Aviosys 9212 Delux - Manual (Page 9)

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You can setup the Dry/Wet contact in the left blue switch:
Switch Set on Off = Wet
Switch Set on On = Dry
Default Settings (when no device attached):
Wet Contact: 1-4 = LED Off
Dry Contact: 5-8 = LED on
Note:
* When a wet contact device is attached to output set to wet the LED will turn off.
* When a dry contact device is attached to output set to dry the LED will turn on.
4-2 . Connection Illustration:
For different request of normal state of electric equipment, 9201 Input offers four sets of voltage
signal IN1-IN4 and four sets of shortcut circuit signals IN5-IN8.
9201 Input Pro provide 4 set Source mode - Voltage Input – Out 1 ~ Out 4
ON : 4V~24V
OFF : 0V ~ 3V
4 set Sink mode - Resistance input – Out 5 ~ Out 8.
OFF: 200 ohm~ 0 ohm
ON: 500 ohm ~
∞
∞→LED(ON)→IE(ON)
0Ω→LED(OFF)→IE(OFF)