3-14
IM 2553A-01EN
Wiring to the External RJ Sensor Input Terminal
To wire an external reference junction (RJ) sensor to the external RJ sensor input terminal on the rear
panel of the 2553A, follow the procedure below.
Wiring an RJ Sensor to the Terminal Plug
1.
Loosen the screws on the top of the terminal plug (these screws are used to fix lead wires in
place), and insert stripped lead wires into the lead wire connection terminals.
Insert white lead wires into the white positions of the terminal plug and red lead wires into the red positions.
• Length of stripped wire:
7 mm
• Conductive cross-sectional area Single wire:
0.14 mm
2
to 1.5 mm
2
Twisted wire:
0.14 mm
2
to 1.5 mm
2
AWG:
28 to 16
2.
Tighten the screws to fix the lead wires in place.
Screw tightening torque: 0.22 N•m to 0.25 N•m
Lead wire
White Red
Ground (GND)
White
Red
No connection
(NC)
Terminal plug screw
Terminal plug
Lead wire
connection
terminal
Lead wire screw Top
Bottom
Terminal plug pinout
Connect the lead wires to the appropriate terminals according
to the three-wire system or four-wire system of the RJ sensor.
3-wire
4-wire
Attaching the Terminal Plug to the External RJ Sensor Input
Terminal
3.
Attach the terminal plug with the RJ sensor to the external RJ sensor input terminal of the
2553A.
The terminal plug cannot be attached upside down. Attach the terminal plug in the proper orientation.
4.
Tighten the screws on the left and right of the terminal plug to secure the terminal plug to the
2553A.
Screw tightening torque: 0.2 N•m to 0.3 N•m
3.6 Connecting Wires
