5 precautions for relay output modules, Precautions for dc output modules – Toshiba SX 2000 User Manual
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3.5 Precautions for Relay Output Modules
3.5 Precautions for Relay Output Modules
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The relay output module (R0663, R0662S) needs external 24Vdc power
for driving relays. (For details, see 2.3 I/O module specification.)
Because the relay output module does not have a built-in fuse to protect
from overcurrent, install a fuse appropriate to the load current on the
external wire. If the protective fuse is not inserted, module patterns could
be burn out when a load is shorted.
R0663
I—^
' I \aj
Fuse
(3) The relay output module does not have a built-in surge absorption element.
To connect an inductive load, always install a surge absorption element in
parallel with the load. For details on selecting a surge absorption element,
see 3.3 (6) and 3.4 (2).
6F8C0926
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