SainSmart 2M542 Operating Manual
2-Phase Stepping Motor Driver
2M542
OPERATING MANUAL
Rev. B
Table of contents
Introduction page 2
Specifications page 2
Timing chart page 3
Setting page 4
Current set page 4
Reduce current function page 4
Micro-Steps page 5
Connection page 6
Control signal page 6
Power supply and
Stepping-Motor connect page 8
Troubleshooting page 9
Dimensions page 10
2
Introduction
This product is a high-performance micro-stepping driver.
• Smooth driver
By using micro-stepping, this driver can achieved low-vibration and low-noise.
• Built-in overheat protection
A driver’s internal temperature in excess of 70˚C (158˚F) trigger overheat
protection, and the driver will stop working automatically.
• Adjustable operating current
A digital switch adjusts the level of motor current during operation.
• Bio-polar drive
By using bio-polar drive, this driver is powerful than uni-polar driver and only
needs four wires connected to the stepping motor.
• Automatic reduce current
In the stop state, the driver will reduce the current automatically to limit the heat
generated by the motor and driver.
Specifications
Min Typical Max
Supply Voltage (VDC) 24 36 50
Output Current (A
rms
) 1.0 - 4.2
Logical Input Current (mA) 7 10 16
Input Frequency (KHz) 0 - 200
Low-Active Required Time 2.5 - -
Operation
Environment
Ambient
temperature
0 to +65˚C (+32 to +149˚F) (non-freezing)
Humidity 80% or less (non-condensing)
Surrounding
atmosphere
No corrosive gas, dust, water or oil
Storage
Environment
Ambient
temperature
-10 to +80˚C (+14 to +176˚F) (non-freezing)
Humidity 80% or less (non-condensing)
Surrounding
atmosphere
No corrosive gas, dust, water or oil
Vibration 5.9 m/s2 or less
Mass 0.26 Kg
3
•
Timing chart
Power LED
Pulse input
ON
OFF
ON
OFF
About 2 sec
Pulse input
ON
OFF
DIR input
ON
OFF
> 2 usec
< 1 usec
< 1 usec> 5 usec
> 5 usec
< 1 usec
< 1 usec
ENA input
ON
OFF
Motor
Release
Excitation
About 10 usec
About 10 usec
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