9 CDBR Braking Unit and LKEB Braking Resistor Selection
YASKAWA ELECTRIC
TOBP C720600 01E YASKAWA AC Drive Option CDBR-
D, LKEB-
Installation Manual
63
Connect drive terminal B1 to the positive terminal on the CDBR Braking Unit. Connect the
negative drive terminal to the negative terminal on the CDBR Braking Unit when
connecting a separately-installed type CDBR Braking Unit to drives with a built-in braking
transistor. The B2 terminal is not used in this example.
Note:
Refer to the specific drive manual for details on the drive with built-in braking transistor.
Figure 29
Figure 29 Fault Circuit Connection Diagram B (CDBR Braking 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.
Enabling the function under these conditions may prevent the drive from stopping within the specified
deceleration time.
SC
SB
<2>
B
1
2
P
B1
B2
ELCB (MCCB)
R
T
S
MC
R/L
1
S/L
2
T/L
3
M
U/T
1
V/T
2
W/T
3
ON
OFF
THRX
SA
1
2
TRX
MC MA
MC
TRX
MC
SA
SA
THRX
MC
MB
<1>
IN1
IN2
OUT1 OUT2
(Ground)
(Ground)
Drive
Wiring sequence should shut off power to the
drive when a CDBR transistor short-circuit
detection output is triggered or a braking resistor
unit overheat switch is triggered.
Fault relay contact
Braking resistor
overheat switch
(thermal relay trip)
CDBR Braking Unit
LKEB Braking
Resistor Unit
Braking resistor
overheat switch
(thermal relay trip)
Level
sensor
3-phase
CDBR transistor
short-circuit
detection output
250 Vac, max.1 A
30 Vdc, max.1 A
min.5 Vdc, 10 mA
(to customer circuit)
Fault output
250 Vac, max.1 A
30 Vdc, max.1 A
min.5 Vdc, 10 mA
(to customer circuit)
MA MB MC
EA EB EC
+
-
+
-
+3
-
TOBP_C720600_01E_9_0_E.book 63 ページ ２０１７年８月２５日 金曜日 午後２時８分
