Chapter 5 Electrical commissioning
Operating manual HE 5422 MR
19
Version 1.2
5.3
Connection diagram
Fig. 5.2: Connection Diagram
5.4
Inputs
The ΔP controller has 2 inputs: Start and Post cleaning. The inputs are internally supplied with +
24 V DC and are active when they are switched to ground (GND) with a potential-free contact.
5.5
Outputs
Relay
The device is equipped with 4 potential-free relay outputs.
The contacts can each be loaded with 250 VAC / 5 A.
Analogue output
The current differential pressure is reported by a galvanically isolated 4…20 mA signal.
Note!
The inputs refer to the same ground (-). It is permissible to use one ground wire
for both inputs.
