Parameter Details
12
12.7 H: TERMINALS
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 709
The drive detects FbH [Excessive PID Feedback] when the PID feedback value > b5-36 [PID HiHi Limit Level]
for longer than the time set in b5-37 [PID HiHi Time].
Note:
Refer to “PID Feedback Loss Detection” for more information.
■ 4A: DC Bus Undervolt
Setting Function Description
4A DC Bus Undervolt
The terminal activates when the DC bus voltage or control circuit power supply is less than the voltage set with L2-05 [UV
Detection Lvl (Uv1)]. The terminal also turns on when there is a fault with the DC bus voltage.
ON : The DC bus voltage is less than the setting value of L2-05.
OFF : The DC bus voltage is more than the setting value of L2-05.
■ 4B: FreqRef Loss
Setting Function Description
4B FreqRef Loss
The terminal activates when the drive detects a loss of frequency reference.
Note:
Refer to “L4-05 FrefLoss Det.Selection on page 763” for more information.
■ 4C: BrkRes Fault
Setting Function Description
4C BrkRes Fault
The terminal activates when the mounting-type braking resistor is overheating or when there is a braking transistor fault.
■ 4D: Motor OL1
Setting Function Description
4D Motor OL1
The terminal activates when the electronic thermal protection value of the motor overload protective function is a minimum of
90% of the detection level.
Note:
Refer to “L1-01 Motor Cool Type for OL1 Calc on page 738” for more information.
■ 4E: Drive PreOH
Setting Function Description
4E Drive PreOH
The terminal activates when the drive heatsink temperature is at the level set with L8-02 [Overheat Alm Level].
Note:
Refer to “L8-02 Overheat Alm Level on page 774” for more information.
■ 4F: PreOHTimeLim
Setting Function Description
4F PreOHTimeLim
The terminal activates when L8-03 = 4 [Overheat Pre-Alarm Selection = Run@L8-19 Rate] 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 on page 774” for more information.
■ 60: BrkTransFault
Setting Function Description
60 BrkTransFault
The terminal activates when the internal braking transistor overheats and the drive detects an rr [Dynamic Braking Transistor
Fault] fault.
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