Requirements - Honeywell EK280 Applications Manual

EK280
− 2 = Vol. comparison
If the function is active, the volumes are recorded in internal intermediate counters
before they are added to the measured volume counter "Vm".
The currently leading counter drives the counter reading "Vm". Thus, there is the possibility that the Vm
counter reading is generated either by the LF or the RF transmitter (alternately).
In addition to pulse counting, the two counters are compared and evaluated as a function of the para-
meterized limit values. The limit values are divided into 3 different limits:
1) Deviation limit "Dev.L"
2) Failure limit "FailL"
3) Overflow limit "OvflL"

4.5.1 Requirements

− EK280 from FW V2.30 and higher
Parameterization program enSuite from V3.0.1 and higher
−
− The mechanical gas meter must have 2 pulse generators (LF, HF) or an encoder and a pulse
generator
− If HF pulses are to be registered in the EK, the external voltage supply for the EK280 must be
available
− To configure this function, the administrator lock must be open.
− Before the parameterization is carried out, the pulse generators must already be connected to the
inputs of the EK280.
Application Manual
If the counter reading difference of the internal counters exceeds
the parameterized limit value, a warning is emitted "3" (counter
deviation at input x) based on the low counter reading.
If the limit value is set to "0", the monitoring is deactivated.
(Limit value recommendation from the standard = 3 min × Qmax)
If the counter reading difference of the internal counters
exceeds the parameterized limit value, warning "2" (error at
input x), is emitted based on the low counter reading.
If the limit value is set to "0", the monitoring is deactivated.
(Limit value recommendation from the standard =
60min × Qmax)
If the counted volume of internal counters exceeds
the parameterized limit value, the warnings and alarms of the
previous limits are deactivated and the comparison starts in a
new interval.
If the limit value is set to "0", the monitoring is deactivated.
(Limit value recommendation from the standard = 100h × Qmax)
29
(Cmp.1 and Cmp.2)