ABB ACS880 - Page 378

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
Fault / uint32Enables 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 1.25 INU
momentary cos φ. See also, Sync loss function
Note: The supervision function activates automatically
when parameter 99.3 Motor type = Permanent magnet
motor.
Sync loss
supervision
31.201
0Supervision is not used. Only parameter 31.200 Sync
loss status word, bit b0 is set to 1.
Not used
1Supervision triggers the warning when it detects a sync
loss condition, and sets parameter 31.200 Sync loss
status word, bits b0 and b1 to 1.
Warning
2Supervision triggers the fault when it detects a sync
loss condition, and sets parameter 31.200 Sync loss
status word, bits b0 and b2 to 1.
Fault
20.00% / real32Defines the minimum frequency limit in percent for
detecting sync loss condition. Parameter 99.8 Motor
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.
Sync loss minimum
detection limit
31.202
100 = 1% / 1 = 1%Minimum frequency limit in percent for sync loss
detection.
0.00 ... 200.00%
378 Parameters