Filter
Top Products
15 - 75
15. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(4) Connection of the regenerative option
Make sure to supply 1-phase 200V and 400V respectively to the cooling fan. The cooling fan specifications
are as follows.
Table 15.3 Cooling fan
Item 200V class 400V class
Model MR-RB137 MR-RB139 MR-RB136-4 MR-RB138-4
Voltage Frequency 1-phase 198 to 242VAC, 50/60Hz 1-phase 380 to 480VAC, 50/60Hz
Power consumption [W] 20 (50Hz)/18 (60Hz) 20 (50Hz)/18 (60Hz)
The regenerative option generates heat of 100
higher than the ambient temperature. Fully consider heat
dissipation, installation position, used wires, etc. to place the option. For wiring, use flame-resistant wires or
make the wires flame-resistant and keep them away from the regenerative option. The G3 and G4 terminals act
as a thermal sensor. G3-G4 are opened when the regenerative option overheats abnormally.
Make sure to twist the wires for connection with the converter unit and connect the wires within the overall
distance of 5m.
(a) MR-RB139
MR-RB136-4
Regenerative
option
R1
Converter unit
P
1
P2
(Note 1)
Power factor improving
DC reactor (Option)
C
Servo motor
G4G3
PC
Cooling fan
(Note 2)
5m or less
(Note 3)
Power supply
(Note 4)
Servo motor
thermal relay
OHS1 OHS2
24VDC
RA
S1
Note 1. When using the power factor improving DC reactor, remove the short bar across P1-P2.
2. G3-G4 contact specifications
Maximum voltage: 120V AC/DC
Maximum current: 0.5V/4.8VDC
Maximum capacity: 2.4VA
3. For specifications of cooling fan power supply, refer to Table 15.3.
4. For MR-RB136-4, "R1" is "R400" and "S1" is "S400".