Setting and adjusting setpoints - Basic Documentation - RDF600KN - RDF600KN/S - RDF600KN/VB

Semi-flush mount room thermostats with KNX communications RDF301, RDF301.50, RDF301.50H, RDF600KN, RDF600KN/VB, RDF600KN/S

Product Family
Desigo PX Open
Desigo Open
Product Group
Thermostats (temperature controller with sensor)
Building automation
Content Language
English
Content Type
Technical Documentation > Basic Documentation
Product Version
Status
Valid
Date
2020-02-21
Document No
CE1P3171en
Download ID
A6V10385333
Stock No.
S55770-T293
S55770-T400
S55770-T430
Product No.
RDF600KN
RDF600KN/S
RDF600KN/VB
Access level
Internet
File Type
html

Room temperature setpoints can be

  • set during commissioning

  • adjusted during runtime

knx-logo.png
Comfort basic setpoint
Comfort setpoint
Economy heating setpoint
Economy cooling setpoint

The source can be

  • the local HMI

  • a tool

  • a central control unit

The thermostat stores the setpoints

  • in EEPROM in the form of parameters

  • in the runtime memory

The table below shows the interrelations:

1) Only required for heating AND cooling applications (see section 3.6.8 Setpoints and sequences).

2) LTE Mode: the shift is added to the local shift.

3) S-Mode: the last intervention wins, either S-Mode input or local operation.

knx-logo.png
Current setpoint

The current setpoint (used by the thermostat for temperature control) is available on the bus for use in the central control unit.

General notes:

  • The supported communication objects are different in LTE Mode and S-Mode.

  • Changes via the local HMI or via tool have the same priority (last always wins).

  • Setting the Comfort basic setpoint will reset the runtime Comfort setpoint to the basic setpoint.

Notes on setpoint adjust­ment (LTE Mode with Synco only)

  • Central setpoint shift is used for summer / winter compensation in particular.

  • Setpoint shift does not affect the setpoints stored in parameters P08, P11, P12, P33.

  • Local shift and central shift are added together.

  • Applies only to Comfort and Economy setpoints; Protection setpoints are not shifted centrally.

  • The resulting (current) setpoint heating and cooling is limited by the Protection setpoint; if Protection setpoint is OFF, then minimum 5 °C and maximum 40 °C are used.

  • The resulting setpoints for cooling and heating of the same operating mode have a minimum distance of 0.5 K between them.

  • The result of local and central shift, together with the room operating mode, is used by the thermostat for temperature control (current setpoint).

Setpoint priority,
Setpoint Master RMB
(RDF600KN, RDF600KN/VB)

  • The room thermostat always adopts the received setpoints from the controller RMB795. Thus the Comfort setpoints locally adjusted on the RDF600KN, RDF600KN/VB room thermostats are overwritten by the Comfort setpoints of the room group
    (i.e. within every 15 min).

Note:

  • On RMB SW Version >= 2.0 it is possible to define under which circumstances the controller has to send out the setpoints:

    - Always (every 15min)

    - Not in Comfort mode

    - Only when changed

  • See "Setpoint priority" and "Setpoint Master" functions on RMB795B.

  • RDF600KN, RDF600KN/VB SW version < V1.8: The local Comfort setpoints are overwritten only if the RMB setpoints are changed.