Servo amplifiers are 4-quadrant, regenerative power amplifiers, supplying appropriate power to the motor as commanded by a control voltage. These amplifiers are capable of suppling energy to the load, as well as absorbing energy from the load. They are designed to convert the kinetic energy of the combined motor load, into electrical energy while the load is decelerating.
The GMRT servo amplifier is a three phase, half wave, four-quadrant, fully regenerative, SCR CLA for the control of permanent magnet DC brush type motors. A CLA is a device, which keeps the current through the motor proportional to a commanded input signal.
| Type | 3-Phase, SCR based, 4-quadrant fully regenerative. |
| Control Type | Phase angle control with current loop. |
| Input Volts | 275VAC L-L, 50 Hz, 3-Phase, 4-wire. |
| Command Volts | +/- 10 Volt. |
| Maximum Current | +/- 80 Amp. |
| Protection | Over current & over speed. |