Parameter Details
2
2.3 b: Application
YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING 189
Applies a gain to the PID output and can help when b5-01 = 3 or 4 [PID Mode Setting = Fref + PID Trim, Fref +
PID Trim (D on feedback)].
■ b5-11: PID Output Reverse Selection
No.
(Hex.)
Name Description
Default
(Range)
b5-11
(01AF)
PID Output Reverse
Selection
Sets the function that enables and disables reverse motor rotation for negative PID control output.
0
(0, 1)
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. When b1-04 = 1 [Reverse Operation Selection =
Reverse Disabled], the lower limit is 0.
■ b5-12: Feedback Loss Detection Select
No.
(Hex.)
Name Description
Default
(Range)
b5-12
(01B0)
Feedback Loss Detection
Select
Sets the drive response to PID feedback loss/excess. Sets drive operation after the drive detects PID
feedback loss/excess.
0
(0 - 5)
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/excess, 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 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 PID Feedback High activates.
When the feedback value is not in the detection range, the drive resets the MFDO.
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 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 PID Feedback High activates.
When the feedback value is not in the detection range, the drive resets the MFDO.
2 : Fault + Digital Out, Always Det
The drive detects FbL and FbH. MFDO terminal MA-MC turns ON, MB-MC turns OFF, 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. The keypad will not show an alarm.
The drive continues operation.
When the MFDI terminal set to PID Disable [H1-xx = 19] activates, the drive disables fault detection.
4 : Alarm + Digital Out, @PID Enable
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