Technische Alternative UVR 16x2 User Manual

Comparison function
147
Comparison function
Function description
The two values A and (B + differential) are compared, producing the two digital output variables
A > (B + differential) and inverse (A > (B + differential)).
There is also an output variable available for the condition A = B.
Input variables
Enable
General enabling of the function (digital value ON/OFF)
Value A
First analogue comparison value
Value B
Second analogue comparison value
➢ Value A cannot be entered by the user. Value B may also be a fixed value. Such a value
can be entered by specifying User as the Source.
➢ If sensors are assigned to both values, the result is a simple differential function.
➢ If comparing two sensors, it is recommended to connect the hotter of the two sensors to
Value A.
➢ If a room sensor (RAS, RASPT, RAS-PLUS, RAS-F) is used as the source of a value, the
transmitted temperature value is applied (without offset values from the operating mode
switch).
Parameters
Function quantity
Diff. on
Diff. off
A wide range of function quantities are available, which are applied
together with their unit and their decimal places.
Start differential for Value B
Stop differential for Value B
➢ In many applications this function will equate to a thermostat. However, the function quantity
setting enables a comparison of any numeric values.
Output variables
A > (B + diff.)
Status ON if value A > value (B + Diff.); selection of the output
Inverse (A > (B + diff.))
Status ON if value inverse (value A > value (B + diff.)); selection of
the output
A = B
Status ON if value A = value B
➢ If Enable is OFF, then all output variables will be OFF.
➢ Both A > (B + diff.) and inverse (A > (B + diff.)) are available as output variables.
When comparing a value captured by a temperature sensor with a fixed threshold value
(value B entered under User in the input variables), this equates to a mechanical thermostat
with a changeover contact: (A > (B + diff.) = normally open and inverse (A > (B + diff.)) =
normally closed).
➢ If value A = value B applies, then one of the other two output variables will always be set to
status ON as well.

Technische Alternative UVR 16x2 Specifications

General

Brand	Technische Alternative
Model	UVR 16x2
Category	Controller
Language	English