Daikin ACS320 User Manual

Actual Value Scaling
The scaling of actual values can be protocol dependent. In general, for Actual Values, scale the feedback integer
using the parameter’s resolution. (See Parameter Descriptions starting on page 30 for parameter resolutions.)
For example:
Feedback Integer Parameter Resolution (Feedback Integer) * (Parameter Resolution) = Scaled Value
1 0.1 mA 1 * 0.1 mA = 0.1 mA
10 0.1% 10 * 0.1% = 1%
Where parameters are in percent, the “Parameter Descriptions” section species what parameter corresponds to 100%. In such
cases, to convert from percent to engineering units, multiply by the value of the parameter that denes 100% and divide by 100%.
For example:
Feedback Parameter Value of the Parameter (Feedback Integer) * (Parameter Resolution)
Integer Resolution that denes 100% * (Value of 100% Ref.) / 100% = Scaled Value
10 0.1% 1800 rpm1 10 * 0.1% * 1800 RPM / 100% = 18 rpm
100 0.1% 600 Hz2 100 * 0.1% * 600 Hz / 100% = 60 Hz
1. Assuming, for the sake of this example, that the Actual Value uses parameter 9908 MOT NOM SPEED as the 100% reference,
and that 9908 = 1800 rpm.
2. Assuming, for the sake of this example, that the Actual Value uses parameter 9907 MOT NOM FREQ as the 100% reference,
and that 9907 = 6.00 Hz.
Although Actual Value scaling could differ from the above for
the N2 and FLN protocols, it currently does not. To conrm, see
the following sections, as appropriate:
• N2 Analog Input Objects in the N2 Protocol Technical
Data section.
• Scaling Drive Feedback Values in the FLN Protocol
Technical Data section.
Scaling does not apply for the BACnet protocol.
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Daikin ACS320 Specifications

General

Brand	Daikin
Model	ACS320
Category	Controller
Language	English