Rosemount 2240S, Справочное руководство

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Reference Manual
300550EN, Rev AA
December 2010
6-5
Rosemount 2240S
Section 6. Service and Troubleshooting
6.2.4 Ground Fault
Detection
The Rosemount 2240S has a built-in function for ground fault detection. When
the ground fault detector is enabled, a faulty temperature sensor is indicated
in a status register (see “Temperature Element Status” on page 6-20). A
single fault will affect the measurement on all channels.
If one of the temperature elements fails, for example caused by a short circuit
to ground, you can change the jumper setting to temporarily disable ground
fault detection, see Figure 6-1.
Figure 6-1. Jumper for ground
leakage detection
NOTE!
Ground fault detection should only be used as a temporary solution in case of
a malfunctioning temperature element. The faulty temperature element must
be replaced for accurate measurement. See “Test and Simulation” on
page 6-9.
Enabled
Disabled