1592025050 iProChill v2.5 10D00 AG v1.3 GB 18.02.2016.docx iProCHILL 166/205
9.7 ANALOGUE INPUTS RANGE
When an AI is configured as a pressure probe (4÷20 mA / 0÷ 5 Volt), the value is restrained to range set by
parameters in group RA.
RA01 – RA20: On board probes range (1 - 10)
RA21 – RA24: 1
st
XEV20D probes range (3 - 4)
RA25 – RA28: 2
nd
XEV20D probes range (3 - 4)
RA29 – RA32: 3
rd
XEV20D probes range (3 - 4)
RA33 – RA36: 4
th
XEV20D probes range (3 - 4)
RA37 – RA50: 1
st
expansion probes range (1 - 7)
RA51 – RA64: 2
nd
expansion probes range (1 - 7)
RA65 – RA78: 3
rd
expansion probes range (1 - 7)
RA79 – RA92: 4
th
expansion probes range (1 - 7)
The probe type is determined by parameter SP01.
If SP01=0/1, the probe is current type (4÷20 mA).
If SP01=2/3, the probe is voltage type (0÷ 5 Volt).
For example, suppose:
IO01 = 52 - Circuit n° 1 condensing pressure probe (4÷20 mA / 0÷ 5 Volt)
RA01 = 1.0 Bar
RA02 = 10.0 Bar
SP01 = 2
So probe 1 measured pressure will be:
If AI01 = 0V, probe 1 pressure = 1.0 Bar (RA01)
If AI01 = 5V, probe 1 pressure = 10.0 Bar (RA02)
If AI01 = 2.5V, probe 1 pressure = 6.0 Bar ( RA01 + (RA02 - RA01) / 2 )
See graph below:
Voltage
Pressure
0 V 5 V
Low limit RA01
High limit RA02
2.5 V
RA01 + (RA02-RA01)/2
9.8 FURTHER CONNECTIONS
1 USB
1 Network
1 connecter for/GSM modem /XWEB modem
1 RS485 master
1 RS485 slave
1 CANbus
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