RGM User Manual | 3 Power Supply Voltage & Current Ratings
3 Power Supply Voltage & Current Ratings
RGM requires 48 VDC nominal supply voltage (44 VDC minimum, 52 VDC maximum). The RGM drive will
experience an Overvoltage fault at 55VDC. Kollmorgen recommends that an electrolytic capacitor with at
least 15,000 microfarads capacitance be installed between the DC power supply and the first joint. It is also
recommended that the power supply be capable of handling a regenerative load (i.e., a regen resistor in the
supply is turned on if the DC bus exceeds 52VDC). As a reference, for a 6 axis (6 DOF) robot, a switching DC
supply with approximately 12 Amps (600W) capacity is suggested.
Although the table below shows currents that individual joint may draw momentarily, not all joints will draw
these values simultaneously during typical robot motions. Therefore, it is not necessary to add all values in
the table. Kollmorgen testing has shown that a 12A supply should be sufficient.
Model
VDC
Is Amps
RGM 14 48 +/-10% 3.80
RGM 17 48 +/-10% 4.88
RGM 20 48 +/-10% 7.50
RGM 25 48 +/-10% 10.0
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Kollmorgen | kdn.Kollmorgen.com | February 2019