ABB Relion 611 Series, Technical Manual

Page: 166 / 536

4.1.6.8 Monitored data
Table 149: MPTTR Monitored data
Name Type Values (Range) Unit Description
TEMP_RL FLOAT32 0.00...9.99 The calculated
temperature of the
protected object relative
to the operate level
TEMP_AMB FLOAT32 -99...999 °C The ambient temperature
used in the calculation
THERMLEV_ST FLOAT32 0.00...9.99 Thermal level at
beginning of motor
startup
THERMLEV_END FLOAT32 0.00...9.99 Thermal level at the end
of motor startup situation
T_ENARESTART INT32 0...99999 s Estimated time to reset of
block restart
MPTTR Enum 1=on
2=blocked
3=test
4=test/blocked
5=off
Status
Therm-Lev FLOAT32 0.00...9.99 Thermal level of
protected object (1.00 is
the operate level)
4.1.6.9 Technical data
Table 150: MPTTR Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured
current: f
n
±2 Hz
Current measurement: ±1.5% of the set value or
±0.002 × I
n
(at currents in the range of 0.01...4.00
× I
n
)
Operate time accuracy
1)
±2.0% of the theoretical value or ±0.50 s
1) Overload current > 1.2 × Operate level temperature
4.1.6.10 Technical revision history
Table 151: MPTTR Technical revision history
Technical revision Change
B Added a new input
AMB_TEMP
.
Added a new selection for the Env temperature
mode setting "Use input".
C Internal improvement.
D Time constant stop range maximum value
changed from 8000 s to 60000 s.
E Internal improvement.
Section 4
1MRS757454 D
Protection functions
160 611 series
Technical Manual