Operating Instructions

47 Siemens Industry, Inc.
Four-Wire Wye
Communication and Verification - Details
This section is intended to support the commissioning of the MD-xxHD meter by an
instrumentation technician. In many cases, the electrical installation is conducted
ahead of the availability of the RTU or was performed by a different installer. Often
the technician is working in concert with a remote programmer who is confirming the
connectivity with a remote host system. A Digital Multimeter (DMM) can be used to
confirm measurements at the board terminals, if necessary.
Once the meter is powered from line voltage, ONLY TOUCH WIITH
THE METER IF THE TOUCHSAF
TM
HIGH VOLTAGE COVER IS
INSTALLED. For multi-circuit meters, it is safe too touch the meter
(including the user buttons) with the top cover removed ONLY if the
TouchSaf
TM
high voltage cover is installed.
NOTE: The MD-12HD-P-D-N (mounting plate configuration) DOES
NOT have a TouchSaf
TM
High Voltage cover and should not be
touched while powered from high voltage.
Communications settings and real-time data values can be confirmed quickly using the LCD
interface if equipped. When significant setup modifications are anticipated, a computer interface
is recommended.