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Vaisala GMP252 - Vaisala Industrial Protocol; Connecting with a Computer

Vaisala GMP252
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3.4 Power Supply
The supply voltage range of the probe is 12 ... 30 VDC with the digital output option. If the
analog output is used, the supply voltage range is 12 ... 30 VDC for voltage output and
20 ... 30 VDC for current output.
Typical power consumption is less than 0.4 W in continuous operation, and the maximum is
0.5 W.
More Information
GMP252 Specifications (page 103)
3.5 Wiring
1
5
3
4
2
Table 5 M12 Male Connector
Pin# Function Note Cable 223263SP
Wire Colors
1 Power in With digital output: 12 ... 30 VDC
With voltage output: 12 ... 30 VDC
With current output: 20 ... 30 VDC
Typical average power consumption <0.4 W, maximum
0.5 W.
Brown
2 RS-485-
or voltage output
Voltage:
0 ... 5 VDC or 0 ... 10 VDC (default analog output scaling)
White
3 GND Blue
4 RS-485 +
or current output
Current:
0 … 20 mA or 4 ... 20 mA (default analog output scaling)
Black
5 Output control Connecting pin #5 to GND (pin #3) forces the probe to
analog output mode. If an analog output configuration
has not been selected, default 0 ... 10 VDC and 4 ... 20 mA
scalings are used.
If pin #5 is not connected, the analog or digital output
selected when ordering or set later through configuration
is used.
Gray
Note that the probe always remains in analog mode when pin #5 is connected to pin #3,
and cannot be switched to digital output in this wiring option.
Chapter 3 – Installation
25

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