External Regenerative Resistors
Regenerative resistors for servo amplifiers are internally
or externally mounted, as shown in the following table.
They can be mounted externally on all servo amplifiers,
but are especially effective when regenerative energy
exceeds the servo amplifier’s capacity.
When mounted externally, be sure to remove the jumper
between B2 and B3, which deactivates the internal
Important: External regeneration resistor sizing and
amplifier set-up will be important for proper operation.
Applicable Servo Resistance (Ω) Wattage*(W)
SGDH-08AE-S 50 60 12
SGDH-15AE-S 25 140 28
SGDH-20AE 25 140 28 12
SGDH-50AE 8 280 56
SGDH-60AE 6.25 880
SGDH-1AAE 3.13 1760 350
Externally attach a regenerative resistor to the servopack. This resistor is used for dissipating
Use one of the following regenerative resistor units according to the servopack model.
Servopack Model SDGH- 2BDE 3ZDE 3GDE 4EDE 5EDE
Regenerative Resistor Unit JUSP- RA12 RA13 RA14 RA15 RA16
Resistance 9Ω 6.7Ω 5Ω 4Ω 3.8Ω
Resistance Capacity 3600W 3600W 4800W 6000W 7200W
Allowable Load Moment of Inertia 5 times the load moment of inertia at motor shaft.
Allowable Duty 2% ED at maximum speed and torque deceleration
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