Setpoint Entry Methods - GE 239 Instruction Manual

GE Consumer & Industrial
Multilin
239
Motor Protection Relay
CAUSE OF LAST TRIP:
MECHANICAL JAM
TRIP AUXILIARY PICKUP
ALARM SERVICE COMMUNICATE
ACTUAL
MESSAGE
SETPOINT
STORE
VALUE
RESET
4.1 Programming
4.1.1

Setpoint Entry Methods

239 MOTOR PROTECTION RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
239 Motor Protection Relay
Chapter 4: Programming
Programming
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
messages 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 eliminates 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 – System Setup on page 4–20 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.
4–11