Rockwell-automation 1771-OFE/B Analog Output Module User Manual Manuel d'utilisateur Page 59

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Vue de la page 58
MAX
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of
Mod-
ule
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MAX
MIN
6-7
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4. Place the LAST STATE configuration jumpers (Figure 6.5) in the
MAX position (if they are not there already).
Figure 6.5
LAST STATE Configuration Jumpers in MAX Position
LAST STATE
5. Connect the voltmeter leads across the top two screws on the field
wiring arm (Channel 1). The top screw is positive, and the
second (lower) screw is negative.
6. Turn on the processor, I/O chassis, and the industrial terminal.
7. Place the processor in the TEST or PROG mode.
8. Output full scale (+20mA) either with write block transfer data or
by placing the LAST STATE configuration jumpers in the MAX
position.
9. Adjust R66 until the reading is +5V (20mA) +
2mV (Figure 6.6).
10.Output +4mA (1V - minimum scale) either with write block
transfer data or by placing the LAST STATE configuration
jumpers in the MIN position.
11. Adjust R67 until the reading is 3/4 the difference between 1V and
the initial minimum scale reading.
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