C
LEAR
P
ATH
-SC
U
SER
M
ANUAL
R
EV
.
1.36
14
T
EKNIC
,
I
NC
. T
EL
.
(585)
784-7454
4.
T
EST THE
DC
B
US
P
OWER
P
OLARITY
Before applying DC bus power to your motor, please perform this quick
test. It is well worth the few minutes it takes, and may save you significant
amounts of time, money, and frustration.
IMPORTANT: Reversing DC Bus polarity will permanently damage your
ClearPath-SC motors.
1. Start with the 4-pin power connector disconnected from your
ClearPath-SC motor and the AC unplugged.
2. Power up your DC Bus Power Supply.
3. With a DMM, measure the voltage from V+ to GND. See diagram
below for pin locations. You should measure a positive value of
DC voltage. (The actual voltage measured depends on your
supply.) If you measure a negative value, the polarity is
reversed. Fix the problem and measure again.
4. Remove power from your supply.
5. Reconnect the 4-pin power connector to your ClearPath-SC motor
and power up.
IMPORTANT: CHECK DC BUS VOLTAGE POLARITY!
POWER CONNECTOR
Front view
GND
GND
V+
V+
GND
V+
GND
V+
POWER CONNECTOR
Wire entry view
2
4
2
4
1
3
1
3
VDC
Clearpath operating
voltage range: 24-75VDC
Testing polarity of DC Bus
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