BENSHAW RSi-030-SG-4B, Service Manual

Page: 102 / 116

Pub # 890046-10-00
Dec. 2015
Section 4, Page
20
of
32
4.6 Output Phase Open Fault / No Motor Trip
Faults:
Output Phase Open and No Motor Trip
Fault Display
: Out Phase Open and/or No motor Trip
Auto Resettable
: Yes
Related Parameters
: Output Phase Open parameters
DRV-05
Motor rated Current
AFN-40
Rated motor selection (motor HP)
AFN-44
No Load motor current
and
FUN-57
No Motor Selection
FUN-58
Trip Current Level
FUN-59
Trip Time Setting
No motor Trip
, parameters DRV-05, FUN-57, 58 and 59
only
.
Description
– The drive monitors output current of all three phases. The drive turns off its
output when one or more of the output phase currents is detected as low current.
The
No motor Trip
fault is simply a low current detection level comparing the actual output
current to DRV-05 setting and is based on percentage and time set in parameters FUN-58 and
FUN-59.
For
Output Phase Open fault
, both conditions below must be met to result in an open phase
fault.
1. Output Current is less than 25% of the No-Load Current, AFN-44 for more than 1 second.
2. Output Current is less the No Motor Detection Level (percentage), FUN-58 for more than
time set in FUN-59.
Note: Output current percentage is based on DRV-05, Motor Amps.
Check Fault History:
At parameter AFN-01 (most recent fault), hit the program button, then up
arrow to view data captured at time of fault (Hz, Volts, Amps, Status). AFN-02 through AFN-05
are previous faults.