Optional Accessories - ABB VM1 Installation And Service Instructions Manual

6.10. Optional accessories

The accessories identified by the same number are alternative
to each other.
1 ed2.0 Control module
The full option ED2.0 control module is available on request
as an alternative to the basic version ED2.0 control module
and must be selected during the ordering stage since the
possibility of replacing the basic module is not foreseen.
The full option ED2.0 control module is available with two
types of feeders:
• Type 1: 24 ... 48 V AC / 24 ... 60 V DC
• Type 2: 100 ... 240 V AC / 110 ... 250 V DC
and provides the following signalling, control and operating
functions:
1) signalling contacts without potential, fitted with relay,
with the following functions (for the characteristics of the
contacts without potential, see chapter 7.3.4.).
– N. 2 contacts signalling circuit-breaker open (DO1, DO2)
– N. 2 contacts signalling circuit-breaker closed (DC1, DC2)
– N. 1 contact signalling circuit-breaker ready for the
operation (DR). This is a closed contact when the circuit-
breaker is ready for the operation, i.e. when the following
conditions are met:
• c apacitor charged (the energy stored is sufficient to carry
out one closing and opening operation if the circuit-
breaker is in the "open" state or one opening operation if
the circuit-breaker is in the "closed" state),
• c ircuit-breaker in a well-defined state (either "open" or
"closed),
• p ositive outcome of the opening and closing coil
continuity of the magnetic actuator.
– N. 1 contact signalling circuit-breaker not ready for the
operation (DN). This contact is of the normally closed
type and therefore, even if there is no auxiliary voltage
its indication "the circuit-breaker is not ready for the
operation" is always correct. The indication of circuit-
breaker not ready for operation is given when even only
one of the following conditions occurs:
• c apacitor not charged (the energy stored is insufficient or
there is no auxiliary voltage),
• c ircuit-breaker in an undefined state (neither "open" nor
"closed")
• n o continuity of the opening and closing coil of the
magnetic actuator.
– N. 1 transient contact with momentary closing (for 100
ms) during the opening operation (DOR). This contact has
the same function as the one carried out by the –BB4
contact in the mechanical operating mechanism of the
VD4 circuit-breaker.
n.b. with the circuit-breaker not supplied (without auxiliary power supply)
these contacts are open, except the contact signalling circuit-breaker not
ready for the operation (dn).
26
2) binary inputs (logical inputs) for remote control:
– N. 1 input for closing command (-SC2) (top logical input
activated)
– N. 1 input for opening command (-SO2) (top logical input
activated)
– N. 1 input for additional and safety opening command
(-SO3) (top logical input activated)
– N. 1 input for circuit-breaker opening on direct command
from the PR512 protection release (-SO5) (top logical
input activated)
– N. 1 input for lock on closing command (the same
function as the one carried out by the –RL1 locking
electromagnet in the mechanical drive of the VD4 circuit-
breaker) (-SL1) (bottom logical input activated)
– N. 1 input for undervoltage opening command (-S04):
The function can be excluded (bottom logical input
activated).
N.B. The binary inputs can be supplied as follows:
• 24 ... 240 V AC (tolerance – 15% ... + 10%)
• 24 ... 250 V DC (tolerance – 30% ... + 10%).
A binary input is considered valid when the impulse applied
lasts at least 20 ms.
3) The functions carried out by the control module are:
– auto-trip following detection of wrong circuit-breaker state
after an operation attempt
– auto-trip following lower capacitor charging threshold than
the minimum value required for the opening and closing
operation
– anti-pumping relay function
– priority opening function in the case of opening and closing
commands being sent at the same time (TRIP-FREE)
– checking the capacitor load voltage with auto-shutdown of
the feeder when the maximum charging level is exceeded
– opening for undervoltage. The rated voltage is set (values
foreseen: 24-30 V AC, 48-60 V DC, 100-127 V AC/V DC
220-240 V AC/V DC) and opening can also be delayed (trip
delays foreseen: 0-0.5-1-2-3-4-5 sec). The "lock in open"
(the closing command is only accepted after the opening
function for undervoltage has been reset) and "reclosing
enabled" (the closing command is accepted even if the
opening function for undervoltage is still active) can also be
selected (-SO4)
– watchdog of the electronic power circuit with feeder auto-
shutdown in the case of overtemperature and/or overcurrent
– slow capacitor charging function (the charging power
passes from 100 watt to 40 watt, doubling the charging
time. This function is useful when self-supply by means of a
voltage transformer is to be made)
– monitoring continuity of the opening and closing coils
– management of opening attempts: after 10 unsuccessful
opening attempts the control electronics block and the DR
and EN signalling contacts are activated to indicate that the
circuit-breaker is not ready for the operation