Sl.No PCM600
setting
Fault
direction
ACT outputs SIM8F
panel
LED
WHMI Remarks
Start Operate OpFwd OpRev Start Operate Direction
eous
value
since Str
and Op
are
latched.
4 Reverse Forward No No Yes No - - - Unknown
5 Reverse Yes Yes No Yes Red ON ON Reverse
6 Forward
with
previous
reverse
No No Yes No Red
(Flashing)
Latched
since a
reverse
fault
occurred
in prior
Forward WHMI
direction
is
updated
with
instantan
eous
value
since Str
and Op
are
latched.
1) In the third case, start and operate are latched in the WHMI because of a forward fault. If the fault direction changes before the previous fault
is cleared, the WHMI shows the direction as reverse since its direction variable is updated with the latest condition in SIM and start and
operate are not cleared as they are latched. In the second case, the WHMI shows Unknown direction because it ignores the direction
information if start and operate are not triggered.
To keep the operate timer active between current spikes during
intermittent earth fault, Reset delay time should be set to a value
exceeding the maximum expected time interval between fault spikes
(obtained at full resonance condition). The recommended value is at
least 300 ms.
Section 6 1MRS757488 H
Commissioning
132 RIO600
Installation and Commissioning Manual
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