Elster EK220, Operating Instructions And Installation Information, Page: 61 / 120

Volume Conversion Device EK220
© Elster GmbH 61
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.
Md.I2 Mode for Input 2
The application of Input 2 (I2) can be defined here.
0: Switched off (input is not used).
1: Counting input.
2: Status input.
When the input is used as a counting input, the EK220 can, for example, be pa-
rameterised such that it carries out a pulse comparison of Inputs 1 and 2 and si g-
nals impermissibly large deviations.
With the setting "status input" the EK220 can, for example, signal attempts at tam-
pering on a pulse generator of the gas meter, provided the meter also supports
this.
After setting
Md.I2 the function on Input 2 is particularly defined with MdMI2 (see
below).
St.I2 Status on Input 2
If Md.I2 = "2" (see above), the status of Input 2 is displayed here:
St.I2 = 0: Input signal is inactive (no signalling).
St.I2 = 1: Input signal is active (signalling).
MdMI2 Mode for monitoring E2
SC.I2 Source for monitoring E2
L1.I2 Limit 1 E2
L2.I2 Limit 2 E2
SpI2
Status pointer for monitoring E2
F
For MdMI2 only enter one of the values described here: "2", "3", "5" or "17".
Depending on the system and after entering the key combination
ENTER
, other
values are offered which are however not meaningfully applicable here.
Depending on the application of Input 2 as counting or status input (see above:
Md.I2 ), the following functions can be realised by setting these values:
If Input 2 is a counting input, the function "pulse comparison" can be set.
If Input 2 is a status input, the functions "active warning input", "inactive warning
input", "active reporting input", "inactive reporting input" and "time -synchronous in-
put" can be set.
"Warning input" signifies that the status message "
I2 Warn.sig. " is affected. This is
entered in the momentary status St.2 and in the status register SR.2 .
"Reporting input" signifies that the status message " I2 Rep.sig. " is affected. This is
only entered in the momentary status St.2 and not in the status register.
"Active": A signal arises when the input terminals are short-circuited (switch to
switching point "on",
®
B-4).
"Inactive": A signal arises when the input terminals are parted (switch to switching
point "off",
®
B-4).