ABB FEX300 - Recommended Settings for Diagnostic Limit Values

Extended diagnostic functions
OI/FEX300/FEX500-EN FEX300, FEX500 135
8.3 Recommended settings for diagnostic limit values
In the "Diagnostics / Diagnosis Control / ..." menu, limit values for the diagnostic values can be
specified.
In order to simplify their setting, recommendations for the individual limit values are shown here.
The values indicated are only intended as a rough guide and may need to be adapted in line
with on-site conditions.
8.3.1 Limit values for the coil resistance
"Diagnostics / Diagnosis Control / Sensor Measurements" menu
Parameter
T
medium
R coil min alarm R coil max alarm
-40 °C
(-40 °F)
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(coil resistance) x 0.71
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(coil resistance) x 0.79
-20 °C
(-4 °F)
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(coil resistance) x 0.81
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(coil resistance) x 0.89
0 °C
(32 °F)
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(coil resistance) x 0.9
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(coil resistance) x 1.0
20 °C
(68 °F)
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(coil resistance) x 0.95
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(coil resistance) x 1.05
60 °C
(140 °F)
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(coil resistance) x 1.19
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(coil resistance) x 1.31
90 °C
(194 °F)
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(coil resistance) x 1.28
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(coil resistance) x 1.42
130 °C
(266 °F)
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(coil resistance) x 1.43
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(coil resistance) x 1.58
180 °C
(356 °F)
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(coil resistance) x 1.62
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(coil resistance) x 1.79
The coil resistance depends on the fluid temperature T
medium
and the ambient temperature.