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Hitachi SRL Series Instruction Manual page 15

Oilfree scroll compressor
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Installation(continued)
Terminal
No.
Description
This signal is outputted when the
④ Operation Signal
operation is ON.
This signal is outputted when the
⑤ Error Signal
errors occur and the air compressor
cannot be restarted.
This signal is outputted when an alarm,
⑥ Alarm Signal
such as a maintenance alarm, occurs.
Caution Note: The "Customer Control Run mode ( ① )" and "Remote Operation mode ( ③ )" cannot be
used at the same time.
(#) Compressor Head Error
This unit has a back-up function that will allow the unit to continue operating even if one compressor
head breaks down. If there is an error on one compressor head, the error signal will come ON and the
operation of other compressor head(s) will continue.
● When carrying out the wiring connection for the terminal block, make sure to turn off the main
power supply.
Content
The output is a non-voltage signal. The load connected
should be 250VAC/30VDC, 5A or less and should use an
auxiliary relay of small load.
CAUTION
11
How to use

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