GE 339

CHAPTER 6: SETPOINTS S3 PROTECTION
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 6–101
Figure 6-43: RTD Trouble Alarm logic diagram
230 446 186.82
240 464 190.45
250 482 194.08
Temperature 100 Ω Pt (DIN 43760)
o
C
o
F
OR
SETTING
RTD TROUBLE ALARM
Enabled = 1
S3 RTD TROUBLE ALARM
AND
BLOCK 1
Off = 0 BLOCK 2 BLOCK 3 Off = 0 Off = 0
LOGIC OPERAND
RTD Trouble Alarm OP Any Alarm OP
TARGET MESSAGE
RTD Trouble Alarm State: Operate
896829A3.cdr
S3 RTD TROUBLE ALARM
RTD #12 Temp T12
T12
OR
RTD #1 Temp T1
o
T1 > 250 C
o
T1 < -50 C
T1
OR
RTD TROUBLE ALARM
o
T12 > 250 C
o
T12 < -50 C
ACTUAL VALUE
RTD #1 Temp
RTD #12 Temp
SETTINGS
RUN
From other RTDs
OR
From other RTDs
Disabled = 0
SETTINGS
OUTPUT RELAY X Do Not Operate, Operate