14 • vacon
Description of parameters
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4.2.2 Analog
Inputs
2.2.2.1
PT100 Analog Input selection (ID1221)
Selects the analogue input to be used for temperature measurement using PT100
sensor.
In BCU application you can use either Analogue input or OPT-B8 option board for PT100
connection. Both ways can not be used at the same time. If Analogue input has been
used for PT100 measurement the Analogue Output 1 is forced to 10mA level and it is
used as a power supply for PT100 sensor. Connection has been illustrated in Figure 4.
0 = Not used
1 = AI1
2 = AI2
Figure 4. PT100 connection.
2.2.2.2
PT100 In Series (ID1222)
Selects the number of PT100 elements connected in series.
0 = 1 * PT100
1 = 2 * PT100
2 = 3 * PT100
