56 IM 04L41B01-02E
Power Supply Wiring
Panel Mount Type
Precautions to Be Taken While Wiring the Power Supply
This section explains the precautions to be taken on models whose rated supply voltage is
100 to 240 VAC. Make sure to follow the warnings below when wiring the power supply.
To prevent electric shock and damage to the DX, observe the following warnings.
WARNING
• To prevent electric shock when wiring, ensure the main power supply is turned OFF.
• To prevent the possibility of fire, use 600 V PVC insulated wire (AWG20-16) or
an equivalent wire for power wiring.
• Make sure to earth ground the protective earth terminal through a grounding
resistance less than 100 Ω before turning ON the power.
• Use crimp-on lug with insulation sleeves (for 4-mm screws) for power supply
wires and protective grounding wires.
• To prevent electric shock, make sure to close the transparent cover for the
power supply wires.
• Make sure to provide a power switch (double-pole type) on the power supply
line in order to separate the DX from the main power supply. Put an indication
on this switch as the breaker on the power supply line for the DX and indications
of ON and OFF. Switch specifications Steady-state current rating: 1 A or more.
Inrush current rating: 60 A or more. Complies with IEC60947-1, 3.
• Connect a fuse (between 2 A and 15 A) to the power line.
• Do not add a switch or fuse to the ground line.
Use a power supply that meets the following conditions:
Item Condition
Rated supply voltage 100 to 240 VAC
Allowable power supply voltage range 90 to 132/180 to 264 VAC
Rated power supply frequency 50/60 Hz
Allowable power supply frequency range 50/60 Hz ± 2%
Maximum power consumption 45 VA (100 V)/60 VA (240 V)
Note
Do not use a supply voltage in the range 132 to 180 VAC, as this may have adverse effects on
the measurement accuracy.
Wiring Procedure
1
. Turn OFF the power to the DX and open the transparent power terminal cover.
2
. Wire the power cord and the protective ground cord to the power supply
terminals. Use ring-tongue crimp-on lugs (designed for 4 mm screws).
Power cord
Functional ground terminal
Protective grounding cord
NL
AC~
60VA MAX50/60Hz
100-240V
Note
Do not wire the protective grounding
cord to the functional ground terminal.
3
. Replace the power terminal cover, and fasten it with screws.
Installation and Wiring
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