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MOONS’
SR4/SR8 Stepping Motor Drive User Manual
www.moons.com.cn
5.1 Running Current
SR Drive set the output current by the SW1, SW2, and SW3. There are 8 setting. The current
value can be changed to meet the customers’ needs.
SR4
Peak SW1 SW2 SW3
1A ON ON
ON
1.5A OFF ON ON
2A ON OFF ON
2.5A OFF OFF ON
3A ON ON OFF
3.5A OFF ON OFF
4A ON OFF OFF
4.5A OFF OFF OFF
SR8
Peak SW1 SW2 SW3
2.4A ON ON
ON
3.2A OFF ON ON
4A ON OFF ON
4.8A OFF OFF ON
5.6A ON ON OFF
6.4A OFF ON OFF
7A ON OFF OFF
7.8A OFF OFF OFF
5.2 Idle Current
Your drive is equipped with a feature that automatically reduces the motor running current
by 50% anytime the motor needn’t moving. This feature can be disabled if desired so that
90% running current is maintained
when motor need not move. This is useful when a high
holding torque is required. To minimize motor and drive heating we highly recommend that
you enable the idle current reduction feature unless your application strictly forbids it.
5.3 Microstepping
SR Drive set the Microstep resolution by the SW5, SW6 and SW7.There are 8 setting.
Microstep(step/rev) SW1 SW2 SW3
400 ON ON ON
800 OFF ON ON
1600 ON OFF ON
3200 OFF OFF ON
6400 ON ON OFF
12800 OFF ON OFF
25600 ON OFF OFF
51200 OFF OFF OFF
5.4 self test
Setting the SW8 to “ON” after the drive is powered up, will cause the drive to perform a “Self
Test” of 2 rev move both CW and CCW at 1rps.
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