Just Motion Control iHSS86 Series, Руководство пользователя

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Sequence Chart of Control Signals
In order to avoid some fault operations and deviations, PUL, DIR
and ENA should abide by some rules, shown as following diagram:
Remark:
a. t1: ENA must be ahead of DIR by at least 5 s. Usually, ENA+ and
ENA- are NC (not connected).
b. t2: DIR must be ahead of PUL active edge by 6 s to ensure correct
direction;
c. t3: Pulse width not less than 2.5 s;
d. t4: Low level width not less than 2.5 s.