Electronic Control Box
item M7000CB - item M7000CB/EVO
Part. Y1791C - 10/08-01 PC
3
1. General features Page 4
1.1 Versions Page 4
1.2 Description Page 4
1.3 Applications
Page 4
1.4 Installation
Page 4
1.5 Supply
Page 4
2. Description of the front panel Page 5
2.1 Selection keys Page 5
2.2 Measurement selection Page 5
2.3 LEDs Page 6
3. Operating mode Page 7
3.1 Reset mode (red LED of RESET key) Page 7
3.2 Manual mode (red LED of MAN key) Page 7
3.3 Automatic mode (red LED of AUT key) Page 7
3.4 Off-load test mode (without load) Page 8
3.5 On-load test mode (under load) Page 8
4. Applications Page 8
4.1 Utility-to-generator Application Page 8
4.2 Utility-to-utility Application Page 8
5. Circuit breakers Control Page 9
5.1 With feedback (default setup) Page 9
5.2 Without feedback Page 9
6. Voltage controls Page 10
7. Programming Page 11
7.1 Setting the parameters Page 11
7.2 Table of menus Page 12
7.3 P0 menu - Nominal data Page 12
7.4 P1 menu - General data Page 13
7.5 P2 menu - Main line voltage control Page 14
7.6 P3 menu - Secondary line voltage control Page 15
7.7 P4 menu - Programmable inputs Page 15
7.8 P5 menu - Programmable outputs Page 16
7.9 P6 menu - Serial communication Page 16
8. Diagnostic messages Page 17
9. Alarms Page 17
10. Connections Page 19
11. Technical features Page 20
CONTENTS
Electronic Control Box
4
1.1 Versions
• M7000CB - Standard version
• M7000CB/EVO - Evoluted version + interface RS-485
1.2 Description
• Electronic Control Box - microprocessor
• Two inputs of three-phase voltage measurement
• Power supply DC 12-24-48 VDC
• Power supply AC 220-240 VAC
• 2 LED displays, 3 digits 7 segments
• 20 status and measurement LED indicators
• 8-key membrane keypad
• RS-232 serial interface for set-up, remote control and supervision
• RS-485 opto-isolated interface (M7000CB/EVO)
• 2 programmable digital inputs
• 3 programmable relay outputs (1NO + 2 C/O)
1.3 Applications
• Changeover between utility-to-utility, utility-to-generator
• Control of motorized circuit breakers, motorized switches
• Start/stop generator
• Three-phase, two-phase or single-phase voltage controls
• L-L voltage (or L-N voltage in case of monophase lines)
• Controls on minimum voltage, maximum voltage, phase loss, asymmetry, minimum
frequency, maximum frequency, with independent enabling and delay
• Voltage thresholds with programmable hysteresis
1.4 Installation
• Install the electronic control box according to the wiring diagrams shown in the last pages
of the manual
• Use the right wiring diagram for the application
• Set the parameters according to the required wiring diagram, paying special attention
when programming the inputs / outputs
1. General features
1.5 Supply
• M7000CB and M7000CB/EVO have a double power supply circuit, that means that they
can operate with both AC and DC supply or with only one of the two indifferently
• In presence of both power supplies, the energy is taken from the AC source
5
2.1 Selection keys
• The front panel of the electronic control box has two LED displays showing the voltages
of the two power sources with their correspondent keys – (A) for Main line and (B) for
Secondary line – which allows to select the measurements.
• The following keys: SET (E) - AUT (F) - MAN (G) - RESET (H) allow to select the operating
mode, which is indicated by the corresponding LED.
• A mimic diagram is located at the center of the front panel; it shows the status of the
circuit breakers for load connection.
• Two keys – (C) and (D) – can open and close the circuit breakers (buttons are active only
after pressing the MAN key).
A B
E
F
G
H
C D
2.2 Measurement selection
• When the key located under each display (A) and (B) is pressed several times, it will be
possible to view the various measurements of the line sequentially.
• Line-to-line voltages, line-to-neutral voltages (in case of single-phase lines) are available
for each line.
• The combinations of the red LEDs indicate which measurement is selected. The list of
measurements may change depending on whether the electronic control box is set up for
the three-phase, two-phase or single-phase control.
• After 1 minute without touching the key, the measurement returns to the default mea-
surement, which may be the first voltage line-to-line or the first voltage line-to-neutral,
depending on how the voltage control is set up.
• In case of alarms or messages, the display will be occupied by the alarm code.
By pressing the selection key, it is possible to temporarily hide the alarm and access the
measurements.
2. Description of the
front panel
Example of a list of measurements
on an electronic control box set
up for a three-phase control.
Electronic Control Box
6
2.3 LEDs
• The front panel has some LEDs which indicate the status of the circuit breakers controlled
by the electronic control box.
LED On Off Flashing
ALARM
No alarm enabled
One or more alarms
enabled (RED)
POWER SUPPLY
Device powered
(GREEN)
No power
OPEN/CLOSE
CONTROL
Close control (RED)
Open control (GREEN)
No control
OPEN/CLOSED
✱
Circuit breaker closed
(RED)
Circuit breaker open
(GREEN)
Auxiliary contacts
not connected
DISCONNECTED
✱✱
Circuit breaker not
inserted in its base
Circuit breaker inserted
or not-inserted-control
disabled
TRIPPED
✱✱
Circuit breaker tripped
Circuit breaker not
tripped or AL contact
not connected
PRESENCE
L1/L2/L3
Voltage present No voltage
1HZ = Time of
presence/absence
in progress
5HZ = Display
measurements
selection
✱ If the auxiliary contacts have been connected, the LED will represent the status of the circuit
breakers, otherwise it will remain off.
✱✱ If the contacts have been connected properly, the LED will represent the status of the circuit
breakers, otherwise the LEDs will remain off.
ALARM LED
(red)
POWER SUPPLY LED
(green)
SET key LED
(red)
AUT key LED
(red)
MAN key LED
(red)
RESET key LED
(red)
Led L1/L2/L3
Presence of
voltage on main
line (red)
Main line /
secondary line
CONTROLS LED
(two-colors)
Status LED,
main line
circuit breaker
Status LED,
secondary line
circuit breaker
Led L1/L2/L3
Presence of voltage
on secondary line
(red)
• The following table describes the meaning of the various LEDs.
Some of them are bicolor and have a different meaning according to the color.
7
• The four keys SET / AUT / MAN / RESET can be used to select the required operating
mode, which will be indicated when the corresponding red LED lights up.
• If the LED indicating the selected operating mode flashes, it means that the device is
communicating through the serial interface and that it could execute remote commands,
including the mode change as well.
3.1 Reset mode (red RESET key LED)
• The electronic control box does not execute operations but it just displays the status of
the voltages and the circuit breakers.
• The opening and closing control outputs of the switches remain all open, hence allowing
for the manual control from the front side of the motor controls. If the emergency input
is activated, the unit will in any case order the opening of the switches.
• The generator control output will set up for switching off the group.
• The status alarms of the circuit breakers are disabled.
• When an alarm occurs, it must be reset by pressing the RESET key. If you are already in
this operating mode, press the RESET button again.
3.2 Manual mode (red MAN key LED)
• The manual mode allows the operator to electrically open/close the circuit breakers with
the special keys located at the front side of the device.
• In this mode, the voltages are constantly monitored but the device just displays their
status.
• When one of the control keys is pressed for at least 300ms, the electronic control box
changes the status of the circuit breakers from open to closed and vice-versa.
• If a command is given to close a circuit breaker while the other is already closed, the unit
will initially open the other circuit breaker, wait for the interlocking time and then it will
close the required circuit breaker.
• In manual mode, all the status alarms of the circuit breakers (disconnected and tripped)
are disabled. The anomalous condition is signaled on the LED but it will not be stored or
dealt with as an alarm.
• It is possible to manually control the startup and shutdown of the generator by holding
down the key (G) MAN for 5 consecutive seconds. As long as the manual mode is kept,
the status of the generator will remain the one required.
3.3 Automatic mode (red AUT key LED)
• In automatic mode, the device independently executes both opening and closing
operations of the circuit breakers as well as the startup and shutdown of the generator,
if any.
• When the main line (MAIN) goes beyond the limits, after the set delay times, the device
disconnects the load from the main line and connects it to the secondary line (SEC),
thus controlling both the startup of the generator, if any, and the changeover times
between the circuit breakers.
• When the main line falls within the limits, the device switches again the load on it and
determines the cooling cycle, if required, of the generator.
• The automatic cycles of operation vary according to the type of application (utility-to-
utility, utility-to-generator).
3. Operating mode
Electronic Control Box
8
3.5 On-load test mode
• By starting from the automatic mode and by pressing the (F) and (D) key simultaneously
for 5 consecutive seconds, it will be possible to carry out an operational test (on-load
test) which will totally simulate a lack of the power line voltage lasting one minute.
• Hence, the unit behaves exactly as if the line has fallen out of the limits, thereby
using all programmed times and parameters for the changeover so as to verify their
adequacy.
• The execution of the on-load test is determined by TES flashing on the display.
• To end the execution of the test in advance, repeat the procedure with keys (F) and (D)
for 5 seconds or start the reset mode.
3.4 Off-load test mode
• By starting from the automatic mode and by pressing the (F) key for 5 seconds, it will be
possible to test the generator for 5 minutes.
• The generator is manually started in order to check its operation but since the electronic
control box is in automatic mode, the voltage controls will remain active.
• By doing so, it is possible to verify the correct operation of the generator, thus maintaining
the coverage of the load. Under normal conditions, the load remains connected to the
main line, hence the generator operates with no load (off-load).
• The execution of the off-load test is determined by TES written steadily on the display.
• To end the execution of the test in advance, press the (F) key again for 5 seconds or start
the reset mode.
4.1 Utility-to-generator Application
• In the Utility-to-generator application (U-G, default setup) the load is normally connected
to the main line. If there is an anomaly on the line or in case of a transfer signal set from
the outside, a start signal will be sent to the generator which supplies the secondary
line.
• When the voltage of the generator reaches the programmed limits, the electronic control
box will order the changeover on the secondary line.
• When the main line returns, the load is transferred again and the generator is kept in
operation with no load for a certain period of time so as to allow its cooling.
• The unit sends a start/stop command to the group through a relay output and can receive
digital signals from the group indicating its status through programmable inputs.
4.2 Utility-to-utility Application
• In the utility-to-utility application (U-U), the load is normally connected to the main line
and the changeover to the secondary line occurs if there is an anomaly on the main line
or in case there is a transfer signal set from the outside.
4. Applications
Please note: The execution of
this test involves transferring
the load, hence a power failure
during the changeover due to
the interlocking times.
A
E
C
F
G
H
B
D
9
• The circuit breakers control is carried out through two separate relays, one for closing
and one for opening.
• In reset mode, both control relays remain open, except for the emergency condition
where the opening can be controlled.
• In case of an anomaly on the switch, hence causing an alarm, the control outputs will
both be opened till the resetting of the alarm.
• There are two separate modes for controlling the circuit breakers. These can be selected
by using the parameter P1.03
5.1 With feedback (default setup)
• The status indicated by the two-color front LED is the one detected by the auxiliary
contacts.
• The timeout alarms are enabled. They are generated if the circuit breakers do not reach
the required position within a programmable time P1.04 or immediately if they change
position when no command has been sent.
• The control outputs are timed. When the circuit breaker has executed the required
operation, the output still remains energized for a certain period of time (+1 second
during closing and +15 seconds during opening, in order to allow the springs of the
motor operators to be completely charged) and then it is released.
• The normal status of the control outputs is open.
• The interlocking times start when the first circuit breaker is actually opened, detected by
the input, and last for 0.5 steady seconds.
Example of a changeover with
feedback, assuming a utility-to-
utility commutation.
The feedback input status is
shown in blue.
The status of the control outputs
is shown in green.
The changeover time is shown
in yellow.
5.2 Without feedback
• The circuit breakers status LEDs remain off.
• The timeout alarms are disabled.
• The Opening/Closing control outputs remain constantly in the required position for the
circuit breaker.
• The changeover times between the opening of a switch and the closing of another start
during the commutation of the outputs and are steady at 6 sec.
Example of a changeover with
no feedback.
The actual status of the circuit
breakers is shown in blue.
The status of the control outputs
is shown in green.
The changeover time is shown
in yellow.
5. Circuit breakers
control
The auxiliary contacts of
the circuit breakers are
wired in their imputs.
With the feedback is
necessary to use for the
opening operation of
DPX 250-630-1600 the
shunth trip relay or the
undervoltage relay.
The auxiliary contacts
of the circuit breakers
are not wired in their
inputs, hence the
electronic control box
is not informed on their
actual state.
Electronic Control Box
10
• TAny condition required to determine whether a supply source is or is not suitable is
determined by the user through the P0 menu (system nominal data) and the P2 and P3
menus (voltage control, main line and secondary line, respectively).
• It is possible to set up the system nominal data, such as nominal voltage and frequency,
through the P0 menu, which will be used as a reference for setting up the percentage
thresholds of the following menus.
• It is possible to set up a TV transformation ratio in case a lower voltage, relative to the
actual voltage of the system, is applied to the voltage inputs of the unit. Here, again, the
display and the setup of the thresholds will be executed in actual sizes referred to the
system.
• The electronic control box can be programmed to perform voltage controls on three-
phase, two-phase or single-phase nets (via the P0.03 parameter).
The following describes the anomalies monitored by the voltage control.
Columns M7000CB and M7000CB/EVO point out the presence of the function within their
unit models.
Control M7000CB M7000CB/EVO Description
Minimum voltage • • One or more phases too low
Maximum voltage • One or more phases too high
Phase failure • •
Threshold under which the device can
operate faster compared to a normal
reduction
Asymmetry
(unbalance)
•
Phases included in the Maximum-Minimum
interval, yet too different between each other
Minimum frequency • Frequency too low
Maximum frequency • Frequency too high
Sequence of phases • Reverse rotation of phases
•
Each anomaly has an independent delay time. The anomaly must last consecutively longer
than the time specified for invalidating the voltage presence signal.
• All controls, except for the minimum voltage control, can be excluded separately by
setting the related parameter to OFF.
• The minimum and maximum voltage limits are specified by setting up two thresholds
each, one which determines the point beyond which the voltage is no longer considered
acceptable (e.g. P2.01) and the other, closer to the nominal voltage, which determines
the point in which it becomes compatible again (e.g. P2.02). The distance between
these two thresholds determines the hysteresis. For instance, it may be considered
that when the nominal value is below 80%, the voltage may no longer be useable and
that in order to be considered useful, it must rise over 85%, thereby determining a 5%
hysteresis.
The same concept applies to the maximum voltage.
• As for the frequency thresholds, there is a fixed 1% hysteresis of the nominal frequency.
• The retrieval after a phase failure occurs when the voltage rises above the minimum
voltage retrieval threshold.
Example of variation of the main
line voltage within the mini-
mum and maximum thresholds
and relative hystereses, with
indication of the presence /
absence delay times. The ex-
ample considers the second-
ary line voltage absent with its
circuit breaker open, hence
the changeover times are not
shown. The INTERR. bar repre-
sents the required status of the
main line switch.
6. Voltage controls
11
7.1 Setting the parameters
• Press the H and E keys for 5 consecutive seconds to start programming
• The flashing LED of the E key indicates that programming is in progress
• Main line display indicates the parameter selected via the code (for instance P0.01)
• Secondary line display indicates the set value of the selected parameter (for instance 400)
• Changing of parameters of the same group by pressing the key A
• Movement to next group with key E
• Movement to previous group with key H
• Enable modification of the parameter with key B
• Increase the value of the selected parameter with key F
• Decrease the value of the selected parameter with key G
• Confirm by pressing key B
• While modifying a parameter, the secondary line display flashes with the current value of
the parameter. In this situation it is not possible to move to another parameter without first
confirming
• Exit from Setup by pressing E and H simultaneously
7. Programming
Key E
- Goes to Setup
- Exits to higher level
Key A
It moves at
same level
Key B
- Enable modification
- Confirms setup
Key F
Increases parameter value
Key G
Decreases parameter value
Key H
Goes to lower level
Electronic Control Box
12
Menu Description
P0
System nominal data
P1
General Data
P2
Main line voltage control
P3
Secondary line voltage control
P4
Programmable inputs
P5
Programmable outputs
P6
Communication port
Setup Description Range Default
P0.01 B
Nominal voltage Ue 100 … 690 VAC 380 VAC
P0.02 B
Transformation ratio TV 1.00 … 9.99 1.00
P0.03 B
Type of connection
3Ph = Three-phase
2PH = Two-phase
1Ph = Single-phase
3Ph
P0.04 B
Nominal frequency Fe
50H = 50Hz
60H = 60Hz
50Hz
P0.05 B
Nominal battery voltage
OFF = No battery
12 = 12 VDC
24 = 24 VDC
48 = 48 VDC
OFF
P0.01 Nominal voltage used for calculating the thresholds, which are expressed in Un percentage
P0.02 Leave default setup in case a TV is not used
P0.04 Nominal frequency used as a reference for calculating the frequency thresholds
P0.05 Used for the alarms on the battery voltage
7.2 Table of menus
7.3 P0 menu - Nominal data
13
Setup Description Range Default
P1.01
Type of application
U-G = Utility-to-Generator
U-U = Utility-to-Utility
U-G
P1.02
Control of phase sequence
OFF - Disabled
123 - Direct
321 - Opposite
OFF
P1.03
Changeover control
FEE - With feedback
NOF - Without feedback
FEE
P1.04
Circuit breakers Timeout OFF / 1…900s 5 s
P1.05
Enable control of withdrawn
OFF (Control disabled)
ON (Control enabled)
OFF
P1.06
Maximum time load not powered
(A07 alarm delay)
OFF / 1…3600s
OFF
P1.07
Startup delay time, generator 0 …. 900 s 1 s
P1.08
Cooling time, generator 1…3600s 120 s
P1.09
Minimum battery voltage threshold OFF / 70…100% 75%
P1.10
Maximum battery voltage threshold OFF / 110…140% 130%
P1.11
Battery threshold delay time 0…60 s 10 s
P1.01 Determines the type of commutation (utility-to-utility/ utility-to-generator)
P1.04 If, after sending an opening or closing command to a switch, it does not place itself correctly
within this time, the A03 or A04 alarms will be generated
P1.05 Enable the control only if their contacts are wired
P1.06 If both sources are simultaneously unavailable in automatic mode for a period of time longer
than P2.09, the A07 alarm will be generated
P1.07 Time between the line failure used below and transmission of the startup signal to the generator
on the secondary line.
It is a time which is independent from the circuit breaker opening time
P1.08 Time whereby the generator is left in operation in order to cool down after being disconnected
from the load
7.4 P1 menu - General data
The highlighted param-
eters are included only in
versionM7000CB/EVO
Electronic Control Box
14
Setup Description Range Default
P2.01
Minimum voltage threshold - release 70…98 % Ue 85 % Ue
P2.02
Minimum voltage threshold - retrieval 75…100 % Ue 90 % Ue
P2.03
Minimum voltage threshold delay 0.1 …. 900 s 1.0 s
P2.04
Maximum voltage threshold - release 102…120 % Ue / OFF 115 % Ue
P2.05
Maximum voltage threshold - retrieval 100…115 % Ue 110 % Ue
P2.06
Maximum voltage threshold delay 0.1 …. 900 s 1.0 s
P2.07
Threshold of phase failure 60 … 85% Ue / OFF 70 % Ue
P2.08
Phase failure threshold delay 0.1 … 30.0 s 0.1 s
P2.09
Voltage unbalance threshold 1 … 20 % / OFF 10 %
P2.10
Voltage unbalance threshold delay 0.1 … 900 s 5.0 s
P2.11
Threshold of minimum frequency OFF / 80… 100 % Fe 95 % Fe
P2.12
Minimum frequency threshold delay 0.1 … 900 s 5.0 s
P2.13
Threshold of maximum frequency 101 … 120% Fe / OFF 105 % Fe
P2.14
Maximum frequency threshold delay 0.1 … 900 s 3.0 s
P2.15
Voltage return delay on main line within
the limits (when circuit breaker secondary
line open)
1 … 3600 s 10 s
P2.16
Voltage return delay on main line within the
limits (when load on secondary line)
1 … 3600 s 60 s
P2.01 - P2.02 - P2.03 - The first two parameters determine the minimum voltage threshold and its
hysteresis when retrieved. P2.02 cannot be set to a value which is lower than P2.01. P2.03 determines
the delay time for the activation of this protection. See chapter on Voltage controls
P2.04 - P2.05 - P2.06 - The first two parameters determine the maximum voltage threshold and its
hysteresis when retrieved. P2.05 cannot be set to a value which is higher than P2.04. Setting P2.04 to
OFF will disable the maximum voltage control. P2.06 determines the maximum voltage tripping delay.
See chapter on Voltage controls
P2.07 - P2.08 - Voltage threshold under which there is an activation due to phase failure, usually faster
than the reduction. The delay time for the phase failure is specified by P2.08
P2.09 - P2.10 - P2.09 determines the maximum unbalance threshold between the phases, referred to
the nominal voltage; P2.10 determines the relative tripping delay.
This control can be disabled by setting P2.09 to OFF
P2.11 - P2.12 - Threshold (disabled) and minimum frequency tripping delay
P2.13 - P2.14 - Threshold (disabled) and maximum frequency tripping delay
P2.15 - Return delay time on main line within the limits, used when the source of the secondary line
is not available. Normally shorter than P2.16: since the load is not powered, it is necessary to supply
voltage
P2.16 - Return delay time on main line within the limits, used when the load can be connected to the
secondary line. Normally longer than P2.15: since the load is “covered”, it is possible to wait longer
before considering the voltage stably retrieved
7.5 P2 menu - Main line voltage control
The highlighted param-
eters are included only in
version M7000CB/EVO
15
Setup Description Range Default
P3.01
Minimum voltage threshold - release 70…98 % Ue 85 % Ue
P3.02
Minimum voltage threshold - retrieval 75…100 % Ue 90 % Ue
P3.03
Minimum voltage threshold delay 0.1 …. 900 s 1.0 s
P3.04
Maximum voltage threshold - release 102…120 % Ue / OFF 115 % Ue
P3.05
Maximum voltage threshold - retrieval 100…115 % Ue 110 % Ue
P3.06
Maximum voltage threshold delay 0.1 …. 900 s 1.0 s
P3.07
Threshold of phase failure 60 … 85% Ue / OFF 70 % Ue
P3.08
Phase failure threshold delay 0.1 … 30.0 s 0.1 s
P3.09
Voltage unbalance threshold 1 … 20 % / OFF 10 %
P3.10
Voltage unbalance threshold delay 0.1 … 900 s 5.0 s
P3.11
Threshold of minimum frequency 99 … 80 % Fe / OFF 95 % Fe
P3.12
Minimum frequency threshold delay 0.1 … 900 s 5.0 s
P3.13
Threshold of maximum frequency 101 … 120% Fe / OFF 105 % Fe
P3.14
Maximum frequency threshold delay 0.1 … 900 s 3.0 s
P3.15
Voltage delay of secondary line within
the limits
1 … 3600 s 20 s
Note: For explanations on the
operation of parameters, see
previous page concerning the
main line menu
Programmable input functions
Function Description Notes
OFF
OFF Input not used
For
Forced changeover on secondary line
When closed, it forces the changeover on the
secondary line even if main line voltage is within
the limits. Re-commutation occurs on the main
line when the input is released or in case the
secondary line voltage is not within the limits
IN.R
Inhibition return on main line
In automatic mode, when closed, it blocks
the automatic return on the main line after the
main line voltage has returned within the limits.
It is used for preventing the second power
cutoff, due to the re-transferal, from occurring
automatically in an unexpected moment
S.GE
Generator voluntary Start/stop
In automatic mode, when closed, it starts up
the generator
EME
Emergency
NC contact which, if opened, opens both circuit
breakers and generates an alarm
G.rE
Generator ready
If closed, it refers to a Generator in automatic
mode and not in alarm mode.
If opened, it generates an alarm code
Loc
Keyboard total lock
If closed, it locks all keyboard functions except
for measurement views
L.PA
Lock parameter access If closed, it locks the access to setups
7.6 P3 menu - Secondary line voltage control
Setup Description Range Default
P4.01
Programmable input function 1
See list
“Programmable
input functions”
For
Forced changeover
on secondary line
P4.02
Programmable input function 2
In.r
inhibition return
on main line
7.7 P4 menu - Programmable inputs
The highlighted param-
eters are included only in
version M7000CB/EVO
Electronic Control Box
16
Setup Description Range Default
P5.01
Output function
Programmable 1
See list “Programmable
output functions”
S.GE
Start generator
P5.02
Output function
Programmable 2
See list “Programmable
output functions”
RDY
ATS Ready
P5.03
Output function
Programmable 3
See list “Programmable
output functions”
ALA
Global alarm
Function Description Notes
OFF
OFF Output not used
S.GE
Consent to start up the generator
When closed, the generator must be inactive.
Contact opens to start generator.
If the unit is not powered, the generator starts
RDY
Automatic transfer switch ready
Indicates unit automatically and without alarms,
ready to start operating
ALA
Global alarm De-energizes in case of an alarm
MCM
Minimum coil
Main line
Main line switch voltage minimum opening
coil command
MCS
Minimum coil
Secondary line
Secondary line switch voltage minimum opening
coil command
L.SH
Non-priority load disconnection
Disconnection of the non-priority loads that are
not powered by the secondary line branch.
It is also controlled on the secondary line.
Contact which is closed before the secondary
line closing command and opened before the
main line closing command
Programmable output functions
P6.01…P6.04 They determine the transmission format and the protocol used on communication port
RS-232
P6.05…P6.08 They determine the transmission format and the protocol used on communication port
RS-485, available only on M7000CB/EVO
7.8 P5 menu - Programmable outputs
Setup Description Range Default
P6.01
Serial address RS-232 1…245 01
P6.02
Speed (baudrate) RS-232
240 = 2400
480 = 4800
960 = 9600
19.2 = 19200
38.4 = 38400
960
P6.03
Protocol RS-232
Rtu = Modbus RTU
ASC = Modbus ASCII
RTU
P6.04
Parity RS-232
No = None
EVE = Even
Odd = Odd
No
P6.05
Serial address RS-485 1…245 01
P6.06
Speed (baudrate) RS-485
240 = 2400
480 = 4800
960 = 9600
19.2 = 19200
38.4 = 38400
960
P6.07
Protocol RS-485
Rtu = Modbus RTU
ASC = Modbus ASCII
RTU
P6.08
Parity RS-485
No = None
EVE = Even
Odd = Odd
No
7.9 P6 menu - Serial communication
The highlighted param-
eters are included only in
version M7000CB/EVO
17
The following messages can be displayed, at different moments:
Code Description
- - -
(Dashes) - The interlocking time is in progress.
They are displayed from the side in which the load is being transferred
Sta
(Start) - Indicates that the Start Generator command has been sent
Coo
(Cooling) - Indicates that the generator is being left running for the cooling
Tes
(Test) - When steady, it indicates that an off-load test - namely a power unit test
with the voltage controls active - is currently in progress
Tes
(Test) - When flashing, it indicates that an on-load test, namely an automatic net
failure simulation, is currently in progress
Loc
(Locked) - It indicates that the keyboard function one is trying to execute is
locked
8. Diagnostic
messages
• When the unit is running, it is possible to verify a number of abnormal situations which are
signaled in different ways.
• Some alarms (tripped, withdrawn) have a dedicated LED which begins to flash when the
alarms go on.
• Other alarms are signaled through a code which consists of an A (alarm) and a number
indicating which alarm it is. This code will be flashing on one of the displays. If the code
refers to the main line branch, the alarm will be displayed on the left. Conversely, if the
code refers to the secondary line branch or if it is a generic alarm (e.g. battery), it will be
displayed on the right.
• When an alarm goes on, the red LED “ALARM” flashes in sync with the dedicated LED or
with the alarm code.
• The Global alarm relay output is de-energized during alarm conditions whereas it is
energized under normal conditions. If the unit does not operate due to a failure or power
supply problems, it will generate an alarm condition on its contact.
• Some alarms are automatically reset when the conditions generating them fail to work.
• Other alarms, described in the chart in the RIT column, are retentive, thus they are
stored.
• Once the alarm has been stored, the abnormal conditions must be eliminated in order to
be reset. Also, the operator must press the RESET key or send a special message via the
serial interface.
9. Alarms
Electronic Control Box
18
Alarm list
Code Led
Description
alarm
Causes RIT RESET MAN AUT
A01
Battery voltage
too low
This occurs if the P0.06 parameter is OFF and
if the battery voltage measured remains lower
than the threshold % set with P1.09 for the
time set with P1.11
YES YES YES YES
A02
Battery voltage
too high
This occurs if the P0.06 parameter is not OFF
and if the battery voltage measured remains
higher than the threshold % set with P1.10 for
the time set with P1.11
YES YES YES YES
A03
Main line
switch timeout
It is generated if the main line switch does not
move to the position controlled by the unit
within the time determined by P1.04 or if it
comes out of the required position on its own.
The alarm can be generated when closing and
when opening. If there is no power on both
lines, the alarm will not be generated
YES NO NO YES
A04
Secondary line
switch timeout
It is generated if the secondary line switch
does not move to the position controlled by
the unit within the time determined by P1.04
or if it comes out of the required position on
its own. The alarm can be generated when
closing and when opening. If there is no power
on both lines, the alarm will not be generated
YES NO NO YES
A05
Main line incorrect
phase sequence
If enabled by parameter P1.02, it is generated
when a phase sequence – different from what
has been specified in P1.02 – is detected,
after a delay of about 500 ms.
In order for the sequence to be detected, all
three phases must be > 50VAC
YES YES YES YES
A06
Secondary line
incorrect phase
sequence
As the previous, referred to the secondary line
voltage
YES YES YES YES
A07
Timeout load
not powered
The load was left with no voltage for a period
of time longer than P1.06.
The main line and the secondary line were not
available (no power or switch not closed)
NO NO NO YES
A08
Generator
not available
One of the programmable inputs is set to
“Generator ready”, hence signaling that the
generator is not available
NO YES YES YES
A09
Emergency
One of the programmable inputs is set to the
emergency button and the corresponding
input contact is open
YES YES YES YES
A11
Main line
frequency outside
limits
The frequency of the main line is not within
the limits determined with P2.11 and P2.13
NO YES YES YES
A12
Secondary line
frequency outside
limits
The frequency of the secondary line is not
within the limits determined with P3.11 and
P3.13
NO YES YES YES
A13
Main line voltage
asymmetry
The difference between the higher and lower
voltage between lines of the main line exceeds
the limit determined with P2.09
NO YES YES YES
A14
Secondary
line voltage
asymmetry
The difference between the higher and lower
voltage between lines of the secondary line
exceeds the limit determined with P3.09
NO YES YES YES
•
Main / secondary
line withdrawn.
Switch removed
The withdrawn input control is enabled by
parameter P1.05 and the corresponding main
line or secondary line input contact is open
YES VIS VIS YES
•
Main / secondary
line tripped.
Protection
activation.
Switch
The tripped input contact it is closed.
This condition is ignored for 15 seconds
which begins immediately after giving the
command to open a switch so as to avoid
false signalings when using a release coil
YES VIS VIS YES
The highlighted alarm
are included only in ver-
sion M7000CB/EVO
19
Mors. Function
1
Main line circuit breaker opening
2
Common main line commands
3
Main line circuit breaker closing
4
Secondary line circuit breaker opening
5
Common secondary line commands
6
Secondary line circuit breaker closing
7
Programmable relay 1
(Default function = Start/Stop generator)
8
Common programmable relay 1
9
Common programmable relay 2
10
Programmable relay 2/NO
(Default function = Unit ready)
11
Programmable relay 2/NC
(Default function = Unit ready)
12
Common programmable relay 3
13
Programmable relay 3/NO
(Default function = Global alarm -
closed when ok)
14
Programmable relay 3/NC
(Default function = Global alarm)
15
AUX input of Main line circuit breaker
Mors. Function
16
AL input of Main line circuit breaker
17
DISCONNECTED input of Main line circuit
breaker
18
AUX input of Secondary line circuit breaker
19
AL input of Secondary line circuit breaker
20
DISCONNECTED input of Secondary line
circuit breaker
21
Programmable input 1
(Default = Forcing on secondary line)
22
Programmable input 2
(Default = Inhibition return on main line)
23
+ VDC supply
24
– VDC supply
25
Common for inputs (from 15 to 22)
26
AC supply
27
AC supply
MAIN
L1 L2
L3 N
Main line three-phase measurement input
SEC.
L1 L2
L3 N
Secondary line three-phase
measurement input
10. Connections
Electronic Control Box
20
Auxiliary power supply
DC power supply operating limits 9...70VDC (Us=12-24-48VDC)
AC power supply operating limits 187…264VAC (Us=220…240VAC)
Frequency 45…65Hz
Max. absorbed power 6VA (Us=240VAC)
Max. dissipated power 4,8W (Us= 240VAC or Us=48VDC)
Max. absorbed current 420mA to 12VDC; 200mA to 24VDC; 100mA to 48VDC
Micro-breaking immunity time 50ms
Voltage inputs
Max. rated voltage (Ue) 690VAC phase-phase (400VAC phase-neutral)
UL usage data 600VAC phase-phase (340VAC phase-neutral)
Measuring range 80…800VAC phase--phase
Frequency range 45…65Hz
Type of measurement TRMS (true effective value)
Measurement input impedance >1,1MΩ phase-phase and >0,5MΩ phase-neutral
Type of connection One, two or three phase
Measurement error Class 0,5 ±0,25% f.s. ±1digit
Digital inputs
Type of input Negative
Input current ≤10mA
Input current “0” state ≤1,5 (typical 2,9V)
Input current “1” state ≥5,3 (typical 4,3V)
Input signal delay ≥50msec
Relay outputs terminals 1-2 and 4-5
Type of contact 1 NO
Nominal range at 250VAC 12A
Contact nominal range 16A in AC1 250V - B300
Maximum current on terminal 1.2 12A
Relay outputs terminals 2-3 and 5-6
Type of contact 1 NO
Contact nominal range 8A in AC1 250V - B300
30VDC 1A Auxiliary service supply
Maximum current on terminal 2.2 12A
Relay outputs terminals 7-8
Type of contact 1 NO
Contact nominal range 8A in AC1 250V - B300
30VDC 1A Auxiliary service supply
Relay outputs terminals 9-10-11 and 12-13-14
Type of contact 1 change-over contact
Contact nominal range 8A in AC1 250V - B300
30VDC 1A Auxiliary service supply
Communication interfaces
RS232 serial interface Programmable Baud-rate 1200…38400 bps
Connection via RJ6/6 connector
RS485 serial interface
(COM only)
Isolated with programmable Baud-rate
1200…38400 bps
Connection via removable terminals
Insulation
Rated insulation Voltage (Ui) 690V
Environmental operating conditions
Operating temperature -20…+60°C
Temperature -30…+80°C
Relative humidity <90%
Maximum Pollution degree Degree 3
Overvoltage category 3
Connections
Type of terminal Removable
Conductor section (min. and max.) 0,2…2,5 mmq (24÷12 AWG)
Tightening torque 0,5 Nm (4,5 LBin)
Housing
Material Thermoplastic LEXAN 3412R
Version Flush mounting
Dimensions L x H x D 144 x 144 x 94mm
Protection degree IP41 on front, IP20 on back
Weight 950g
Certifications and compliance
Certifications and compliance:
IEC/EN 61010-1, IEC/EN 61000-6-2, CISPR 11/EN 55011, IEC/EN 61000-3-2, IEC/EN 61000-3-3,
IEC/EN 60068-2-61, IEC/EN 60068-2-27, IEC/EN 60068-2-6, UL508 C22.2-N°14-95
11. Technical
features
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