User manual

IRIS Configuration - Manual
IRIS-Confi g-Manual-1a
10
Input setup
An IRIS-unit can have up to six inputs. The inputs can be set to either digital or analogue.
Voltage range
Different models of the IRIS-unit have different voltage range on there inputs.
Digital
The input is either high or low. The result is stored in InputA.
Lower limit
Defi nes the upper limit for a low level.
Upper limit
Defi nes the lower limit for a high level.
Analogue
The input has an analogue value that equals the input voltage multiplied with the scale factor
and added to the offset.
Analogue value = Measured value * Scale + Offset
It has also two digital values. One for the lower limit stored in InputA and one for the upper
limit stored in InputB.
Lower limit
Defi nes the lower of two limits. It is scaled and uses the hysteresis.
Upper limit
Defi nes the upper of two limits. It is scaled and uses the hysteresis.
Hysteresis
The hysteresis is scaled and symmetric around the limit – Limit ± Hysteresis/2.
Scale
The scale factor is a value used to modify the measured value.
• Min
• 0.001
• Max
• 1000
Offset
The offset is an integer value used to modify the scaled value and cannot be more than thirty
times the scale factor.