Wecon VD2 SA Series Servo Drives Manual (Lite V1.1)
WECON technology Co., Ltd
4.4.3 Position instruction input signal
Low-speed pulse input modes: differential input, open
collector.
There are three types of input pulse:
1
Direction + pulse (positive logic)
2
CW/CCW
3
A and B phase quadrature pulses (4 times the
frequency).
External power input interface for instruction pulse.
Table 4-14 Position instruction signal description
The instruction pulse and sign output circuit on the host device side can be selected from
differential output or open collector output. The maximum input frequency is shown in the table.
(1) Differential input
Figure 4-13 VD2A and VD2B servo drive differential input connection