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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