
Shanghai AMP & MOONS’ Automation Co. Ltd.
No.168 Mingjia Road, Industrial Park North Minhang District,
Shanghai 201107, P.R. China
Tel: 86-21-52634688 Fax: 86-21-62968682
Service Center
+86-400-820-9661
Safety Instructions
• Only qualied personnel should assemble, install, operate, or maintain this equipment.
• Read all available documentation before assembly and operation.
• It is vital to ensure that all system components are connected to earth ground.
• This product contains electrostatically sensitive components that can be damaged by incorrect
handling.
Selection
Switches
Many operational
parameters of the
SRAC4 can be set or
changed by position
switches - either by
a single switch or a
combination of ON/
OFF settings of 2 or
more switches.
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
Running Current
Microstepping
SW9 SW10 SW11 SW12 SW13 SW14 SW15 SW16
Idle Current Anti Resonance
Step Input Mode
Step Input Signal Filter Self Test
Smoothing Filter
Microstepping - 4 switches for a total of 16 settings:
Microstep(step/rev) SW1 SW2 SW3 SW4
200 ON ON ON ON
400 OFF ON ON ON
800 ON OFF ON ON
1600 OFF OFF ON ON
3200 ON ON OFF ON
6400 OFF ON OFF ON
12800 ON OFF OFF ON
25600 OFF OFF OFF ON
1000 ON ON ON OFF
2000 OFF ON ON OFF
4000 ON OFF ON OFF
5000 OFF OFF ON OFF
8000 ON ON OFF OFF
10000 OFF ON OFF OFF
20000 ON OFF OFF OFF
25000 OFF OFF OFF OFF
Idle Current - 2 switches for a total of 4 settings:
Idle SW9 SW10
25% ON ON
50% OFF ON
70% ON OFF
90% OFF OFF
Step Input Mode (SW13) - OFF for Step and
Direction input, ON for CW/CCW input
Step Smoothing Filter (SW15) - ON to enable, OFF to
disable
Running current - 4 switches for a total of 16 settings:
Current(Peak) SW5 SW6 SW7 SW8
0.4A ON ON ON ON
0.8A OFF ON ON ON
1.2A ON OFF ON ON
1.6A OFF OFF ON ON
1.8A ON ON OFF ON
2.0A OFF ON OFF ON
2.2A ON OFF OFF ON
2.4A OFF OFF OFF ON
2.6A ON ON ON OFF
2.8A OFF ON ON OFF
3.0A ON OFF ON OFF
3.2A OFF OFF ON OFF
3.4A ON ON OFF OFF
3.6A OFF ON OFF OFF
3.8A ON OFF OFF OFF
4.0A OFF OFF OFF OFF
Anti-Resonance - 2 switches for a total of 4 settings:
Option SW11 SW12 Inertia
0 ON ON Low
High
1 OFF ON
2 ON OFF
3 OFF OFF
Step Input Signal Filter (SW14) - ON for 150 kHz,
OFF for 2 MHz
Self test (SW16) - ON for 2 rev CW/CCW .5 rps self
test, OFF for none