PTZ-BOX 5.0 User manual, document edition: 13
29
•
HF1/LF1 (63)
–
Vm and main counters are driven from HF1 input, control counter V2 driven
from LF1 input,
•
HF1/HF2 (67)
–
Vm and main counters are driven from HF1 input, control counter V2 driven
from HF2 input,
•
HF1/EN (69)
–
Vm and main counters are driven from HF1 input, control counter V2 driven
from EN input,
•
HF1/SCR (68)
–
Vm and main counters are driven from HF1 input, control counter V2 driven
from SCR input,
•
EN (90)
–
Vm and main counters are driven from EN input, without control input,
•
EN/LF1 (93)
–
Vm and main counters are driven from EN input, control counter V2 driven
from LF1 input,
•
EN/HF1 (96)
–
Vm and main counters are driven from EN input, control counter V2 driven
from HF1 input,
•
SCR (80)
–
Vm and main counters are driven from SCR input, without control input,
•
SCR/LF1 (83)
–
Vm and main counters are driven from SCR input, control counter V2 driven
from LF1 input,
•
SCR/HF1 (86)
–
Vm and main counters are driven from SCR input, control counter V2 driven
from HF1 input,
•
D-LF1/LF2 (134)
–
Vm is driven depending on detected direction of flow
–
indirectly from LF1
input, control counter V2 driven from LF2 input (direction independent),
•
D-HF1/HF2 (167)
–
Vm is driven depending on detected direction of flow
–
indirectly from
HF1 input, control counter V2 driven from HF2 input (direction independent)
6.1.2
Configuration of counting input encoder (EN, SCR)
Properly configured gas meter equipped with encoder should have synchronized values of
encoder’s Vo counter and gas meter counter
.
After setting configuration of counting inputs with encoder, further modifications of
volume counter at measurement conditions are not possible.
Gas meter equipped with encoder output of NAMUR or SCR standard periodically sends information
with absolute state of gas meter counter. Conversion device with configuration of counting inputs
using encoder takes read of encoder’s counter Vo and uses it as
volume counter at measurement
conditions
Vm
(
V2
).
For installing or replacing gas meter for another one, equipped with encoder, it is required to
perform following procedure:
•
stop counting of gas in conversion device by setting special configuration
ConfImp
=0.
Counting of flow from any input will be stopped,
•
install / replace gas meter,
•
in conversion device
–
set volume counters at measurement conditions
Vm
and
V2
to value
same as one in new gas meter,
•
start counting of gas in conversion device by setting appropriate counting configuration.
For additional protection the device is equipped with function of gas meter installation. The
function is activated by change the parameter
ConfImp
. The function of installation use the first
telegram read from encoder for synchronization counters
Vm
(
V2
) and the second and next
telegrams are used for driving the counters.
