Interrupts/diagnostic alarms
13.4 Diagnostics response
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
90 Manual, 12/2015, A5E36061895-AA
Diagnostics response
Diagnostics response
This section describes the response of the AI Energy Meter 480VAC ST when diagnostics
information is reported.
Measured values in the case of diagnostics
Even in the case of diagnostics, measured values continue to be displayed as long as they
can still be acquired. If measured values cannot be measured or calculated, "0" is displayed.
If the supplied current is less than the configured "Low limit for measuring current"
parameter, the current measurement and all dependent variables are suppressed or set to
"0".
If the secondary current fed in at the channel is higher than 12 A, the module changes to
limitation and the measured value of the current and all dependent variables are set to "0".
Value falls below "Low limit current measurement"
If current falls below the low limit for the current measurement, the following measured
values and derived variables of the affected phase are reset.
● Effective current value
● Neutral conductor current
● Active power
● Reactive power
● Apparent power
● Phase angle
● Power factor
A moving mean value is formed from the power values and they only become "0" after a
corresponding time. The energy meters for active, reactive and apparent energy of the reset
phase do not measure any longer.
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