RHINO MOTION CONTROLS
RMCS-1120
Hybrid Servo Driver with Modbus RTU communication
(Max. 50Vdc and 7A per phase)
http://www.rhinomc.com
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Hybrid AC Driver [RMCS-1120]
Key Features
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Smooth and quiet operation at all speeds and extremely low motor heating
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Industrial grade performance for an alternating current servo motor
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Field oriented control based low voltage servo loop
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Fully configurable position and velocity loop
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Input supply voltage from 12VDc to 50VDC
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Delivers up to 7amps of continuous current
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Selectable gear-ratio for encoder with counts from 4000 to 10000 per revolution
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PULSE, DIRECTION and ENABLE inputs with opto-isolated interface
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Short-circuit protection for the motor outputs, over-voltage and under-voltage protection
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LED indication for power and error states
Description
Thank you for purchasing RMCS-1120, Hybrid AC Driver. RMCS-1120 is Rhino Motion Controls
introductory hybrid low voltage AC drive designed for smooth and quiet operation without compromising
on torque and control at higher speeds. It has short-circuit protection for the motor outputs, over-voltage
and under-voltage protection and will survive accidental motor disconnects while powered-up.
The RMCS-1120 delivers a low-voltage servo performance using a field oriented control (FOC) current
loop for two-phase hybrid PMSM motors. It also provides a fully configurable position and velocity loop
with feed-forward variables to achieve close to zero lag in servo performance.
Two phase PMSM servo systems give an advantage of higher speed, faster response and very low motor
heating.
The RMCS-1120’s FOC control gains are calibrated on start-up based on motor characteristics and also
adjusted dynamically while the motor is in motion. This control algorithm makes it capable of achieving
better torque at higher speeds in comparison to comparable drives in its range.
The PULSE/STEP, DIRECTION and ENABLE inputs are optically isolated. Both inputs work with 2.5V, 3.3V
or 5V logic drive signals. The input drive current is 5mA at 2.5V so almost all logic family (74LS, 74HC,
etc.) can be used to drive these inputs.
The RMCS-1120 hybrid AC drive is warranted to be free of manufacturing defects for six months from the
date of purchase. Please see the section on service, support and warranty at the end of this document.
