ROTRONIC HF65 - Manual (Page 20)

E-M-HF63_65-V1_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroFlex HF63/HF65 Humidity Temperature
Transmitters: User Guide
Document title
Page 20 of 34
© 2008; Rotronic AG E-M-HF63_65-V1_11
Note: Terminal K6-1 is not tied with GND. If so desired, this terminal can be tied with GND by closing solder
pad B2 on the PCB
Optional terminal block - Pt100 direct
Terminal block K7 is used only when the HF63 is
equipped with an additional Pt100 RTD installed on
the probe
Measuring humidity or temperature only
Operation of the HF63 does not require both current loops to be closed. When using the HF63 to measure
either humidity only or temperature only, close only the loop that is being used.
Using the ROTRONIC HW4 software, any unused output of the HF63 can be disabled.
6.4.2
HF656 and HF658: digital outputs only
WARNING: Connecting a device to an active Ethernet network can disrupt communications on the network.
Before connecting the HF6, make sure that it is properly configured for your network
Terminal block diagram
Note: Terminal K6-1 is not tied with GND. If so
desired, this terminal can be tied with GND by closing
solder pad B2 on the PCB
Terminals Description
K7-1 Pt100 direct - S
K7-2 Pt100 direct - AS
K7-3 Pt100 direct – AR
K7-4 Pt100 direct - R
Terminals Description
K6-1: -► General ground (see note)
K6-2: +
Power supply: 15…40 VDC (+)
or VAC - Phase
K6-3: - Power supply (-) or VAC - neutral