ABB ACS880 Firmware Manual page 378

378 Parameters
No. Name / Range /
Selection
31.201 Sync loss
supervision
Not used
Warning
Fault
31.202 Sync loss minimum
detection limit
0.00 ... 200.00%
Description
Enables the Sync loss function, and selects how the
drive reacts when sync loss condition is detected.
The sync loss supervision functionality is based on the
monitoring of cos phi value in parameter
momentary cos φ. See also,
Note: The supervision function activates automatically
when parameter 99.3 Motor type
motor.
Supervision is not used. Only parameter
loss status word, bit b0 is set to 1.
Supervision triggers the warning when it detects a sync
loss condition, and sets parameter
status word, bits b0 and b1 to 1.
Supervision triggers the fault when it detects a sync
loss condition, and sets parameter
status word, bits b0 and b2 to 1.
Defines the minimum frequency limit in percent for
detecting sync loss condition. Parameter
nominal frequency is the reference for this limit.
Note:
• Below this limit supervision only monitors the cos
phi value, it does not detect sync loss condition
or trigger Sync loss warning or fault.
• Supervision detects the sync loss condition only
if actual frequency is above this limit.
Minimum frequency limit in percent for sync loss
detection.
1.25 INU
Sync loss function
= Permanent magnet
31.200 Sync
31.200 Sync loss
31.200 Sync loss
99.8 Motor
Def / Type
FbEq 16b / 32b
Fault / uint32
0
1
2
20.00% / real32
100 = 1% / 1 = 1%