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17-4
17.4. Alarm Output Check
This check applies to the instrument with an alarm output function (option) only. Alarm outputs can be
checked by outputting either shorted (ON) or open (OFF) signal from specified alarm output terminals.
1. Check flow chart
<Example> Alarm output No. 3 check
Operation screen
[Engineering mode]
Check
Cursor
Longer
than 3sec
[Selecting check]
[To CHK1 display]
Cursor
Cursor
[Selecting alarm]
[To output number display]
Longer
than
2sec
( + )
[To CHK2 display]
Cursor
[Programming output
number]
[Selecting output condition]
Alarm
Communication
or
Reference 1
Reference 2
Cursor
Cursor
Output
number
Reference 3
Shorted
(ON)
Open
(OFF)
to
Cursor
*The above figure shows MOS relay
output and CE mechanical relay 'a'
contact output.
N.O
terminals
COM
terminals
Output numbers
Alarm output terminals
Output
Output
condition
N.O-COM
OFF Higher than 10M
Ω
MOS
relay
ON
Lower than 50
Ω
OFF Higher than 10M
Ω
Mechanical
relay
('a' and 'c'
contact
common)
ON
Lower than 0.1
Ω
Resistance value across terminals
Refer to the separate instruction manual
for [communications interface].
Communications interface
check.
Reference 2
The condition (OFF/ON) being selected
by or key is output.
Output condition
Reference 3
CHK1 and CHK2 are switched by
or key.
CHK2 can be selected only when options
(alarm remote contacts or
communications interface) are added.
CHKI and CHK2 display
selection
Reference 1
Содержание AL3000 SERIES
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Страница 116: ...32 8 KUMANO CHO ITABASHI KU TOKYO 173 8632 Telephone 81 3 3956 2171 Facsimile 81 3 3956 0915 Printed in Japan ...