ROTRONIC PF4 - Manual (Page 25)

E-M-PF4-V1_00
Rotronic AG
Bassersdorf, Switzerland
Document Code Unit
PF4 Differential Pressure Transmitter:
Instruction Manual
Instruction Manual
Document Type
Page 25 of 54
Document Title
© 2014; Rotronic AG E-M-PF4-V1_00
Figure 14: Connection terminals on the board
Note:
Terminal K2-3 (protective ground) is connected with GND due to the closed solder jumper B5. To remove this
connection, open solder jumper B5.
Warning:
Before connecting the PF4 to an active Ethernet network, make sure it is configured correctly for IP
communication. Otherwise conflicts could disturb communication in the network.
Terminals Description
K2-1: V-
Power supply: 15…40 VDC (-) or
14…28 VAC
K2-2: V+
Power supply: 15…40 VDC (+) or
14…28 VAC
K2-3: Protective ground
K3-1: NC Normally closed – relay not energized
K3-2: COM Common – common contact
K3-3: NO Normally open – relay energized
K4-1: OUT1
Differential pressure analog output
(+)
K4-2: OUT2
Temperature / Humidity
analog output (+)
K4-3: GND
Ground (connected to other GND),
see note below
K4-4: GND Ground (connected to other GND)
Ethernet
(optional)