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Specifications subject to change without notice.
Owner's Guide: 3P20M Hybrid Stepper Motor Driver
Page 6
TECHNICAL DOCUMENT
Selecting CW/CCW or PUL/DIR Mode
There is a jumper J1 (including pin 1 to pin 9) inside the 3P20M specifically for selecting pulse signal mode. Settings for the one-pulse mode
(PUL/DIR) and for the double-pulse mode (CW/CCW) are shown in the following figure. Default mode out of factory is PUL/DIR mode and effective
at rising edge.
Notes: For (c), the user should move R137 (a 0
Ω
resistor)
to R136 besides setting J1, and let R137 NC (open circuit).
Connector P2 Configurations
Pin Function
Details
GND
DC power ground
VDC
DC power supply, +20VDC
－
+50VDC, Including voltage fluctuation and
EMF voltage.
U
Motor phase U
V
Motor phase V
W
Motor phase W
Remark: Please note that motion direction is also related to motor-driver wiring matches.
Exchanging the connections of two phases to the driver will reverse motor motion direction.
(a) PUL/DIR mode and effective at rising edge
(b) PUL/DIR mode and effective at falling edge
(c) CW/CCW mode and effective when the
opto-coupler of the fixed level in conducting state
(d) CW/CCW mode and effective when the
opto-coupler of the fixed level in off state
