YASKAWA GA700 Technical Manual page 732

11.3 b: Application
This parameter is disabled when b5-01 = 3, 4 [PID Mode Setting = Fref + PID Trim, Fref + PID Trim (D on
feedback)]. There is no limit for PID output (PID output can be positive or negative). Operates the same as setting
"1: Enabled: Negative lower limit".
0 : Lower Limit is Zero
When PID output is negative, PID output is limited to 0 and drive output is shut off.
1 : Negative Output Accepted
When the PID output is negative, the motor will rotate in reverse.
■
b5-12: Feedback Loss Detection Select
No.
Name
(Hex.)
b5-12 Feedback Loss
Detection Select
(01B0)
0 : Digital Out Only, Always Detect
The MFDO terminal set for PID Feedback Low or PID Feedback High [H2-01 to H2-03 = 3E, 3F] activates.
When the drive detects feedback loss, the keypad will not show an alarm and the drive will continue operation.
When the feedback signal is less than the level set in b5-13 [PID Feedback Loss Detection Lvl] for longer than
the time set in b5-14 [PID Feedback Loss Detection Time], the MFDO terminal set for a PID Feedback Low
activates.
When the feedback signal is more than the level set in b5-36 [PID High Feedback Detection Lvl] for longer than
the time set in b5-37 [PID High Feedback Detection Time] the MFDO terminal set for a PID Feedback High
activates.
When the feedback value is not in the detection range, the drive resets the fault output.
1 : Alarm + Digital Out, Always Det
The drive detects FbL [PID Feedback Loss] and FbH [Excessive PID Feedback]. The MFDO terminal set for
PID Feedback Low or PID Feedback High [H2-01 to H2-03 = 3E, 3F] activates. The output terminal set for
Alarm [H2-01 to H2-03 = 10] activates and the drive continues operation.
When the feedback signal is less than the level set in b5-13 for longer than the time set in b5-14, the MFDO
terminal set for a PID Feedback Low activates.
When the feedback signal is more than the level set in b5-36 for longer than the time set in b5-37, the MFDO
terminal set for a PID Feedback High activates.
When the feedback value is not in the detection range, the drive resets the fault output.
2 : Fault + Digital Out, Always Det
The drive detects FbL and FbH. The output terminal set for Fault [H2-01 to H2-03 = E] activates and the motor
coasts to stop.
When the feedback signal is less than the level set in b5-13 for the time set in b5-14, the drive detects FbL.
When the feedback signal is more than the level set in b5-36 for the time set in b5-37, the drive detects FbH .
3 : Digital Out Only, @ PID Enable
The MFDO terminal set for PID Feedback Low or PID Feedback High activates. When the drive detects feedback
loss, the keypad will not show an alarm and the drive will continue operation.
When the MFDI terminal set to PID Disable [H1-xx = 19] activates, the drive disables fault detection.
4 : Alarm + Digital Out, @PID Enable
The drive detects FbL and FbH. The MFDO terminal set for PID Feedback Low or PID Feedback High activates.
The output terminal set for Alarm [H2-01 to H2-03 = 10] activates and the drive continues operation.
When the MFDI terminal set to PID Disable [H1-xx = 19] activates, the drive disables fault detection.
5 : Fault + Digital Out, @PID Enable
The drive detects FbL and FbH. The output terminal set for Fault [H2-01 to H2-03 = E] activates and the motor
coasts to stop.
When the MFDI terminal set to PID Disable [H1-xx = 19] activates, the drive disables fault detection.
732
V/f CL-V/f OLV CLV AOLV
Sets the drive response to PID feedback loss. Sets drive operation after the
drive detects PID feedback loss.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
0
(0 - 5)