YASKAWA L1000A Technical Manual page 368

8.5 Installing Peripheral Devices
■ Installing a Braking Unit: CDBR Type
When using a CDBR braking unit or any other external braking transistor or a regenerative converter, disable the internal
braking transistor protection function by setting parameter L8-55 to 0.
To install a CDBR type braking unit, connect either the B1 terminal of the drive (CIMR-LU20008 through 20115,
40005 through 40060, and 50003 to 50041) or +3 terminal of the drive (units CIMR-LU20008 through
20145 and 20415, 40075 to 40605, and 50052 to 50200) to the positive terminal on the braking unit. Then,
wire the negative terminals on the drive and braking unit together. Terminal +2 is not used.
Connect the braking resistor to CDBR terminals +0 and -0.
Wire the thermal overload relay contact of the CDBR and the braking resistor in series, and connect this signal to a drive
digital input. Use this input to trigger a fault in the drive in case a CDBR or braking resistor overload occurs.
Disable dynamic braking transistor protection by setting L8-55 = 0.
Note: To install a CDBR type braking unit to the drive with built-in dynamic braking transistor (CIMR-LU20008 through 20115,
40005 through 40060, and 50003 to 50041), connect the drive's B1 terminal to the positive terminal on the braking unit.
Next wire the negative terminals on the drive and braking unit together. Terminal B2 is not used.
Figure 8.17
Figure 8.19 Connecting a Braking Unit (CDBR type) and Braking Resistor Unit
(CIMR-LU20145 to 20415, LU40075 to 40605, and 50099 to 50200)
368
Braking Unit
(CDBR type)
+ 3 +
Drive
−
−
3
Thermal
Trip Contact
Braking Resistor Unit
(LKEB type)
+ 0
P
− 0 B
4
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
1
Thermal Overload
Trip Contact
2
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