Combined Operate And Start Alarm Signal; Combined Restart Inhibit And Restart Enable Signal - ABB RELION 630 Series Applications Manual

Section 3
REM630 variants
3.3.6.16
3.3.6.17
56
Two master tripping signals are available at binary output PSM PO1 and PSM PO3.
The lockout reset binary input available at COM BI10 is connected to the tripping
circuit to reset the circuit-breaker lockout function.
GUID-BAA37AD1-1B9D-4E4C-8A07-A77A737C0D84 V1 EN
Figure 21: Tripping logic

Combined operate and start alarm signal

The operate outputs of all protection functions are combined in an OR-gate to get a
common Operate output. This common operate signal is connected to a tripping logic.
It is also available as an alarm binary output, PSM SO1, with a settable minimum
alarm delay of 80 ms. Also, a common Start output is derived from the start outputs of
protection functions combined in an OR-gate. The output is available as an alarm
binary output PSM SO2 with a settable minimum alarm delay of 80 ms.

Combined restart inhibit and restart enable signal

The restart inhibit signals from the motor thermal protection, negative-sequence
overcurrent and motor startup protection function are combined in an OR-gate to
obtain a common restart inhibit signal. This signal is also connected to the disturbance
recorder and it provides a LED indication on the LHMI.
The restart inhibit signal is inverted to a restart enable signal. The restart enable signal
is active, if the emergency start is activated or if both the common operate signal and
the common restart inhibit signals are inactive. The restart enable signal is connected
to the disturbance recorder. The signal provides a LED indication on the LHMI and is
available as an output at PSM PO4 with a minimum alarm time of 80 ms.
1MRS756785 G
REM630
Application Manual