GD9924BE/V2 ABB distributed control system industrial DCS module card

Description

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This unit, internally connected to PR122/P and PR123/P, allows the remote signalling of alarms
and trips of the circuit breaker.
Four independent power relays provided on the PR120/K trip unit enable electrical signalling of
the following:
– timing for protections L, S, G (and UV, OV, RV, RP, D, U, OF, UF where applicable);
– protections L, S, I, G, OT, (and UV, OV, RV, RP, D, U, OF, UF where applicable) tripped and
other events;
– in addition, by using an external device (PR010/T, BT030, PR120/D-BT), the contacts can be
freely configured in association with any possible event or alarm.
PR120/K can also be used as actuator for the Load control function.
In addition the unit can be provided with a digital input signal, enabling the following functions:
– activation of alternative set of parameter (PR123/P only);
– external trip command
– trip reset of the trip unit
– reset of PR120/K power relays
When the digital input is required the power relays have a common connection (see circuit
diagrams Chapter 8).
This latest kind of connection must be specified in the order when required together with the circuit
breaker. When PR120/K is ordered as loose accessory both of the configurations are possible.
The auxiliary 24VDC power supply is needed for the unit (shown by a green Power LED). Four
yellow LEDs show the status of each output relay.
The use of Voltage Transformers is mandatory for rated voltages higher than 690V.
The PR120/K can not work with the IO o/c internal contacts.