11.8 H: Terminal Functions
908 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
■ 3F: PID Feedback High
Setting Function Description
3F PID Feedback High
The terminal activates when the drive detects FbH [Excessive PID Feedback].
The drive detects FbH [Excessive PID Feedback] when the PID feedback value > b5-36 [PID High Feedback
Detection Lvl] for longer than the time set in b5-37 [PID High Feedback Detection Time].
Note:
Refer to “PID Feedback Loss Detection” for more information.
■ 4A: During KEB Ride-Thru
Setting Function Description
4A During KEB Ride-
Thru
The activates during KEB Ride-Thru.
Note:
Refer to “KEB Ride-Thru function” for more information.
■ 4B: During Short Circuit Braking
Setting Function Description
4B During Short Circuit
Braking
The terminal activates during Short Circuit Braking.
Note:
• When A1-02 = 8 [Control Method Selection = EZ Vector Control], this function is available if you use a PM motor.
• Refer to “b2: DC Circuit Braking” for more information.
■ 4C: During Fast Stop
Setting Function Description
4C During Fast Stop
The terminal activates when the fast stop is in operation.
■ 4D: oH Pre-Alarm Reduction Limit
Setting Function Description
4D oH Pre-Alarm
Reduction Limit
The terminal activates when L8-03 = 4 [Overheat Pre-Alarm Selection = Operate at Reduced
Speed (L8-19)] and oH [Heatsink Overheat] does not clear after the drive decreases the frequency
for 10 cycles.
Note:
Refer to “L8-03: Overheat Pre-Alarm Selection” for more information.
■ 4E: Braking Transistor Fault (rr)
Setting Function Description
4E Braking Transistor
Fault (rr)
The terminal activates when the internal braking transistor overheats and the drive detects an rr
[Dynamic Braking Transistor Fault] fault.
■ 4F: Braking Resistor Overheat (rH)
Setting Function Description
4F Braking Resistor
Overheat (rH)
The terminal activates when the braking resistor overheats and the drive detects an rH [Braking
Resistor Overheat] fault.
The braking resistor overheats when the deceleration time is short and there is too much motor regeneration
energy.
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