EM415S Digital Stepper Drive User Manual
Motion Control Products Ltd.
Tel.: (+44) 01202 599922
8. Wiring Notes
⚫
In order to improve anti-interference performance of the drive, it is recommended to use twisted pair shield
cable.
⚫
To prevent noise incurred in PUL/DIR signal, pulse/direction signal wires and motor wires should not be tied up
together. It is better to separate them by at least 10 cm; otherwise the disturbing signals generated by motor will
easily disturb pulse direction signals, causing motor position error, system instability and other failures.
⚫
If only one power supply serves multiple EM415S drives, separately connecting the drives to the power supply is
recommended instead of daisy-chaining.
⚫
It is prohibited to pull and plug connector P3&P4 while the drive is powered ON, because there is high current
flowing through motor coils (even when motor is at standstill), which will cause extremely high back-EMF voltage
surge, which may damage the drive.
9.
Typical Connection
A complete stepping system should include stepping motor, stepping drive, power supply and controller (pulse
generator). A typical connection is shown as figure 12.
GND
A+
A-
+Vdc
1
5
6
Power &
Motor Connector
Controller
Control Signal
Connector
4
PUL+
1
DIR+
3
PUL-
DIR-
2
4
ENA+
5
ENA-
6
Step
Direction
Enable
Fault
5-24VDC
ALM+
1
2
ALM-
Status Signal
Connector
18-36VDC recommended,
leaving rooms for voltage fluctuation
and back EMF of the motor
2
3
B+
B-
Drive
Figure 12
Typical connection
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:
