MesCom
– Workshop Manual – D6000/i14/V10
© Dycon Ltd 2014
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7
2.5.2 Analogue Input Wiring Options
Analogue signal with a
maximum of 3V or less
can be connected
directly to the MesCom.
Pull up or down
Ip1
Ip2
Ip3
Ip4
0V
Op1
Op2
Signal Max 3V
0V
Examples
Low voltage analogue sensors
Including: temperature, pressure, weight, tank depth, flow rate
Analogue voltage inputs
above 3V need to be
scaled with resistors to
give a maximum of 3V to
the MesCom input.
The MesCom can then
be configured to scale
them back again.
R1 1K
Ω
R2 = (max voltage/3
– 1)
× R1
Pull up or down
Ip1
Ip2
Ip3
Ip4
0V
Op1
Op2
1k2
3k6
Analogue Voltage
signal up to 12v
0V
Select resistor values
depending on the
maximum input voltage
Examples
Supply voltage monitoring
Battery voltage monitoring
Analogue sensor.
Including: Temperature, pressure, weight, tank depth, flow rate
4-20mA Current inputs
Convert to a voltage with
a resistor.
R = 3/max current
Pull up or down
Ip1
Ip2
Ip3
Ip4
0V
Op1
Op2
10
0r
Analogue Current
signal upto 30mA
4-20mA Signal
Return
Examples
4-20mA Sensors
Including: Oil pressure, temperature, strain and stress.
Sender units and
thermistors can also be
connected to the
MesCom but these
sensors are non-linear
so should be used with
caution.
Pull Up resistor
Connection dependant on individual
sensor and beyond the scope of this
manual.