GE Power Quality Meter Series, Инструкция по эксплуатации

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GE Power Management PQM Power Quality Meter 4-1
4 PROGRAMMING 4.1 INTRODUCTION
4
4 PROGRAMMING 4.1 INTRODUCTION 4.1.1 SETPOINT ENTRY METHODS
Prior to operating the PQM, it is necessary to enter setpoints defining system characteristics and alarm set-
tings via one of the following methods:
1. Front panel, using the keys and display.
2. Rear terminal RS485 port COM1 or COM2, or front RS232 port and a computer running the PQMPC com-
munication program available from GE Power Management or from a SCADA system running user-written
software.
Any of the above methods can be used to enter the same information. However, a computer makes entry con-
siderably easier. Moreover, a computer allows setpoint files to be stored and downloaded for fast, error-free
entry. To facilitate this process, the PQMPC programming software is available from GE Power Management.
With this software installed on a portable computer, all setpoints can be downloaded to the PQM. Refer to
Chapter 6 for additional details.
Setpoint messages are organized into logical groups or pages for easy reference. Messages may vary some-
what from those illustrated because of installed options. Also, some messages associated with disabled fea-
tures are hidden. This context sensitive operation eliminates confusing detail. Before accurate monitoring can
begin, the setpoints on each page should be worked through, entering values either by local keypad or com-
puter.
The PQM leaves the factory with setpoints programmed to default values. These values are shown in all the
setpoint message illustrations. Many of these factory default values can be left unchanged. At a minimum how-
ever, setpoints that are shown shaded in Section 4.3.1: CURRENT/VOLTAGE CONFIGURATION on page 4–
19 must be entered for the system to function correctly. In order to safeguard against the installation of a PQM
whose setpoints have not been entered, the PQM will alarm and lock out until the values have been entered for
these setpoints. The
CRITICAL SETPOINTS NOT STORED
alarm message is present until the PQM is programmed
with these critical setpoints.