User's Manual

Digital Servo Drivers
3.3 Configurations
MQA-C MQA-D U.M.
CAN -
ETHERNET
√ √
MAXIMUM CURRENT 10 20 A
NOMINAL CURRENT 5 10 A
VDC 20-55 20-55 V
3.4 Specifications
3.4.1 Output power
MQA-C MQA-D U.M.
Peak current * 10 20 A
Constant current 5 10 A
Peak power * 480 960 W
* these limits are due to Molex Microfit connectors
3.4.2 Input power
MQA-C MQA-D U.M.
Input voltage 20-55 20-55 V
Peak current 10 20 A
Constant current 5 10 A
3.4.3 Digital control
MQA-C,D
Control loops Current, speed, position. 100% digital control loops
Sampling frequency Speed and current loops at 20 kHz (50us), position loop 1kHz (1ms),
stepper/brush DC 40kHz
Commutation FOC (field-oriented control) sinusoidal, step/microstepping
Modulation Center-weighted PWM with space-vector modulation, full bridge
Minimum load
inductance
200 uH line-line
Sirius Electronic Systems s.r.l. 25