9 Description of Functions and Schemes
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319
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9.11 Braking Force Test Function
1 Function description (Default setting of the system. Certain actions can be
modied by setting the parameters)
To prevent failure of the brake contactor of the motor that guarantees safe running,
periodically test whether the braking force of the brake contactor meets the
requirements and detect the braking force of the control system.
2 Wiring
Wiring is not required.
3 Parameters
Function
Code
Function
description
Setting Range Default Remarks
F2-32
Torque output
duration
1 to 10s 5
When it is set to 0, the system
uses the default value 5.
F2-33 Torque limit
1 to 150% of
the rated motor
torque
110
When it is set to 0, the system
uses the default value 110% of
rated motor torque.
F2-34
Threshold
of pulses for
judging braking
force abnormal
1 to 100 encoder
feedback pulses
0
When it is set to 0, the system
uses the default value 30.
F2-35
Threshold of
slip distance
excessive
1° to 20°
motor rotating
mechanical angle
0
When it is set to 0, the system
uses the default value 5° for the
synchronous motor and 10° for
the asynchronous motor.
F-8 Test function
8: Manual test on
braking force
0
The braking force test is enabled
with the keypad.
F7-09
Braking force test
result
0 to 2 0 /
F7-10
Braking force test
countdown
0 to 1440 1440
Countdown time is automatically
restored to 1440 at the end of
the test.
Manual test:
1) The system is in inspection state and the inspection switch is active;
2) The elevator stops in door zone and keeps door closed.
3) Triggering with the keypad: F-8 is set to 8;
4) When the system enters the test state, the MCB displays E88;
5) The shorting motor stator contactor and RUN contactor have output, and the
brake contactor has no output.
6) The system starts testing according to the output torque related to the braking
force.
7) E88 disappears on the MCB. F7-09 is displayed at the end of the test. In the case
stops running, and the fault cannot be reset.
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