Rockwell Automation 1746-XXXX SLC 500 Digital I/O Modules Installation Instructions - Manual (Page 7)

SLC 500 Digital I/O Modules 7
Publication 1746-IN027D-EN-P - December 2012
Installing Octal Labels
Fuse Protection and Blown Fuse Diagnostics
This section describes fusing characteristics for the following modules:
• 1746-OBP16
• 1746-OVP16
• 1746-OAP12
Fuse Protection (1746-OBP16 and 1746-OVP16 modules)
The fuse on the 1746-OBP16 and 1746-OVP16 modules (shown on Location of Jumpers and
Fuses for 1746-OBP16 and 1746-OVP16 Modules on page 9 ) provides short-circuit protection
for 13 mm
2
(16 AWG) or larger wiring to external loads. In the event of a short circuit on an
output channel, it is likely that the transistor associated with that channel will be damaged. In
this event, the module should be replaced or the load moved to a spare output channel.
The fuse does not provide overload protection. In the event of an overload on an output channel,
it is likely that the fuse will not blow and the transistor associated with that channel will be
damaged. To provide overload protection for your application, user-supplied fuses should be
installed externally and properly sized to match your individual load characteristics.
OCTAL
1746-xxxx (OCTAL)
Octal Door Label 1746-xxxx
Octal Filter Label
Upper retaining screw max torque
= 0.6 Nm (5.3 lb-in.)
Module Color Bar
Lower retaining screw max torque
= 0.6 Nm (5.3 lb-in.)
Removable
Terminal Block
Beveled Edge
Terminal Wiring
Max 2mm
2
(14 AWG)
Max 2 wires per terminal
Max torque: 0.9 Nm (8 lb-in.)