Table of Contents
Advertisement
SETPOINTS
Settings text abbreviations
6–4
•
Settings: Shown as a block with a heading labeled 'SETTING'. The exact wording of the
displayed setpoint message identifies the setpoint. Major functional setpoint
selections are listed below the name and are incorporated in the logic.
•
Compensator Blocks: Shown as a block with an inset box labeled 'RUN' with the
associated pickup/dropout setpoint shown directly above. Element operation of the
detector is controlled by the signal entering the 'RUN' inset. The measurement/
comparison can only be performed if a logic '1' is provided at the 'RUN' input. The
relationship between setpoint and input parameter is indicated by the following
symbols: "<" (less than) " >" (greater than), etc.
•
Time Delays: Shown as a block with either pickup, drop-out, or both; times in
milliseconds or seconds. If the delay is adjustable, associated delay setpoint is shown
with block SETPOINT on the top of the delay block.
LED Indicators: Shown as the following schematic symbol, □. The exact wording of
•
the front panel label identifies the indicator.
•
Logic: Described with basic logic gates (AND, OR, XOR, NAND, NOR). The inverter
(logical NOT), is shown as a circle: ○.
The following abbreviations are used in the setpoints pages.
•
Acceleration time: ACCEL TIME; ACCEL T
•
Alarm: ALM, ALRM
•
ASDU: ASD
•
Auxiliary: AUX
•
Average: AVG
•
Average Line Voltage: Vav
•
Block: BLK, BLCK
•
Contactor: CONT
•
Control: Ctrl
•
CT Secondary: CT SEC
•
Current: CURR
•
Current Unbalance: CURR UNBAL
•
Delay: DLY
•
Emergency Restarts: EMERG RESTARTS
•
Function: FUNC, FUNCTN
•
Ground: GND
•
High Speed: SPD2
•
Hour: Hr
•
Initiate: INILoad Increase: LOAD INCRLogic Element: LE; LOGIC E
•
Maintenance: MAINTEN, MAINT
•
Mechanical Jam: MECH JAM
•
Neutral: NTRL
•
O/L: overload
•
Password: PSWD, PSW
•
Preset: PRST
•
Protection: PROT
•
POWER: PWR
•
Primary: PRIM
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: SETPOINTS
Advertisement
Table of Contents
