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

Data logging	Yes, internal memory
Weight	Approx. 300 g
Input Voltage	24 V DC
Display	LCD, 2x16 characters
Communication Interfaces	CAN
Dimensions	144 x 90 x 59 mm

Summary

General Information

Core Concepts

Input Variables

Explains the link between sensors and function inputs for data.

Parameters and Settings

Hystereses

Adjustable start and stop differentials creating switching hysteresis for control.

Analogue Function

Calculation Parameters

Settings for calculations like minimum, maximum, average, sum, and filter.

Multiplexer and Demultiplexer Parameters

Configuration for selecting input variables and routing output values.

Heating Demand

Cooling Demand

DHW Demand

Shading Function

Individual Room Control

Heating Circuit Control

Operation Modes

Blind Control

Cascade

Cooling Circuit Control

Pasteurisation Function

Message Function

Mixer Control

PID Control

P-I-D Values and Parameters

Explains proportional, integral, and derivative components for system control.

Profile Function

Time Switch

Time Programs and Settings

Scaling Function

Solar Cooling

Solar Control

Solar Start / Drainback

Timer Function

Parameters and Modes

Heat Meter

Parameters and Calibration

Maintenance Function

Conservatory Function

Input Variables and Parameters

Manages window ventilation based on room temp, wind, or rain sensors.

Meter / Counter

Hours Run and Pulse Counting

DHW Circulation

Input Variables and Parameters

Manages DHW circulation pump based on time, pulse, or mixing protection.