Yokogawa PC-Based MX100 - Manual (Page 5)

5 IM MX100-72E
Attaching the Terminal Cover
1. Loosen the terminal cover attachment screw, then flip up the terminal cover in the direction of the arrow as shown in the figure.
2. Loosen the terminal block screw, then remove the terminal block.
3. Attach the screw terminal plate or the plate with clamp terminals for current, and fasten with screws.
4. Attach the terminal cover that came with the plate with screw terminals or plate with clamp terminals for current.
• Example of attaching the plate with screw terminals.
Terminal cover (standard accessory)
Plate with screw terminals
(fasten with screw)
Terminal cover that
comes with the plate
with screw terminals.
Plate with clamp terminals
(standard accessory)
Terminal cover attachment screw
Push back firmly
Attachment screw
(loosed before pulling off the terminal plate)
1.
2.
3.
4.
Note
The plate with screw terminals is recognized by the PC software as a clamp terminal. The terminal arrangement of the
plate with screw terminals differs from that of the clamp terminal. Follow the terminal arrangement markings on the
terminal cover when wiring.
5. Wiring Procedure
1. Turn OFF the power to the MX100/MW100.
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
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,
shut resistance values should be
250 Ω ±0.1%.
A plate with clamp terminals for current with
built-in shunt resistance can be attached to the
10-CH, Medium-speed Universal Input Module.
–
+
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
+
–
DC voltage
input
b
A
B
Contact
or
Terminal type: Clamp, or screw (in the case of M3: -L30/H3)
Applicable wire size: -H04: 0.2 to 2.5 mm
2 (AWG24 to 12)
-M10 and -L30 (clamp): 0.14 to 1.5 mm 2 (AWG26 to 16)
* In the case of Pt100 Ω.
5 Ω max for Pt50 Ω.
1 Ω max. for Cu10 Ω.
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 RTD cannot be performed with the 30-CH, Medium Speed DCV/TC/DI Input Module.
• When the plate with screw terminal (model 772080) is connected to the 10-CH, Medium-Speed Universal Input
Module, the terminal arrangement differs from that of clamp terminals, so wire according to the markings on the
terminal cover.
4. Attaching and Removing the Terminal Block / 5. Wiring Procedure