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
i
S 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
i
S 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 M
Control
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
i
S System
X
n.a.
Internal Hardware Error
MStart
The M
Start
modules
constantly perform house
keeping checks. Should
M
Start
detect an internal
hardware problem, this
information is then relayed
to the M
Control
. The
M
Control
will issue the IRF
Hardware Trip.
Suggested action:
This M
Start
related trip
may clear if the M
Start
is
withdrawn and re-
inserted.
Should the problem
persist please replace the
M
Start
.