PTZ-BOX 5.0 User manual, document edition: 13
28
Inputs and outputs
Inputs
A total of 8 digital inputs, marked as DI1 to DI8 can be connected to the device:
-
6 configurable potential-free contact inputs (DI1 to DI5 and DI8):
o
Measuring inputs LF1, LF2 (inputs DI3, DI4)
–
frequency up to 60 Hz with the
possibility of cooperation with Wiegand transmitters, detection of flow direction
(when using two LF inputs with phase shifted pulses)
o
TS input
–
tamper switch, normally closed (input DI5),
o
Up to 6 digital inputs (inputs DI1, DI2, DI3, DI4, DI5, DI8)
1
-
2 configurable NAMUR inputs (inputs DI6, DI7):
o
2 HF pulse inputs, frequency 0÷5000 Hz,
detection of flow direction (when using two
HF inputs with phase shifted pulses)
o
HF2 (DI7) input can work with NAMUR encoder,
o
Up to 2 NAMUR digital inputs
1
1
–
Number of inputs acting as digital (signaling) depending on the configuration of the counting
inputs
6.1.1
Counting inputs: LF, HF, EN, SCR
Device is equipped with following counting inputs:
•
LF1 (3)
–
pulse input for connection with low frequency output of gas meter (connectors
19/20), active in all power modes, i.e. BATT, FULL,
•
HF1 (6)
–
pulse input for connection with high frequency output of gas meter in NAMUR
standard (connectors 25/26), active only in FULL power mode,
•
EN (9)
–
digital input for connection with encoder output of gas meter, in NAMUR standard
(connectors 27/28) active in all power modes, i.e. BATT, FULL. WARNING! Usage of NAMUR
encoder in BATT mode significantly reduces battery life of the device, frequency of readings
in BATT mode, that influences battery life, is configurable in parameter
ENBatPer
,
•
SCR (8)
–
digi
tal input for connection with gas meter’s SCR encoder output (connectors
29/30) active in all power modes, i.e. BATT, FULL. WARNING! Usage of SCR encoder in BATT
mode significantly reduces battery life of the device, frequency of readings in BATT mode,
that influences battery life, is configurable in parameter
ENBatPer
.
Available configurations:
•
STOP (00)
–
counting halted
–
for e.g. doing preliminary configuration of measuring system,
•
LF1 (30)
–
Vm and main counters are driven from LF1 input, without control input, (default)
•
LF1/LF2 (34)
–
Vm and main counters are driven from LF1 input, control counter V2 driven
from LF2 input,
•
LF1/HF1 (36)
–
Vm and main counters are driven from LF1 input, control counter V2 driven
from HF1 input,
•
LF1/EN (39)
–
Vm and main counters are driven from LF1 input, control counter V2 driven
from EN input,
•
LF1/SCR (38)
–
Vm and main counters are driven from LF1 input, control counter V2 driven
from SCR input,
•
HF1 (60)
–
Vm and main counters are driven from HF1 input, without control input,
