DMA860E Digital Stepper Drive User Manual
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3.3 LED Light Indication
There are two LED lights for DMA860E. The GREEN one is the power indicator which will be always on generally.
The RED one is a protection indicator which will flash 1-2 times in a 3-second period, when protection enabled for a
DMA860E. Different number of flashes indicates different protection type (read section 11 for detail).
3.4 Internal Jumpers J1 & J2 &J3
There are three jumpers J1, J2 and J3 inside the DMA860E for selecting activated edge of pulse, motor rotation
direction and control signal mode. Default setting is PUL/DIR mode, default rotation direction and rising edge.
Jumper
Open Circuit
Short Circuit
J1
Activated at falling edge
Activated at rising edge
J2
Default rotation direction
Reverse rotation direction
J3
PUL/DIR (single pulse)
CW&CCW (double pulses)
4. Control Signal Connector (P1) Interface
The DMA860E can accept differential and single-ended inputs (including open-collector and PNP output). The
DMA860E has 3 optically isolated logic inputs which are located on connector P1 to accept line drive control signals.
These inputs are isolated to minimize or eliminate electrical noises coupled with the drive control signals. Recommend
using line drive control signals to increase noise immunity for the drive in interference environments. In the following
figures, connections to open-collector and PNP signals are illustrated.
Figure 2: Connections to open-collector signal
Figure 3: Connections to PNP signal
(common-anode)
(common-cathode)
5. Motor Connection
The DMA860E can drive 2-phase and 4-pahse bipolar hybrid stepper motors with 4, 6, or 8 wires.
5.1 Connections of 4-lead Motor
The 4 lead motors are the least flexible and easy to connect. And the Speed – torque of motor depends on winding
inductance. The output current from drive that is multiply the specified phase current by 1.4 to determine the peak
output current.
Drive
Controller
VCC
PUL-
PUL+
ENA-
PUL
DIR
ENABLE
DIR-
DIR+
ENA+
Drive
Controller
VCC
PUL-
PUL+
ENA-
PUL
DIR
ENABLE
DIR-
DIR+
ENA+
