ABB COM600 series, User'S & Technical Manual, Page: 52 / 60

the limit value set with the LO Acc currents Pwr threshold setting, the IPOW_LO output
is activated.
The IPOW_ALM and IPOW_LO outputs can be blocked by activating the binary input
BLOCK.
Circuit breaker spring-charged indication 5.7.
The circuit breaker spring-charged indication subfunction calculates the spring charging
time.
The operation of the subfunction can be described with a module diagram. All the
modules in the diagram are explained in the next sections.
functional_module_diagram_for_circuit_breaker_gas_pressure_alarm.png
Figure 5.7-1 Functional module diagram for circuit breaker gas pressure alarm
Spring charge time measurement
Two binary inputs, SPR_CHR_ST and SPR_CHR, indicate spring charging started and
spring charged, respectively. The spring-charging time is calculated from the difference
of these two signal timings.
The spring charging time T_SPR_CHR is available in the monitored data view.
Alarm limit check
If the time taken by the spring to charge is more than the value set with the Spring charge
time setting, the subfunction generates the SPR_CHR_ALM alarm.
It is possible to block the SPR_CHR_ALM alarm signal by activating the BLOCK binary
input.
Gas pressure supervision 5.8.
The gas pressure supervision subfunction monitors the gas pressure inside the arc
chamber.
The operation of the subfunction can be described with a module diagram. All the
modules in the diagram are explained in the next sections.
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1MRS758734 COM600 series 5.1
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