Sequence Chart Of Control Signals; Protection Functions - Leadshine Technology DM503 Specification And User Manual

10. 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). See
"Connector P1 Configurations" for more information.
b) t2: DIR must be ahead of PUL effective edge by 5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.

11. Protection Functions

To improve reliability, the driver incorporates some built-in protections features.
Time(s) of
Priority
Blink
1st 1
2
2nd
When above protections are active, the motor shaft will be free or the red LED blinks. Reset the driver by repowering it
to make it function properly after removing above problems.
Figure 11: Sequence chart of control signals
Sequence wave of red LED
10
DM503 Fully Digital Stepper Drive Manual V1.0
Description
Over-current protection activated when peak
current exceeds the limit.
Over-voltage protection activated when drive
working voltage is greater than 52VDC