Table of Contents
Advertisement
6.2 Power Supply Sharing
Multiple DMA860E drives can share one power supply to reduce cost, if that power supply has enough power capacity.
To avoid cross interference, connect each stepper drive directly to the shared power supply separately. To avoid cross
interference, DO NOT daisy-chain connect the power supply input pins of the Drivers. Instead connect them to power
supply separately.
6.3 Selecting Supply Voltage
The DMA860E is designed to operate within 18 - 80VAC or 24-110VDC voltage input. When selecting a power supply,
besides voltage from the power supply power line voltage fluctuation and back EMF voltage generated during motor
deceleration needs also to be taken into account. Please make sure leaving enough room for power line voltage
fluctuation and back-EMF voltage charge back.
Higher supply voltage can increase motor torque at higher speeds, thus helpful for avoiding losing steps. However,
higher voltage may cause bigger motor vibration at lower speed, and it may also cause over-voltage protection or even
drive damage. Therefore, it is suggested to choose only sufficiently high supply voltage for intended applications.
7. DIP Switch Configurations
This drive uses an 8-bit DIP switch to set microstep resolution, and motor operating current, as shown below:
7.1 Microstep Resolution Configurations
Microstep resolution is set by SW5, 6, 7, 8 of the DIP switches as shown in the following table:
Microstep
Steps/rev.(for 1.8°motor)
2
4
8
16
32
64
128
256
5
10
20
25
40
50
100
200
400
800
1600
3200
6400
12800
25600
51200
1000
2000
4000
5000
8000
10000
20000
40000
DMA860E Digital Stepper Drive User Manual
SW5
SW6
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
SW7
SW8
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Page | 7
Advertisement
Table of Contents
