C
L E A R
P
A T H
M C / S D
U
S E R
M
A N U A L
R
E V
.
3 . 0 9
4 5
T
EKNIC
,
I
NC
. T
EL
.
(585)
784-7454
W
ARNING
:
I
NDUCTIVE
L
OADS AND
C
LEAR
P
ATH
I/O
When power is suddenly removed from an inductive load, the inductor is
left with residual stored energy that, if discharged into a circuit without
surge suppressing components, can weaken, damage, or destroy
susceptible components in the discharge path.
Therefore, if you connect an inductive load across a ClearPath Input, you
must also add a common diode (such as part number
1N4004)
to the
circuit to prevent the inductor's back EMF from destroying the ClearPath
input circuit. Note: when a diode is used in this manner it is often called a
flyback diode, snubber, suppression diode, or catch diode.
Information on the Web:
For more information search Wikipedia:
"
" for an article that explains how a circuit with an inductive
load across it can be damaged (and how a flyback diode can solve the
problem).
+24V
ClearPath Motor
Input A+
Input A -
Relay, Solenoid,
Valve, Coil, etc.
Flyback Diode
PN 1N4004
Add a diode as shown if you have an external inductive load across a ClearPath input