2-21
IM MW100-01E
Installation and Wiring
2
Wiring the Power Supply Terminal (Power Supply/Cord Basic Specification Code -1W)
WARNING
• Furnish a switch (double-pole type) to separate the unit from the main power
supply in the power supply line. Also, include an ON/OFF indicator with the
switch as well as a display that acts as a power supply shut down for the
instrument.
Switch specifications
Steady state current rating: 3 A or more
Inrush current rating: 100 A or more
Conforms with IEC60947-1 and -3
• Connect a fuse of 2 A to 15 A to the power supply line.
• Do not insert a switch or fuse on the ground line.
Use a power supply that meets the conditions indicated below.
Item Specifications
Rated supply voltage 100-240 VACrms
Supply voltage range used AC power supply, 90 to 250 VACrms
Rated supply voltage frequency 50/60 Hz
Allowable line frequency range 50/60 Hz ±2%
Maximum power consumption Up to approximately 70 VA maximum when six modules are
used
Note
Do not use a supply voltage in the range 132 to 180 VAC, as this may have adverse effects on
the measurement accuracy.
1.
Check that the power supply and the power switch of the main module is OFF.
2.
Loosen the screw fixing the power supply terminal cover of the main module in
place and open the power supply terminal cover.
3.
Connect the power cord and the protective ground cord to the power supply
terminals according to the figure below.
Use round crimp-on lugs with isolation sleeves (for 4 mm screws) for the power
cord and protective ground cord terminals.
4.
Close the power supply terminal cover and secure it with the screw.
DATA ACQUISITION UNIT
100 - 240V AC
Power cord
Power cord
Protective grounding cord
Protective
grounding cord
Power supply
terminal cover
100 - 240V AC
L N
2.5 Connecting the Power Supply and Turning the Power Switch ON and OFF
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