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the gap between friction surface and iron core by filler gauge.
Phenomenon
with friction noise
No friction sound, but
too loud when brake
and release
●
The size of brake gap has direct effect on the brake noises and the reliability, it should
be adjusted carefully and in time. When it is greater than 0.2mm or the noise level is
increased substantially, it is necessary to do adjustment
●
If the brake can not open fully, which will make the brake plate of the brake disc
overheating to reduce braking torque or even lead to carbonization and peeling off
during the operation. Besides, it will also possibly cause overload of the motor, and
thus the motor will overheat, which will drive the protection circuit to function or will
lead to malfunctioning or even damages
●
After adjusting the brake gap, the braking micro-switch should be adjusted to the
status which is mentioned in the item 4.3.2.
●
The encoder base of the traction machine is fixed on the iron core of brake, so loosen
the encoder each time before adjusting brake. Fix the encoder after adjusting the
brake, and the position of the encoder is changed, so the self-learning is necessary.
6.2.2 Adjustment of brake torque
The brake is already adjusted to the rated brake torque, please see the table 3. Users do
not need to readjust it.
Specifications of traction
machine
WYJ140-XX-320-2
WYJ140-XX-400-2
WYJ140-XX-450-2
WYJ140-XX-630-2
7 Emergency rescue
As there is no hand wheel and manual release device, the emergency rescue must be
executed by using emergent power supply.
●
The emergent rescue can be done by using the potential energy. When the motor has
stopped running or it runs at a speed below 5% of its rated speed and the brake is
under releasing state, short-circuit connect the 3 lead-in terminals of the motor. The
short circuit must be implemented by contactor, and make sure that the 3 lead-in
terminals and output end of inverter are in the statues of open circuit.
●
Additionally, do not replace the normal brake function with the short-circuiting of
motor's lead-in terminals, which is only an optional emergent rescue measure.
8 Protection and maintenance of the product
8.1 Routine inspection and maintenance of the product
8.1
●
After the product is put into operation, it should be made routine inspection, certain
Reason
too small
As per Step 3 to loosen anticlockwise 4 lock bolts to one
gap
small angle, then do as per step 4.
Loosen anticlockwise 4 thread bushings to a small angle,
too big gap
then tighten the 4 lock bolts completely.
Table 3
Rated torque
Brake torque of
of traction
brake
machine
(N.m)
(N.m)
115
145
132
280
160
280
225
280
Disposal method
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