Interrupts/diagnostic alarms
14.4 Diagnostics response
Analog input module AI Energy Meter 480VAC/CT HF (6ES7134-6PA00-0CU0)
Manual, 07/2018, A5E42674880-AA
113
Diagnostics response
Diagnostics response
This section describes the response of the AI Energy Meters HF 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.
Low limit for current measurement undershot (zero suppression)
If the supplied current is less than the configured "Low limit for current measurement"
parameter, the current measurement and all dependent variables are suppressed and set to
"0".
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
● 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 as well as
the operating hours counters do not count any longer.
If the secondary current fed in at the channel is higher than 12 A, the module changes to
limitation and the current measurement value of the current and all dependent variables are
set to "0".
If the AI Energy Meter HF is no longer recognized by the interface module (for example,
because it is defective or not plugged in), all input data are set to "0".
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