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User Manual - SMC124– 15.07.2015 – v.1.2
Page 5
Exemplary values of current efficiencies of used power supply:
Motor current [A]
Power supply [V]
1
2
3
12
1A
2A
3A
24
0,5A
1A
2A
36
0,4A
0,8A
1,5A
CAUTION!
Reverse polarity or exceeding maximal voltage supply can cause damage of the driver.
During operation with high voltage supply and large motor which operates dynamically (rapid
decreasing of its velocity), too small output capacitors or lack of them can damage the driver or
cause its incorrect operation.
2.4
Connection of the driver
Motor should be connect to the driver using 4-wire cable. To minimize noises it is recommended to
use twisted pair cable (A with /A, B with /B), for the best shielded. In case of unipolar motors (with 6
or 8 derivations) connection can be made serial or parallel.
Connection of 4 –wire motor
Example of connection of bipolar stepper motor
Serial connection of 8(6)-wires motor
Coiling connected serially to achieve higher maximal torque
of the motor decreasing of its dynamics.
Parallel connection of 8-wires motor
Coiling connected parallels to achieve higher maximal motor
velocity and better operational dynamics
Increased
maximal current/phase in relation to rated current
x1,4
(for example motor with current 2A, can be operated with
max. current 2,8A).
CAUTION!
Do not disconnect motor from the driver during its operation. It can cause damage of the driver.
2.5
Controlling inputs
All controlling inputs (CLK, DIR, ENABLE) are opt insulated. It operates with 5V (high state 3..6V). To
control from voltage level 24 V into a row with controlling signals insert resistors with value
1,5..2,2k.
Controlling signals should be connected according to scheme below:
