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4.4.7
Digital inputs
The main board is equipped with 3 digital inputs for the process control. They are
electrically isolated by optocouplers, each bipolar potential-free.
The interface can be configured by software.
Depending on the order, the hardware is factory-set to "passive" (order code "DE1") or
"active" (order code "DE2").
Specifications
Description
Data
Connection
Terminal, 6-pin
Number of inputs
3 (CH1, CH2, CH3)
Input supply voltage
Logic 0: 0
5 V DC or open
Logic 1: 10
28 V DC
Active: Internal 12 V DC power supply.
Passive: External power supply required.
Input current
≤11 mA @ 24 V DC
≤5 mA @ 12 V DC
Protection against incorrect polarity.
Potential isolation
Active:
Jointly supplied via potential-free voltage.
Passive:
Via optocoupler.
Cables
Screened
Connect cable screen (wire gauge max. 1.5 mm
2
) to the sleeve
of the cable gland.
Cable length
max. 50 m
4 Device installation
Transmitter in field housing PR 5230
EN-57
Minebea Intec