MH860 series hydraulic servo drive
Accessories
115
see section 4.6.5 Typical wiring examples of main circuit.
10.3 Braking resistor model selection and installation
1.
Mapping between drive models and braking resistor/unit specifications/models
Drive model
Braking resistor specifications
Braking unit model
Resistance
(Ω)
Power (W)
MH860-T018SF7
40
500
Built-in braking unit
MH860-T025SF7
40
500
MH860-T032SF7
40
500
MH860-T038SF7
40
500
MH860-T043SF7
20
500
MH860-T060SF7
MH860-T060SY7
20
500
MH860-T070SF7
20
500
MH860-T092SF7
MH860-T092SY7
10
2000
MH860-T115SF7
MH860-T115SY7
10
2000
MH860-T150SF7
MH860-T150SY7
5
4000 (two of
10Ω/2000kW, in
parallel
connection)
MH860-T180SF7
MH860-T170SY7
5
4000 (two of
10Ω/2000kW, in
parallel
connection)
MH860-T215SF7
15
4000 (two of
30Ω/2000kW, in
parallel
connection)
DBU100H-060-4
The 90kW and lower drive models have built-in braking units, while the 110kW and higher
models need to use external braking units. The drive does not have an internal braking
resistor, and it must connect to an external braking resistor assembly. The braking resistor
with higher power may be needed when the motor brakes frequently. In this situation, you can
order the braking resistor with small resistance but high power. The external braking resistor
must be installed in a well-ventilated area, away from combustible objects or non
heat-resistant parts.
When configuring the external braking resistor by yourself, you must ensure the resistance
value is at least equal to the specified value. Otherwise, drive damage may result.
2.
Braking resistor dimensions (mm)
The aluminum-housed braking resistors RXLG-500W-40R (for 018/025/032/038) and
JRXLG-500W-20RJ (for 043/060/070 drives) are as follows.