Servo amplifier drives brush-type DC/PMDC motors


25A8 PWM servo amplifier

The 25A8 PWM servo amplifier is designed to drive brush-type DC and PMDC motors with and without tachometer feedback.

Power MOSFETS and surface-mount technology deliver up to 99 per cent efficiency with switching frequency to 22kHz.

The user simply provides an unregulated DC input voltage plus analogue command signal (up to +/-15V, 50K input resistance) and operation is immediate.

No set-up or tuning software is required.

The 25A8 is fully protected against over-voltage, over-current, over-heating and short circuits across motor, ground and power leads.

Model 25A8 provides 12.5A at 20-80V DC continuous output.

Features: surface-mount technology; small size fits into any shirt pocket; directional inhibit inputs (active high or active low); separate peak and continuous current limit adjustments; for quadrant regenerative operation with pulse width modulation; switch selectable modes for current, voltage, velocity and analogue position loop; full agency approvals.

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