2-7
TI545/TI555 System Manual
Pre-installation Guidelines
2.4 Guidelines for Fuses/Circuit Breakers
Use
the following guidelines for installing fuses/circuit breakers; see
Figure 2-4. The sizes and types of fuses/circuit breakers depend on the
specified power distribution requirement.
•
A circuit breaker before isolation transformer (isolation transformers
may not be required if your power distribution system does not have a
high level of noise).
•
A fuse after isolation transformer
.
•
An external fuse before each power supply
.
Input
Power Line
1
10/220 V
AC
P/S
(Line)
(Neutral)
(Ground)
Controller
Remote I/O Base
Isolation
Transformer
P/S
(Line)
(Neutral)
(Ground)
Optional
Grounds
Figure 2-4 Fuse/Circuit
Br
eaker Placement
NOTE:
In order to ensure a proper level of safety compliance, observe local
installation code practices and guidelines.
Fusing the
Contr
oller and
Remote I/O Base
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