EL3000 CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D 97
Digital I/O module
Terminal layout
Image 44: Electrical connections, digital I/O module
Digital inputs DI1 to DI4
Optocouplers with internal 24 V DC power supply. Control
system alternatively available with potential-free contacts, with
external voltage 12 to 24 V DC or with PNP or NPN open-collector
driver.
Digital outputs DO1 to DO4
Potential-free changeover contacts, maximum contact load
capacity 30 V/1 A.
Relays must at all times be operated within the specified data
range.
Inductive or capacitive loads are to be connected with suitable
protective measures (self-induction recuperation diodes for
inductive loads and series resistors for capacitive loads).
Relays are shown in the unpowered state.
The unpowered state corresponds to the state in the event of a
fault ("fail safe").
Version
2 × 12-pole plug-in terminal strip with mating connector
(included in the scope of delivery).
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