Installation
1.5
Relay Module
L
D
AC/DC
Relay Module
Relay Module
AC/DC
L
L
R
C
R
C
RC Network
Transil / MOV
DC
Figure 1.6 – Filters for AC and DC loads
FUSE
7
8
Power Supply
24VDC
+
-
Inductive
Load
Clamping
Diode
Figure 1.7 – Protection Diode in Parallel to DC Load
- Inductive AC Load:
In
FRI303
it is recommended to insert snubber circuit in parallel to the
load and close to them. This will avoid the noise coupling in other cables that are in the
same conduit.
FRI303
Inductive
Load
Snubber
Circuit
Field
N L
110VAC
FUSE
7
8
Figure 1.8 – Snubber Circuit in parallel to the AC Load
Suggestion for the RC network components and the clamping diode
The maximum current of the clamping diode should be greater or equal to the load
maximum current, and the maximum tension should be 3-4 times greater than the circuit source in
24VDC and 8-10 times greater than the circuit source in 110VDC.
Summary of Contents for FRI303
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