17
73VR2102 / 73VR2104 / 73VR2106 / 73VR2108 / 73VR2110 / 73VR2112 USERS MANUAL EM-7395-B Rev.24
2.4 TERMINAL WIRING
TERMINAL BLOCK
Connection: M3 screw terminal
Screw terminal material: Nickel-plated steel (torque 0.5 N·m)
Applicable wire size: 0.25 to 1.65 mm
2
(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
INPUT SIGNAL WIRES
1. Confirm that the power supply is turned off and open the input terminal cover.
2. Connect the wires to the terminal. Remove the CJC sensor(s) from Input 1 and Input 7 terminals when connecting
an RTD to them. If you want to mix thermocouple and RTD inputs, connect a thermocouple to Input 1 and Input
7 terminals.
3. Close the cover.
7A 7B 7C 9A 9B 9C 11A 11B 11C
8A 8B 8C 10A 10B 10C 12A 12B 12C
1A 1B 1C 3A 3B 3C 5A 5B 5C
2A 2B 2C 4A 4B 4C 6A 6B 6C
n
INPUT TERMINAL ASSIGNMENT
Terminals 1A, 1B, 1C :
Input 1
Terminals 2A, 2B, 2C :
Input 2
Terminals 3A, 3B, 3C :
Input 3
Terminals 4A, 4B, 4C :
Input 4
Terminals 5A, 5B, 5C :
Input 5
Terminals 6A, 6B, 6C :
Input 6
Terminals 7A, 7B, 7C :
Input 7
Terminals 8A, 8B, 8C :
Input 8
Terminals 9A, 9B, 9C :
Input 9
Terminals 10A, 10B, 10C : Input 10
Terminals 11A, 11B, 11C : Input 11
Terminals 12A, 12B, 12C : Input 12
C
B
A
ext. wire
+
–
+
–
C
B
A
C
B
A
ext. wire
–
+
–
+
C
B
A
+
–
A
B
B
n
DC INPUT
n
T/C INPUT
• Upscale / No Burnout
n
T/C INPUT
• Downscale Burnout
n
RTD INPUT
Input Connection Examples
Input Terminals
Input 1 thr. 6
Input Terminals
Input 7 thr. 12
Notes
Usable number of terminals depends upon the input
type designated by the model number.
Terminal blocks are separable. The top row one is for
Input 7 through 12, and the bottom row is for Input 1
through 6.
CAUTION !
The CJC sensor must be attached to the terminals 1A and 1C as shown below. For the 73VR2108,
73VR2110 and 73VR2112, connect one also to the terminals 7A and 7C.
1A
1B
1C
CJC Sensor
REAR Side
An RTD is attached on the REAR side of the
CJC sensor.
In order to measure accurate reference junction
temperature, be sure to set the FRONT side of
the sensor visible on top side of the terminal 1C.
FRONT Side
