Basic Documentation

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Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Appendix 29.08.2008
13.3.2 Overview of function blocks
The following pages provide an overview of the function blocks for the RLU2…
universal controllers, including a brief description.
The configuration diagrams for the specific device type indicate how many of each
function block are available.
Basic configuration
Configuration Function
APPL ID (Anlagentyp)
•
Basic type A: Room temperature ventilation controller (sequence controller 1 is a room temperature
controller, room-supply air temperature cascade controller or supply air temperature controller)
•
Basic type U: Universal controller (sequence controller 1 is a universal controller)
•
A01 … , U01 ..: Selection of a programmed application (activation of a configuration stored in the
controller)
Input identifiers
LABEL (identifier) Configuration Functions
X1
x
Y
SIGNAL Y
LABEL
X1…X5
SIGNAL Y:
Input of input identifier (LABEL)
• Physical units:
TEMP (°C, °F),%, Universal 0.0 (display with one decimal place), Universal
0000 (display with no decimal places).
The unit is only required for presentation on the display. The controller
presents all settings that depend on the unit (e.g. P-bands) in the unit.
Sensor for TEMP:
Ni1000, 2x LG-Ni1000 (averaging), T1, Pt1000, DC 0…10 V, all other units
DC 0…10 V, adjustable range
• Digital (input for potential-free contacts)
• Special identifiers:
Room temperature (ROOM), outside temperature (OUTS), frost protection
(FRST), remote setpoint adjuster, absolute (REM) or relative (REL).
The controller itself makes internal connections for the special identifiers
•
SIGNAL Y provides for delivery of the passive sensor value as a DC 0…10
V signal via the Yx terminal of your choice
X1
x
Y
SIGNAL Y
LABEL
ROOM
Room temperature Sensor as described under "Sensors for TEMP"
X1
x
Y
SIGNAL Y
LABEL
SAT
Supply air temperature Sensor as specified under "Sensors for TEMP"
X1
x
Y
SIGNAL Y
LABEL
OUTS
Outside temperature Sensor as specified under "Sensors for TEMP" for the following functions:
• Summer / winter compensation
• Sequence locking according to the outside temperature
• Pump ON at low outside temperatures
• Maximum economy changeover of air dampers
Introduction