Yokogawa DR240 - Manual (Page 3)

IM DR232-01E-9A 3/5
for IM DR232-01E 9th Edition
Page 3-23, 3-24, 3-25 “Wiring Strain Input Signal Lines (Strain Input Module)”
In the wiring diagrams of each gauge method, the wiring diagram for the bridge box used for
the DU500-14 has been changed to the following:
Bridge head
switch
Rg
ON
1 2 3 4 5
1
2
3
4
5
6
7
8
OFF
SW
Bridge head
(701955 or 701956)
• Single-gauge method
Bridge head
(701955 or 701956)
• Four-gauge method • Opposed-side two-gauge method
SW1
ON
SW2
ON
SW3
ON
SW4
ON
SW5
OFF
• Single-gauge three-wire method
Bridge head
switch
Rg
ON
1 2 3 4 5
1
2
3
4
5
6
7
8
OFF
SW
Bridge head
(701955 or 701956)
SW1
OFF
SW2
ON
SW3
ON
SW4
ON
SW5
OFF
Bridge head
(701955 or 701956)
• Adjacent-side two-gauge method
Bridge head
switch
Rg1
Rg2
ON
1 2 3 4 5
1
2
3
4
5
6
7
8
OFF
SW
SW1
OFF
SW2
ON
SW3
ON
SW4
ON
SW5
OFF
Bridge head
switch
Rg1
Rg2
ON
1 2 3 4 5
1
2
3
4
5
6
7
8
OFF
SW
Bridge head
(701955 or 701956)
SW1
ON
SW2
OFF
SW3
ON
SW4
ON
SW5
OFF
Bridge head
switch
Rg1
Rg2 Rg4
Rg3
ON
1 2 3 4 5
1
2
3
4
5
6
7
8
OFF
SW
SW1
OFF
SW2
OFF
SW3
OFF
SW4
ON
SW5
OFF
Page 3-26 “CAUTION”
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• The power monitor module is a product belonging to Installation (Over-voltage) Category CAT II (IEC61010-1,
CSA22.2 No.61010-1).
• The power monitor module is a product belonging to Measurement Category CAT II (IEC61010-1, CSA22.2
No.61010-1).
Page 3-31 “WARNING”
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• To prevent electric shock, do not touch the terminals after wiring.
• Furnish a switch (double-pole type) to separate the instrument from the main power supply in the power
supply line. In addition, make sure to indicate that the switch is a power control for the instrument on the
switch and the ON/OFF positions of the switch.
Switch Specifications
Steady-state current rating: 3 A or more, inrush current rating: 90 A or more
Use a switch complied with IEC60947-1, -3.
• Do not add a switch or fuse to the ground line.