49
P60.12+P26.06 as the set frequency to start running, and then determine whether the output torque
reaches P60.14 and the output frequency reaches P60.11. If these two conditions are met, the breaking
command will be output after the time delay of P60.02. Otherwise, enter the stage of the [P60.17].
When the low-speed signal input is valid, the drive will change the running frequency reference to the set
value of P60.15.
It indicates the uplink torque effective time after the brake is opened upon the entry of the downlink
command in the open loop control. The larger the motor power is, the longer the time shall be.
The low-speed running frequency will be gradually increased when the brake is released in open loop. If
the frequency is increased to P60.17, while the output torque does not reach P60.13 or P60.14, it is
deemed that the brake has mechanical exception, the drive will report (Er.bCF).
When the brake has feedback signal input, relevant function will be set. The corresponding brake
feedback signal will be detected when the braking or closing signal is output. If the corresponding
feedback signal is not received when the time delay elapses, it is deemed that the brake control is
abnormal, and the failure of Er.Fbr will be reported. If there is no feedback signal, you can set the function
code as 0, and then it will not conduct feedback detection.
4.10 Special function parameters for lifting control(Group P61)
Closed-loop control valid. When the mechanical brake is not released, monitoring encoder feedback
frequency. If the encoder speed is detected to have exceeded the set value [P61.05] for several times
within the specified time, the failure will be reported. Divide into starting and stopping two cases: 1. In
closed-loop control before the drive starts the output brake release signals, use the torque and time set
by [P60.09] and [P60.10] to test the reliability of the mechanical brake, in this process, if the encoder
feedback speed exceeds [P61.05], the drive reports Er.FbL fault. 2. No running command when the drive
stops, if the encoder feedback speed exceeds [P61.05], the drive reports Er.bsF. If this function code is
set to 0, this function is disabled.
This function is disabled when P61.08 is set as 0, or when the system adopts open loop VF control. When
the percentage of operation feedback speed relative to maximum speed exceeds P61.07 and the
duration exceeds P61.08, alarm or failure will be reported. And alarm or failure action is determined by
P61.06.
Overs
eed detection time
0.00~10.00s (0.00s)
P61.08
Overs
eed threshol
80.0~ 200.0%(120.0%)
P61.07
Overs
eed detection action selection
0~ 2(1)
P61.06
Alarm frequency before brake release
0~10.00Hz (1.00Hz)
P61.05
Brake feedback detection dela
0.00~10.00s (0.00)
P60.18
Maximum fre
uenc
of o
en loo
brake closed
0.00~ P02.16(10.00Hz)
P60.17
Downlin
low-s
eed acceleration time
0.00~10.00s (0.20s)
P60.16
Low-s
eed si
nal fre
uenc
0.00~ P02.16(25.00Hz)
P60.15
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