

value falls below the setpoint.

Setting dosing time monitoring for switching

point 1

• Select code function 3:

– OFF: Alarm when maximum dosing time is

overrun.

– ON: No alarm when maximum dosing time is

overrun.

Selecting proportional action control for

switching point 1

• Select code function 6:

– OFF: Switching point 1 with integral action

control.

– ON: Switching point 1 without integral action

control.

Selecting integral action control for switching

point 1

• Select code function 8:

– OFF: Switching point 1 with integral action

control.

– ON: Switching point 1 without integral action

control.

Selecting differential action control for switching

point 1

• Select code function 10:

– OFF: Switching point 1 with differential action

control.

– ON: Switching point 1 without differential action

control.

Displaying and setting pulse frequency for

switching point 1

Range of adjustment: 0.1 (correlates with 10 pulses/

hour) to 72 (correlates with 7,200 pulses/hour).

Fig. 16 Setting setpoint for switching point 1

10.3.8 Settings for switching point 2

• Display and set switching point 2.

Fig. 17 Setting switching point 2

Setting control direction for switching point 2

• Select code function 2:

– OFF: The relay is activated when the actual

value falls below the setpoint.

– ON: The relay is activated when the actual

value exceeds the setpoint.

Setting dosing time monitoring for switching

point 2

• Select code function 4:

– OFF: Alarm when maximum dosing time is

runover.

– ON: No alarm when maximum dosing time is

runover.

TM03 7071 1213

31.0 %

XX.X %

Current setpoint

Set setpoint.

Setpoint is saved.

Note

If 0 is set as the pulse frequency, the

device operates as an interpulse

controller.

TM03 7072 1213TM03 7073 1213

n+1

31.0

Set setpoint.

Setpoint is saved.

Current setpoint

18.0

XX.X

Current

setpoint

Set setpoint.

Setpoint is saved.

English (GB)

Selecting proportional action control for

switching point 2

• Select code function 7:

– OFF: Switching point 2 with proportional action

control.

– ON: Switching point 2 without proportional

action control.

Selecting integral action control for switching

point 2

• Select code function 9:

– OFF: Switching point 2 with integral action

control.

– ON: Switching point 2 without integral action

control.

Selecting differential action control for switching

point 2

• Select code function 11:

– OFF: Switching point 2 with differential action

control.

– ON: Switching point 2 without differential action

control.

Displaying and setting pulse frequency for

switching point 2

Range of adjustment: 0.1 (correlates with 10 pulses/

hour) to 72 (correlates with 7,200 pulses/hour).

Fig. 18 Setting setpoint for switching point 2

10.3.9 Displaying and setting hysteresis

Range of adjustment: 0 to 50 %.

Distribution of hysteresis:

Fig. 19 Hysteresis

Note

If 0 is the pulse frequency, the device

operates as an interpulse controller.

TM03 7074 1213

n+1

31.0

Current

setpoint

Set setpoint.

Setpoint is saved.

Note

The hysteresis is set for both switching points together.

TM03 7075 2208

Hysteresis

SP 1

SP 2

Hysteresis

1/2 hysteresis

Page is loading ...

Grundfos Conex DIS-2Q Installation And Operating Instructions Manual

Grundfos Conex DIS-2Q Installation And Operating Instructions Manual

Grundfos Conex DIS-2Q Installation And Operating Instructions Manual

Related papers

Other documents