User's Manual

Chapter 3
Hardware MQA
3.1 Operational description
3.1.1 MQA
Sirius MQA is a compact servo driver. It can operate in position, speed or torque control mode, driving
brushless DC or AC motors, stepper or brushed DC motors.
It can be used in network or stand alone environments. Standard feedback is provided by Hall sensors
and incremental encoders. It can be configured, tested and be driven from a PC via serial TTL
connection.
Our drivers communicate using CANOpen protocol and up to 127 drivers can be hooked up to the
master in a CAN network. As a CAN node it can operate in position profile mode, speed mode and
torque mode.
MOH can operate in conjunction with an external positioner in torque, speed or posizion mode.
Speed reference input operates from 0 to 5 volts.
Sirius MQA has the same characteristics of the MOH series but has an Ethernet communication inter-
face on which it is possible to use the CANopen protocol.
Two different hardware configurations are available.
MQA is mechanically compatible with the MOH series, with which it shares the pitch of the mounting
holes and the dimensions of the printed circuit board.
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