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Siemens Building Technologies SED2 variable speed drives CM1U5192en
HVAC Products Programming 01.2002
r0774
Shows the analog output value (in V or mA) after filtering and scaling.
Index:
P0774[0]: Analog output 1 (DAC 1).
P0774[1]: Analog output 2 (DAC 2).
P0776
Defines the type of analog output.
Possible settings:
0 Current output 0 to 20 mA (factory setting)
1 Voltage output 0 to 10 V
Note: The analog outputs are designed as current outputs within 0 to 20 mA. Both
analog outputs must be configured as the same type. Both channels are
configured, e.g., as either current outputs with range 0 to 20 mA, or as voltage
outputs with range 0 to 10 V.
P0777 to P0780:
Define the output characteristic in %. The DAC scaling parameters (P0777 to P0781)
are used to set the output characteristics. They are configured according to the
following curve.
Ausgangssignal (mA)
0
20
20 mA
P0780 y2
P0778 y1
P0777
x1
P0779
x2
100%(-100%)
Points P1 (x1, y1) and P2 (x2, y2) are freely selectable.
Example:
The factory-set scaling is as follows:
P1: 0.0%=0mAor0Vand
P2: 100.0 % = 20 mA or 10 V.
Index:
P0777[0]: Analog output 1 (DAC 1).
P0777[1]: Analog output 2 (DAC 2).
P0777: Defines x1 of the output characteristics (factory setting = 0.0).
P0778: Defines y1 of the output characteristics (factory setting = 0).
P0779: Defines x2 of the output characteristics (factory setting = 100).
P0780: Defines y1 of the output characteristics (factory setting = 10).
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