Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules - Manual (Page 28)

28 Rockwell Automation Publication 1756-UM533C-EN-P - February 2011
Chapter 2 Module Installation
Removal and Insertion
Under Power (RIUP)
Before You Begin
Module Accessories These modules mount in a ControlLogix chassis and use a separately-ordered
removable terminal block (RTB) or a 1492 interface module (IFM) to connect all
field-side wiring.
The ControlLogix HART analog modules use one of the following RTBs and
support these IFMs.
WARNING: When you insert or remove the module while backplane
power is on, an electrical arc can occur. This could cause an explosion in
hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to contacts on
both the module and its mating connector. Worn contacts may create
electrical resistance that can affect module operation.
ATTENTION: This equipment is not resistant to sunlight or other sources
of UV radiation.
IMPORTANT Before you install your module, you should have already:
•
Installed and grounded a 1756 chassis and power supply.
•
Ordered and received a removable terminal block (RTB) or
1492 interface module (IFM) and its components for your application.
Module RTBs (1)
(1) Use an extended-depth cover (1756-TBE) for applications with heavy gauge wiring or requiring additional
routing space.
IFMs (2)
(2) See the IFMs for the respective modules on page 192 . Consult the documentation that came with it to connect
all wiring.
1756-IF8H • 1756-TBCH 36-position cage clamp RTB
• 1756-TBS6H 36-position spring clamp RTB • 1492-ACABLExUD (current)
• 1492-ACABLExUC (voltage)
1756-IF16H • 1756-TBCH 36-position cage clamp RTB
• 1756-TBS6H 36-position spring clamp RTB • 1492-ACABLExUB
1756-OF8H • 1756-TBNH 20-position NEMA RTB
• 1756-TBSH 20-position spring clamp RTB • 1492-ACABLExWB (current)
• 1492-ACABLExWA (voltage)
ATTENTION: The ControlLogix system has been agency certified using only
the ControlLogix RTBs (catalog numbers 1756-TBCH and 1756-TBS6H). Any
application that requires agency certification of the ControlLogix system
using other wiring termination methods may require application specific
approval by the certifying agency.