E-m-hf5-v2_12 – ROTRONIC HF5 User Manual

Page 25

E-M-HF5-V2_12

Rotronic AG
Bassersdorf, Switzerland

Document code

Unit

HygroFlex HF5 Humidity Temperature
Transmitters: User Guide

Instruction Manual

Document Type

Page

25 of 36

Document title

Terminal block diagram (analog outputs and digital option)

RS-485
RS485 + USB
RS-485 + Ethernet

Note: If so desired, K2-3 and K2-4 can be tied with the protective ground by closing solder pad B2 on the PCB

USB or TCP/IP port: this port is optional

Measuring humidity or temperature only

Operation of the HF56 does not require both current loops to be closed. When using the HF56 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 HF56 can be disabled.

Terminals

Description

K6-1: -

►

Protective ground

K6-2

Power supply phase: 85 to 240
VAC

K1-3

Power supply neutral 85 to 240
VAC

Terminals

Description

K2-4: GND

Ground (tied with other GND)

K2-3: GND

Ground (tied with other GND)

K2-2: OUT2

Temperature output (+)

K2-1: OUT1

Relative humidity or dew point (+)

Terminals

Description

K3-4: D-

RS-485 Bi-directional TX- / RX -

K3-3: D+

RS-485 Bi-directional TX+ / RX +

K3-2: GND

Ground (tied with other GND)

K3-1

Not Used

USB

TCP/I