GE Multilin
239 Motor Protection Relay
4-1
4 PROGRAMMING
4 PROGRAMMING
4
239 INSTRUCTION MANUAL 4 PROGRAMMING
4.1 SETPOINT ENTRY METHODS
Prior to operating the 239 relay, setpoints defining system characteristics and protection settings
must be entered, via one of the following methods:
1. Front panel, using the keys and display.
2. Rear terminal RS485 port and a computer running the 239PC communication program available
from GE Multilin.
3. Rear terminal RS485 port and a SCADA system running user-written software.
Any of these methods can be used to enter the same information. However, a computer makes entry
easier and files can be stored and downloaded for fast, error free entry. To facilitate this process, the
239PC programming software is available from GE Multilin. With this program installed on a portable
computer, all setpoints can be downloaded to the 239.
Setpoint messages are organized into logical groups or pages for easy reference. Setpoint mes-
sages are described individually and a reference of all messages is also provided at the end of the
chapter. Messages may vary somewhat from those illustrated because of installed options. Also,
some messages associated with disabled features are hidden. This context sensitive operation elim-
inates confusing detail. Before attempting to start the protected motor, setpoints on each page
should be worked through, entering values either by local keypad or computer.
The 239 relay 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 however, setpoints that are shown shaded on Figure 4–3: SETPOINTS PAGE 2 – SYS-
TEM SETUP on page 4–9 must be entered for the system to function correctly. In order to safeguard
against the installation of a relay whose setpoints have not been entered, the 239 will trip and lock out
until the values have been entered for these setpoints. A warning message “CAUSE OF LAST TRIP:
PARAMETERS NOT SET” along with a trip condition is present until the 239 is programmed with these
critical setpoints.
Summary of Contents for 239
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Page 16: ...1 10 239 Motor Protection Relay GE Multilin 1 OVERVIEW 1 OVERVIEW 1 ...
Page 104: ...6 14 239 Motor Protection Relay GE Multilin 6 239PC SOFTWARE 6 239PC SOFTWARE 6 ...
Page 150: ...8 10 239 Motor Protection Relay GE Multilin 8 TESTING 8 TESTING 8 ...
Page 152: ...A 2 239 Motor Protection Relay GE Multilin A 1 239 WARRANTY APPENDIX A A ...
Page 157: ...GE Multilin 239 Motor Protection Relay NOTES ...