Wiring HMDW110 with RDP100 remote display panel - HMD110 - HMD112 - HMS110 - HMS112 - HMW110 - HMW112 - TMD110 - TMW110

HMDW110 Quick Guide

Document code
M211692EN
Revision
D
Language
English
Product
HMD110
HMD112
HMS110
HMS112
HMW110
HMW112
TMD110
TMW110
Document type
User guide
Figure 1. HMDW110 wiring with RDP100 remote display panel

You must always connect the humidity measurement current loop (HUM, terminals 5 and 6) to power the transmitter. Connecting the temperature measurement current loop (terminals 7 and 8) is optional.

Connect the RDP100 remote display panel using terminals 1 ... 4. The HMDW110 series transmitter provides both power and data to the RDP100.

Terminals 1 ... 4 shall be used only for connecting the RDP100 (optional) when using the analog outputs. If the RDP100 is not used, terminals 1 ... 4 must be left unconnected. Otherwise the analog outputs may output incorrect readings.
The GND input of the RDP100 must be connected only to terminal 3 of the HMDW110 transmitter. It must not be connected to any local ground potential.
When using the RDP100 with HMDW110 series transmitters, do not connect the Extpwr jumper to the RDP100 component board.