YASKAWA CDBR-****D User & Installation Manual page 48

6 Electrical Installation
Connection Diagram
■
WARNING! Fire Hazard. Perform all dynamic braking option wiring as specified in the provided wiring
diagrams. Improper wiring could cause death or serious injury.
Figure 20
Wiring sequence should shut off
power to the drive when a CDBR
transistor short-circuit detection
output is triggered or when a
braking resistor unit overheat
switch is triggered.
ELCB (MCCB)
R
3-phase
S
T
MC MB THRX OFF ON
Braking resistor MC
overheat switch
(thermal relay trip)
1 2
MC MA
TRX
Fault relay contact
<1> Set L8-55 to 0 to disable the protection function for the internal braking transistor when using a regenerative unit
or another type of dynamic braking option in lieu of the internal braking transistor. Enabling the protection
function under these conditions may cause a braking resistor fault (rF). This is not available for Varispeed
G7-series.
<2> Set L3-04 to 0 to disable Stall Prevention when using a regenerative converter, a regenerative unit, or a dynamic
braking option. Enabling the function under these conditions may prevent the drive from stopping within the
specified deceleration time.
<3> Set L8-01 to 1 to enable braking resistor overload protection in the drive when using ERF-type resistors.
<4> Be sure to protect non-Yaskawa braking resistors by thermal overload relay.
<5> Refer to the manual packaged with the drive for details on wiring ends.
48 YASKAWA ELECTRIC TOBP C720600 01E YASKAWA AC Drive Option CDBR-D, LKEB- Installation Manual
MC
Main circuit
R/L 1
S/L 2
T/L 3
MC
SA
THRX
SA
TRX
SA
Figure 20 Connection Diagram
IN1 IN2
+
-
CDBR Braking Unit
MA MB MC
Fault output
250 Vac, max.1 A
30 Vdc, max.1 A
min.5 Vdc, 10 mA
(to customer circuit)
<5>
-
+3
U/T 1
V/T 2
W/T
Drive
LKEB Braking
Resistor Unit
<2><3><4>
OUT1 OUT2
B1 P
B2 B
Level
sensor
SC
SB
Braking resistor
overheat switch
<1><2>
(thermal relay trip)
(Ground)
EA EB EC
CDBR transistor
short-circuit
detection output
250 Vac, max.1 A
30 Vdc, max.1 A
min.5 Vdc, 10 mA
(to customer circuit)
U
V
M
W
3
(Ground)
1 2