
59
n.0013
SI3=ON,
allow
the
forward
running
P5-23
/N-OT
n.0004
(default)
SI4=ON, prohibit the reverse
running
Range: 0000-0015
n.0014
SI4=ON,
allow
the
reverse
running
Note:
1. /P-OT, /N-OT can be changed to other terminal input via parameter P5-22 and P5-23.
2. The input terminals function cannot be the same. Please refer to chapter 5-12-1.
5-2-5. Power-off Brake (BK)
It is used when servo drive controls the vertical shaft. The function of power-off brake is the moveable
part will not shift when servo is OFF.
1.
Wiring Example
The ON/OFF circuit of brake includes sequence output signal /BK and brake power. The following
diagram shows a standard wiring example.
Note: (1) the working voltage of brake is DC 24V.
(2) In the above diagram, BK signal output from SO1, please set P5-44 to n.0011.
2.
Brake signal
Parameter Signal
Type
Default
Explanation
Modify
P5-44
/BK
Output n.0000
Need to distribute
Range 0000-0013
/BK signal can output from output terminal via setting parameter P5-44.
When set P5-44=0011, it means output from SO1 terminal.
+24V
BK-RY
L
N
U
V
W
PE
SO1
COM
U
V
W
PE
M
PG
CN2
BK
1
2
3
Servo drive
+24V
BK-RY
Power supply
Servo motor with brake
Power-off brake
Prevent the part
moving as gravity
when servo is OFF
Servo
motor
The brake built into the MS series servo motor
with brakes is a de-energization brake, which is
used only to hold and cannot be used for
braking.