3
3
M
M
N
N
S
S
i
i
S
S
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
6
6
8
8
ABB MNS iS System Setup & Operation Quick Guide / System Release 6.0 – Rev.2 / Aug. 2011
Relates to
Message
Motor Starter System
Alarm condition Trip condition
IRF Hardware
(alternative 2)
NOTE:
This message is
generated due to
internal hardware
house keeping
tasks within the
MNS iS System
X n.a.
PTC Load Not Connected
Should the PTC application
be selected and enabled
and no field wiring or load
connected to the PTC
terminals, the MControl will
issue the IRF Hardware
Trip.
Suggested action:
Connect the required PTC
field wiring
IRF Hardware
(alternative 3)
NOTE:
This message is
generated due to
internal hardware
house keeping
tasks within the
MNS iS System
X n.a.
Internal Hardware Error
MStart
The MStart modules
constantly perform house
keeping checks. Should
MStart detect an internal
hardware problem, this
information is then relayed
to the MControl. The
MControl will issue the IRF
Hardware Trip.
Suggested action:
This MStart related trip
may clear if the MStart is
withdrawn and re-
inserted.
Should the problem
persist please replace the
MStart.
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