Numerical Setpoints; Enumeration Setpoints; The Help Key - GE 469 Instruction Manual

Changing Setpoints

The HELP Key

Numerical Setpoints

Enumeration Setpoints

GE Multilin
Pressing the HELP key displays context-sensitive information about setpoints such as
the range of values and the method of changing the setpoint. Help messages will
automatically scroll through all messages currently appropriate.
Each numerical setpoint has its own minimum, maximum, and step value. These
parameters define the acceptable setpoint value range. Two methods of editing and
storing a numerical setpoint value are available.
The first method uses the 469 numeric keypad in the same way as any electronic
calculator. A number is entered one digit at a time with the 0 to 9 and decimal keys.
The left-most digit is entered first and the right-most digit is entered last. Pressing
ESCAPE before the ENTER key returns the original value to the display.
The second method uses the VALUE
step value, up to a maximum allowed value. Likewise, the VALUE
the displayed value by the step value, down to a minimum value. For example:
1. Select the
S2 SYSTEM SETUP
setpoint message.
MOTOR NAMEPLATE
VOLTAGE: 4000 V
2. Press the 1, 3, 8, 0, and 0 keys. The display message will change as shown.
MOTOR NAMEPLATE
VOLTAGE: 13800 V
3. Until the ENTER key is pressed, editing changes are not registered by the relay.
Therefore, press the ENTER key to store the new value in memory. This flash
message will momentarily appear as confirmation of the storing process.
NEW SETPOINT HAS
BEEN STORED
The example shown in the following figures illustrates the keypress sequences
required to enter system parameters such as the phase CT primary rating, ground
CT primary rating, bus VT connection type, secondary voltage, and VT ratio.
The following values will be entered:
Phase CT primary rating: 600 A
Motor Full Load Current: 318 A
Ground CT ratings: 50/5 A
Phase Differential CT: None
Voltage Transformer Connection Type: Open Delta
Motor Nameplate Voltage: 13800 V
VT Ratio: 115:1
http://www.GEindustrial.com/multilin
Motor Management Relay
key to increment the displayed value by the
VOLTAGE SENSING MOTOR NAMEPLATE VOLTAGE
469
key decrements
1–7