Operation - YASKAWA CDBR Series Installation Manual

+ −
3
Drive
(Inverter)
Fig. 23 Example of Parallel Connection of Three Braking Units

4.5 OPERATION

Check that required deceleration characteristics can be obtained. While the brak-
ing unit is operating, BRAKE lamp lights for easy check of operation.
High voltage is applied to the braking unit. At normal operation,
NOTE NOTE
do not operate the unit without cover.
Braking Resistor
Overheat Contact
(Thermal Relay Trip Contact)
Braking
1 2
Resistor
Unit
P B
+ + 0 − 0
−
MASTER
Twisted
SLAVE
pair
+15
cable
1
5
6
2
Max. 1 m
Braking Unit 1
3 4
Cooling Fin Overheat Contact
(Thermoswitch Contact)
Master Unit
45
Braking Resistor
Overheat Contact
(Thermal Relay Trip Contact)
Braking
1 2
Resistor
Unit
P B
− + + 0 − 0
MASTER
Twisted
pair
SLAVE
cable
5
1
6
2
Max. 1 m
Braking Unit 2
3 4
Cooling Fin Overheat Contact
(Thermoswitch Contact)
Slave Unit 1
4 OPERATION
Braking Resistor
Overheat Contact
(Thermal Relay Trip Contact)
Braking
1 2
Resistor
Unit
P B
− + + 0 − 0
MASTER
SLAVE
1 5
2 6
Braking Unit 3
3 4
Cooling Fin Overheat Contact
(Thermoswitch Contact)
Slave Unit 2