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– opening and closing operations disabled.
The meanings of the inputs and outputs can be programmed several times with the same function,
for example, three outputs to indicate the open position of the circuit-breaker.
The binary inputs can be supplied as follows:
• 24 ... 240 V AC (tolerance – 15% ... + 10%)
• 24 ... 250 V DC (tolerance – 30% ... + 10%).
The minimum impulse time for it to be considered valid is about 10 ms.
The functions carried out by the control module are:
– self-opening following detection of incorrect circuit-breaker state
– self-locking following capacitor charge threshold below the minimum value required for the opening
and closing operation, self-opening if the conditions persists (Energy Failure Autotrip)
– anti-pumping relay function
– trip-free function control of the capacitor charging voltage with auto shut-down of the feeder if the
maximum charging level is exceeded
– opening for undervoltage with selection of the rated reference voltage and with possibility of
delaying opening from 0 to 5 s (-SO4).
– self-protection of the electronic power circuit with auto shut-down of the feeder in the case of
overtemperature and/or overcurrent
– control of opening and closing coil continuity
– watchdog (DO16).
8.5. Optional accessories
The accessories identified with the same number are alternative to each other.
1 - Interface for panel (HMI)
The interface allows the control and protection device incorporated in the eVM1 circuit-breaker to
be managed from the low voltage compartment door of the unit.
2 - Extended set of protections
Apart from the following basic protections (ref. IEC 60255-3 and IEC 60255-8):
– 51
Overcurrent IDMT (NI, VI, EI, LI)
– 50
Overcurrent DT1
– 50
Overcurrent DT2
– 51N Earth fault IDMT
– 50N
Earth fault DT1
– 50N
Earth fault DT2
the extended set of protections also makes the following available:
– 51MS Motor starting protection
– 66
Number of start-ups
– 51LR Locked rotor
– 49
Thermal overload
– 46
Unbalanced load.
The protections can be enabled/disabled locally by means of an RS485 port (local) or by the panel
interface with IRDA connector by means of the configuration software.
3 - Fast capacitor discharging device (see para. 14.15).
Device which allows the circuit-breaker capacities to be discharged rapidly and safely.
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