beautypg.com

5 precautions for relay output modules, Precautions for dc output modules – Toshiba SX 2000 User Manual

Page 138

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

background image

3.5 Precautions for Relay Output Modules

3.5 Precautions for Relay Output Modules

(

1

)

(

2

)

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

1 21