Terminal Block Wiring And Removal - Allen-Bradley SLC 500 1746-NR4 Installation Instructions Manual

Terminal Block Wiring and Removal

The RTD module contains an 18-position, removable terminal block. The
terminal pin-out is shown below.
ATTENTION: Disconnect power to the SLC before attempting
to install, remove, or wire the removable terminal wiring block.
!
To avoid cracking the removable terminal block, alternate the
removal of the terminal block release screws.
Terminal Wiring
Terminal screws accept a maximum of two #14 AWG (2 mm
terminal screws only tight enough to immobilize wires. Maximum torque on
terminal screws is 0.7 - 0.9 Nm (6 - 8 in-lb.).
(Terminal Block Spare Part Catalog Number 1746-RT25G)
Channel 0 RTD
Channel 0 Sense
Channel 0 Return
Channel 2 RTD
Channel 2 Sense
Channel 2 Return
Release Screw
Max Torque = 0.7 - 0.9 Nm
Terminal Block Removal
If the terminal block is removed, use the write-on label located on the side of the
terminal block to identify the module location and type.
To remove the terminal block:
1. Loosen the two terminal block release screws.
SLC 500™ RTD/Resistance Input Module
Shield
Shield
Shield
(6 - 8 in-lbs)
2
) wires. Tighten
Release Screw
Max. Torque = 0.7 - 0.9 Nm
(6 - 8 in-lbs)
Shield
Channel 1 RTD
Channel 1 Sense
Channel 1 Return
Shield
Channel 3 RTD
Channel 3 Sense
Channel 3 Return
Shield
Publication 1746-5.17
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