Chapter II Installation and Wiring
33
(4) A freewheeling diode must be installed and the polarity must be correct; otherwise
the drive will be damaged.
If the host device is OC input:
Fig. 2-14 Digital Output Circuit (b)
Pulse (Position Command) Input Circuit
The position command pulse of the host device has two types: differential drive (line
drive) and open collector drive (single-end drive).
(1) The differential drive is a signal transmission mode that is not easy to be interfered
by noise and the highest input pulse frequency is 500 kHz;
(2) To accurately transmit the quantity of pulse, differential drive is recommended;
(3) Under the differential drive mode, AM26LS31 or line drive circuit with similar
functions should be used;
(4) If single-end drive mode is used, the highest frequency of the transmitted signal
pulse is 200 kHz.
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