When temperature input TEMP is greater than
TempAlarmLimit
, then temperature
alarm TEMP_ALM will be initiated. Similarly, if temperature input TEMP is greater
than
TempLOLimit
, then TEMP_LO will be initiated.
There may be sudden change in temperature of the medium for a very small time, for
which the function need not to initiate any alarm. That is why two time delays
tTempAlarm
or
tTempLockOut
have been included. If the temperature goes above the
settings for more than these time delays, then only the corresponding alarm
TEMP_ALM or lockout TEMP_LO will be initiated. The SET_T_LO binary input is
used for setting the temperature lockout. The TEMP_LO output retains the last value
until it is reset by using the binary input RESET_LO. Hysteresis type comparators
have been used with the setting for relative and absolute hysteresis. The binary input
BLK_ALM can be used to block the alarms, and the BLOCK input can block both
alarms and the lockout indication.
16.2.7
Technical data
Table 652:
SSIMG Technical data
Function
Range or value
Accuracy
Pressure alarm level
1.00-100.00
±10.0% of set value
Pressure lockout level
1.00-100.00
±10.0% of set value
Temperature alarm level
-40.00-200.00
±2.5% of set value
Temperature lockout level
-40.00-200.00
±2.5% of set value
Time delay for pressure alarm
(0.000-60.000) s
±0.2% or ±250ms whichever is
greater
Reset time delay for pressure
alarm
(0.000-60.000) s
±0.2% or ±250ms whichever is
greater
Time delay for pressure lockout
(0.000-60.000) s
±0.2% or ±250ms whichever is
greater
Time delay for temperature
alarm
(0.000-60.000) s
±0.2% or ±250ms whichever is
greater
Reset time delay for
temperature alarm
(0.000-60.000) s
±0.2% or ±250ms whichever is
greater
Time delay for temperature
lockout
(0.000-60.000) s
±0.2% or ±250ms whichever is
greater
16.3
Liquid medium supervision SSIML
16.3.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Liquid medium supervision
SSIML
-
71
1MRK502052-UEN B
Section 16
Monitoring
893
Technical manual
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