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MOONS’
MSSTAC6 Step Motor Drive User Manual
MOONS’
www.moons.com.cn
Encoder Feedback Options
Stall Detection continuously compares the actual motor position, as reported by the encoder, against
the theoretical motor position. If the motor strays so far out of position that it can produce no torque, a
position fault occurs. This includes a motor at rest being driven out of position by an external force.
Check the box below Stall Detection if the drive should fault when the motor stalls. This fault can be
reported by the Fault output and cleared by the Alarm Reset input (see I/O Dialog).
Stall Prevention can prevent many stalls before they occur. The MSSTAC6 achieves this by using the
encoder to monitor the lead angle of the motor, a measure of torque utilization. If the motion profile begins
to demand more torque than the motor can produce, the velocity is automatically reduced before the motor
stalls. To engage stall prevention, simply check the Stall Prevention box and enter the maximum torque
utilization allowed.
The drive may also be faulted if the motor cannot move at all after a set amount of time by checking the
Hard stop box and entering the time limit.
Hardware
Safety Instructions
Only qualified personnel are permitted to transport, assemble, commission, and maintain this
equipment. Properly qualified personnel are persons who are familiar with the transport, assembly,
installation, commissioning and operation of motors, and who have the appropriate qualifications for their
jobs. Qualified personnel must understand and observe the following standards and regulations:
IEC 364 resp. CENELEC HD 384 or DIN VDE 0100
IEC report 664 or DIN VDE 0110
National regulations for safety and accident prevention or VBG 4
To minimize the risk of potential safety problems, all applicable local and national codes regulating the
installation and operation of this equipment must be followed. These codes vary from area to area and
qualified personnel must determine which codes should be followed, and to verify that the equipment,
installation, and operation are in compliance with the latest revision of these codes.
Equipment damage or serious injury to personnel can result from the failure to follow all
applicable codes and standards. MOONS’ does not guarantee the products described in this
publication are suitable for your particular application, nor do they assume any responsibility for
the application design installation, or operation.
