Yaskawa AC Drive-Option BRAKING UNIT-CDBR Spec.D User Manual
Page 66
9 CDBR Braking Unit and LKEB Braking Resistor Selection
66
YASKAWA ELECTRIC TOBP C720600 01C 1000-Series Option CDBR-D, LKEB- Installation Manual
◆
CDBR Braking Unit Fault Circuit Connection Diagrams
Note: When connecting a separately-installed type CDBR Braking Unit to drives with a built-in
braking transistor (200 V/400 V/600 V 30 kW or less), connect the B1 terminal of the drive to
the positive terminal of the CDBR Braking Unit and connect the negative terminal of the drive to
the negative terminal of the CDBR Braking Unit. The B2 terminal is not used in this example.
Figure 29
Figure 29 Fault Circuit Connection Diagram A (LKEB Braking Resistor Unit)
<1> 200 V class drives do not require a control circuit transformer.
<2> Set L3-04 to 0 or 3 to disable Stall Prevention During Deceleration when using an LKEB Braking Resistor Unit.
The motor may not stop within the deceleration time if this setting is not changed.
LKEB Braking
Resistor Unit
Braking resistor
overheat switch
(thermal relay trip)
Fault relay contact
(Ground)
Drive
Braking resistor
overheat switch
(thermal relay trip)
Wiring sequence should shut off power to the drive
when a CDBR transistorshort-circuit detection
output is triggered or a braking resistor unit
overheat switch is triggered.
ELCB (MCCB)
R
S
T
M
1
2
P
B
R/L1
MC
S/L2
T/L3
B1
B2
U/T1
V/T2
W/T3
SA
1
2
TRX
MC MA
TRX
SA
ON
OFF
THRX
MC
MC
SA
THRX
MC
MB
<2>
<1>
3-phase
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