Temperature Monitoring; Reset After A Fault - Pilz PKB-M Bedienungsanleitung

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U (L1-L2)
B
Enable (8-9)
Motor contactor
Reset contact (6-7)
Brake contactor
Braking current
Motor standstill
(W-U)
Monitoring time
exceeded
Standstill
detected
t : Enable at terminal 8-9
1
t : Motor on
2
t : Braking time
3
Fig. 2: Brake until standstill

Temperature monitoring

The temperature monitoring protects the semiconductor from thermal
overload. If the temperature is too high, the braking and the motor will be
switched off immediately.

Reset after a fault

After rectifying a fault you must either reset manually or the brake unit
goes automatically into "ready for operation". This status can be set.
PKB-M, PKB-MS Operating Manual
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1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
t t t t t
1 2 V1 V2 3
t t
V3 V4
t
4
t : Braking current overrun
4
t : Monitoring time
5
t ... t : Safety times
V1 V4
t
5
5