M ED I U M VO LTAG E P R O D U C T S
35
35
•
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).
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 a.c. (tolerance – 15% ... + 10%)
• 24 ... 250 V d.c. (tolerance – 30% ... + 10%).
A binary input is considered valid when the
impulse applied lasts at least 20 ms.
8.5. Optional accessories
The accessories identified by the same number
are alternative to each other.
8.5.1. ED2.0 Control module with full options
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:
- capacitor 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),
- circuit breaker in a well-defined state (either
“open” or “closed),
- positive 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:
- capacitor not charged (the energy stored is
insufficient or there is no auxiliary voltage),
- circuit breaker in an undefined state (neither
“open” nor “closed”)
- no continuity of the opening and closing coil
of the magnetic actuator.
Summary of Contents for VM1
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