Manual for MVK-MPNIO Modules
12 V 1.9
Interference Suppression of Inductive Loads
The outputs of the devices described in this manual have an integrated protective circuit that
provides safety against high-energy interference voltages, such as those that occur when induc-
tive consumers are switched.
A
suppressor diode helps to quickly reduce the energy stored in the inductive load of a magnet-
ic field. Contrary to varistors, suppression with suppressor diodes offers two important ad-
vantages:
N
o aging
Very fast response
T
he high voltages that occur when inductive loads are shut down result in strong fields in the
cables with consequential faults in adjacent circuits or devices. Therefore we recommend for
large distances between module output and load or for possible other reasons, an additional
suppression of the inductive load. This causes the voltage spike generated by the inductive load
to be short-circuited at the source.
Murrelektronik offers a wide selection of interference suppression compo-
nents.
Bipolar suppressor diode
Inductive load
(e.g. solenoid valve)
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