Yokogawa PC-Based MX100 - Manual (Page 56)

2-11
IM MX100-01E
Installation and W
iring
3
2
1
4
5
Index
Wiring Procedure
1. Turn OFF the power to the MX100.
2. Loosen the terminal cover attachment screw and lift up the terminal cover.
3. Connect the signal wires to the terminals.
4. Return the terminal cover to the original position and secure it with the screw.
The appropriate screw tightening torque is 0.6 N·m.
Input terminal (clamp terminal)
Terminal cover
For 4-CH, High-Speed Universal Input Module
Attachment screw for terminal cover
Wiring the Universal Input Module and DCV/TC/DI Input Module
• Thermocouple input
• DC voltage input/DI input (contact)
• RTD input
• DC current input
DC current input
Shunt resistor
Example: For 4 to 20 mA input,
shunt resistance values should
be 250 Ω ± 0.1%.
–
+
Lead wire resistance per wire of
10 Ω or less*. Make the resistance
of the three wires equal.
A
b
B
Compensation
lead
b
A
B
b
A
B
b
A
B
* In the case of Pt100 Ω.
5 Ω max for Pt50 Ω. 1 Ω max. for Cu10 Ω.
+
–
DC voltage
input b
A
B
Contact
or
A plate with clamp terminals for current with built-in
shunt resistance can be attached to the 10-CH,
Medium-Speed Universal Input Module.
Terminal type: Clamp, or screw (in the case of M3: -L30/H3)
Applicable wire size: For -H04, 0.2 to 2.5mm 2 (AWG24 to 12)
For -M10 and -L30 (clamp), 0.14 to 1.5mm 2 (AWG26 to 16)
Note
• On the 10-CH, Medium-Speed Universal Input module, RTD input terminals A and B are
isolated on each channel. Terminal b is shorted internally across all channels.
• Measurement using RTDs cannot be performed with the 30-CH, Medium-Speed DCV/TC/DI
Input Module.
• When the screw terminal plate (model 772080) is connected to the 10-CH, Medium-Speed
Universal Input Module, the terminal arrangement differs from that of clamped terminals, so
wire according to the markings on the terminal cover.
2.4 Connecting the Signal Wires