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3-4
Section
$
Inductive Loads
When connecting an inductive load to an input, connect a surge protector or
diode in parallel with the load.
The surge protector’s components should have the following ratings:
OUT
COM
CPM2C
Surge protector
Relay Output
OUT
COM
CPM2C
Diode
Relay Output
Transistor Output
(Sinking)
OUT
COM
CPM2C
Diode
Relay Output
Transistor Output
(Sourcing)
The diode should satisfy the following requirements:
Peak reverse-breakdown voltage must be at least 3 times the load voltage.
Average rectified current must be 1 A.
Inrush Current Considerations
When switching a load with a high inrush current in the CPM2C relay output or
transistor output model, such as an incandescent lamp, suppress the inrush cur-
rent as shown below.
R
R
Countermeasure 1
Providing a dark current of
approx. one-third of the rated
value through an incandescent
lamp
Countermeasure 2
Providing a limiting resistor
OUT
COM
OUT
COM
Fuse Insertion
The CPM2C with transistor output may burn if the load is short-circuited, there-
fore, insert a protective fuse in series to the load.
Содержание CPM2C
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