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4-5
Alarm output terminals
COM
N.O
N.C
4.5 Alarm Output Terminals
The following connections apply to the instrument with an alarm output function (option) only. There are
three kinds of alarm outputs available: (1) MOS relay 'c' contact output, (2) mechanical relay 'c' contact and
(3) mechanical relay 'a' contact output, which are shipped by the designated outputs. The mechanical relay 'c'
contact output does not conform to the international safety standards.
1. Alarm output terminals
The terminal arrangement depends upon the type of alarm output.
MOS relay and mechanical relay 'a' contact outputs
Mechanical relay 'c' contact output
*
The international safety standards do not conform.
2. Connections
Turn off the feed power source and buffer relay power supply before starting connections for the purpose of
preventing an electric shock accident.
(1) Connect cables to the load via a buffer relay.
(2) Mount a crimp style terminal with an insulation sleeve to the alarm output terminals before connections.
Example of MOS relay and mechanical relay 'a'
contact outputs
Example of mechanical relay 'c' contact outputs
: Contact protective element
(It is recommended to mount this element
on the ‘a’ side)
: Contact protective element
(It is recommended to mount this element on the ‘a’ side)
*
N.O terminal ----- Close relay contact when alarm is on.
N.C terminal ----- Open relay contact when alarm is on.
Connect a load of less than specified (See Remarks 1 and 2) to the alarm output terminals. A buffer relay
power supply is applied to the alarm output terminals after connections and an electric shock accident
occurs if you should touch these terminals. Mount a terminal cover without fail after connections.
An alarm output of this instrument may become defective due to wrong operation, failures, abnormal
inputs, or other troubles. Take a safety measure against an output failure before use as occasion
demands.
Alarm output terminals
N.O
COM
Load
Power supply
N.O
COM
a
b
This instrument
Buffer relay
Load
Buffer relay
Power supply
N.O
COM
N.C
a
b
This instrument
*
mark of alarm output terminals
Warning
Take a safety measure
Caution
Содержание AL3000 SERIES
Страница 1: ...INST No INE 270J AL3000 SERIES MULTI POINT TYPE HYBRID RECORDER ...
Страница 2: ......
Страница 25: ...MEMO ...
Страница 114: ...MEMO ...
Страница 115: ......
Страница 116: ...32 8 KUMANO CHO ITABASHI KU TOKYO 173 8632 Telephone 81 3 3956 2171 Facsimile 81 3 3956 0915 Printed in Japan ...