FL20-C Series
123
Dc bus P
N
B1
B2
B3
N+
Built-in
braking resistor
Dc bus
Remove the wire between B2 and B3, and
connect resistor between B1 and B2.
P
N
B1
B2
B3
N+
Dc bus
Dc bus
Built-in
braking resistor
Fig 7-1-11 Wiring of braking resistor
Some servo drives have built-in braking resistor, if users need to use external braking resistor,
please set the following both parameters:
2008h-05h
Braking resistor value PP PV PT CSP CSV CST HM
Setting range
Setting unit
Mfr’s value
When enabled
8
~
1000
Ω
—
Immediate
Function code
Mapping
Data type
Accessibility
So-04
N
UINT16
RW
2008h-06h
Discharge duty ratio PP PV PT CSP CSV CST HM
Setting range
Setting unit
Mfr’s value
When enabled
0
~
100
%
50
Immediate
Function code
Mapping
Data type
Accessibility
So-05
N
UINT16
RW
Please refer to next table for built-in braking resistor and min resistor value of external braking
resistor for 220V servo.
Servo drive
structure code
Built-in resistor value
and power
Min resistor value of
external braking
resistor
Specification of
external braking
resistor
M1
None
40Ω
60Ω/200 W
M2
50W/50Ω
25Ω
40Ω/ 400 W
M3
100W/20Ω
15Ω
15Ω/ 1000 W
M4
260W/10Ω
10Ω
15Ω/ 2000 W