Digital Stepper Drive DM320T
4
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Warning
Warning:
Don’t plug or unplug the P1 & P2 terminal block to avoid drive damage or injury when DM320T
is powered on.
3.3 LED Light Indication
There are two LED lights for DM320T. 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
DM320T. Different number of flashes indicates different protection type (read section 11 for detail).
4. Control Signal Connector (P1) Interface
The DM320T can accept differential and single-ended inputs (including open-collector and PNP output). The DM320T
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 (common-anode)
Figure 3: Connections to difference control signal
