Emerson FXMP25 User Manual page 62

Trip
OV
Over voltage
• Check AC supply is within specification
• Check that notching on the AC supply is not excessive. Refer to section 8.5
reactors
PS Internal FXMP25 power supply trip
Return to the supplier
PS.24
24V comms power supply overload
Check connection to the Mentor MP / serial port connector
Tune
Autotune stopped before completion
See Pr 12 (Autotune)
9.2 Trip categories
Trips can be grouped into the following categories. It should be noted that a trip can only
occur when the FXMP25 is not tripped or is already tripped but with a trip with a lower
priority number.
Table 9-2 Trip categories
Priority
1
2
3
4
5
Unless otherwise stated, trips cannot be reset until 1.0s after the trip has been triggered
by the FXMP25
9.3 Alarm indications
Table 9-3 Alarm indications
Right hand
display
hot
The heatsink temperature is approaching the over temperature threshold
(see O.ht2).
FAIL
An attempt has been made to default the FXMP25 when it is enabled
[Pr 77 = On (1)].
n.SEr
The FXMP25 cannot communicate with the Mentor MP
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Category
Hardware faults HF01 to HF11
Self resetting
trips
Non-resetable
HF17 to HF29
trips
EEF trip
All other trips not
Normal trips included in this
Heatsink temperature too high
Load default when the FXMP25 is active
No communication between FXMP25 and Mentor MP
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Diagnosis
Trips
These indicate fatal problems and cannot
be reset. The FXMP25 is inactive after
one of these trips and the display shows
HFxx.
Under voltage trip cannot be reset by the
user, but is automatically reset by the
UV
FXMP25 when the supply voltage is
within specification.
Cannot be reset
Cannot be reset unless a code to load
EEF
defaults is first entered in Pr 00
Can be reset after 1.0s
table
Description
Line
Comments
FXMP25 User Guide
Issue Number: 3