Yokogawa PC-Based MX100 - Manual (Page 54)

2-9
IM MX100-01E
Installation and W
iring
3
2
1
4
5
Index
General Precautions When Wiring the Input/Output Signal Wires
WARNING
• To prevent the possibility of electric shock when wiring, confirm that the power
supply source and signal source are turned OFF. After making the connections,
secure the terminal cover and do not touch the terminals with your hands.
• For signal wires on which voltage exceeding 30 VAC/60 VDC is applied relative
to the ground potential or between signals, use reinforced (double) insulation
wires. For all other signal wires, use basic insulation wires. For the withstand
voltage of insulation wires, see the table below.
Applied Voltage (Vrms or VDC) Basic Insulation Double (Reinforced) Insulation
30 (60 VDC)-100 620 V rms 1000 V rms
101-150 840 V rms 1400 V rms
151-300 1390 V rms 2300 V rms
301-600 2210 V rms 3700 V rms
• To avoid electric shock when removing the terminal block and terminal plate for
wiring, be sure to attach the terminal block and terminal plate to the input/output
module before inputting or outputting signals. Electric shock or fire can result if
signals are applied to the terminals when the terminal block is removed from the
input/output modules.
• When wiring to screw terminals, use insulation coated crimp-on lugs on the
terminals (4 mm screws on the screw terminal block, and 3 mm screws on the
screw terminals and screw terminal plate). Use round crimp-on lugs that do not
come out when loose.
• To prevent fire, use signal wires with a temperature rating in the table below or
higher.
Module Type Temp. Rating
Screw terminal block 75°C
Universal input module, DCV/TC/DI input module,
four-wire RTD resistance input module, strain input module,
digital input module, and digital output module
80°C
Analog output module, PWM output module 85°C
CAUTION
• If a large pulling force is applied to the input/output signal wires connected to the
MX100, the terminal or signal wire may break. To prevent this from happening,
fix all the wiring cables to the installation panel.
• Wiring of the Strain Input Module (-NDI)
When connecting a bridge head, in order that the empty weight of the cable
does not exceed 5 kg, ensure that the cable does not hang down more than 1.5
m (the distance to the floor). If it does, secure the cable to the installation panel
or some other location.
• Do not apply a voltage exceeding the value indicated below to the input
terminals of the input module. The module may become damaged.
Module Type Max. Input Voltage
Max. Common Mode Voltage
Between Channels Input to Ground
Universal input
module
± 10 VDC: Voltage range of 1 VDC
or less, TC, RTD, and DI (contact)
-H04:
250 VACrms
(50/60 Hz)
-M10:
120 VACrms
(50/60 Hz)
600 VACrms
(50/60 Hz)
± 120 VDC: Voltage range of 2
VDC or more, and DI (LEVEL)
2.4 Connecting the Signal Wires