Elster 83 462 140, Operating Manual And Installation Instructions

Page: 59 / 126

Volume Conversion Device EK260
Elster GmbH 59
Md.I1 Mode for input 1
The operating mode of Input 1 (I1) can be defined here:
0: Switched off (input has no function).
1: Pulse counting
5: Encoder input
(The values "2" and "3" can also be entered here, but they are not meaningful.)
If the EK260 is connected to the pulse output (reed contact) of a counter, Md.I1
should be set to "1".
With the connection of a gas meter with encoder (
→
4.5 ) Md.I1 should be set to
"5". With an EK260 without encoder capability "5" cannot be set. An attempt to
make an entry leads to entry error "11". (
→
2.3.3)
With an encoder connected V can be set to the gas meter reading and VmD
cleared by entering "0" and then "5" again.
If a connected gas meter with encoder is to be r eplaced by a new one,
Md.I1
should be set to "0" before making the connection and set to "5" again afterwards.
(Further details are given in
→
4.5).
When using an encoder in the battery mode, the expected battery service life is
reduced significantly compared with the use of an LF pulse transmitter. In or der to
obtain a longer battery service life, two battery packs (4 batteries) can be used in
this case. (
→
3.9: Bat.R and Bat.C)
V1 Adjustable volume counter on Input 1
The volume counted on Input 1 is summed in V1. V1 counts independent of the
alarm conditions. The progress therefore corresponds to that of VmT and VmA (
→
3.2). V1 is an "adjustable counter" like VmA, i.e. it is subject to the supplier's lock
and can therefore be set to any reading without opening the calibration lock.
V1 is the gas volume measured on Input 1. The increase in volume is directly
accepted into the total actual volume VmT (
→
3.2).
q.max Maximum flow (only in encoder mode)
This value is only displayed and used in the encoder mode ( Md.I1 = 5).
q.max is used for plausibility monitoring of the counter readings supplied by the
encoder: If the flow Qm (
→
page 25), calculated through the change of counter
reading, exceeds the set value for q.max , the last counter reading is discarded and
then the next one is used for further quantity counting. (In this way no quantities
are lost.)
If q.max = 0 is set, the plausibility monitoring is switched off.
cp.I2 cp value Input 2
If Input 2 is set as a counting input ( Md.I2 = 1, see below), the pulse constant must
be entered here which is used for the conversion of the pulses to the volume V2
(see below).
cp.I2 is not subject to the calibration lock because it has no influence on Vm or Vb .
Input 2 can only be used for pulse comparison with Input 1 (
→
MdMI2, see below) .
If Input 2 is set as a status input ( Md.I2 = 2, see below), cp.I2 has no significance.