Martel Electronics MPP-28-M - Manual (Page 2)

PanelPilot Compatible Smart Graphics Display
The input voltage range is decided using the two voltages that the user enters in the
scaling section of the Panel Pilot software. The software uses the smallest range
available, which can accommodate both of the voltages entered by the user. The
absolute maximum voltage input is 40V d.c.
For example:
Entering a voltage scale of 0 – 30V in the software will use the 0 – 40V range.
Entering a voltage scale of 0 – 3V in the software will use the 0 – 4V range.
Entering a voltage scale of 5 – 15V in the software will use the 0 – 20V range.
HARDWARE
Screw Terminal Functions
1 IN2 Analogue voltage input 2 (maximum of 40V d.c.)
2 IN1 Analogue voltage input 1 (maximum of 40V d.c.)
3 0V 0V power supply input
4 V+ Positive power supply input (4V – 30V d.c.)
Typical Supply Current
Voltage Range (V)
0 - 1.25
0 - 2.5
0 - 4
0 - 5
0 - 8
0 - 10
0 - 20
0 - 40
Resolution (mV)
4.9
2.4
2.0
1.2
1.0
0.3
9.8
0.6
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USB connection
A ‘Type A to Mini-B’ USB cable is required to program and customise the SGD 28-M. It typically takes 10 seconds to send a configuration,
with an additional 5 seconds needed for the hardware to reset.
Note: V+, IN1 and IN2 share a common ground (i.e. not floating or isolated from each other).
0
100
200
4 17 30
Current (mA
)
Voltage (V)
MPP-2 8-M
Voltage InputThe MPP-28-M features 2 voltage inputs, which use a Programmable GainAmplifier (PGA) to make the best use of
independently, with the option of eight different input voltage ranges: available resolution (the smallest voltage range
offers the highest resolution). Each channel can be programmed.
The MPP-28-M can be powered directly from USB and is compatible with both USB 1.1 and USB 2.0.
The screw terminals and advanced connector can remain connected while still using USB,
but it is not necessary for V+ to be powered.