4
ELECTRICAL CONNECTION INDICATOR M9
22
BW25
www.krohne.com
10/2008 • 4000432301 MA BW25 R01 en
Load for HART
TM
communication
The maximum load resistance is calculated as follows:
Configuration
The ESK can be configured via HART
TM
communication. DD (Device Descriptions) for AMS 6.x
and PDM 5.2 and a DTM (Device Type Manager) are available for configuration (download centre
at www.krohne.com
www.krohne.com
www.krohne.com
www.krohne.com).
The current level can be transmitted using the integral HART
TM
communications. Two limit
values can be monitored.
INFORMATION!
For HART
®
communication a load of at least 230 ohm is required.
DANGER!
Use a twisted two-core cable to prevent electrical interference from impeding the DC output
signal.
In some cases a shielded cable may be necessary. The cable shield may only be earthed
(grounded) at one place (on the power supply unit).
MA_BW25_R01_en_PRT.book Page 22 Thursday, October 30, 2008 3:49 PM
