Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoint
- 4.4 Application overview
- 4.5 Additional functions
- 4.6 Control sequences
- 4.7 Control outputs
- 4.8 Fan control
- 4.9 Multifunctional input, digital input
- 4.10 Handling system faults
- 4.11 Modbus RTU mode
- 4.12 Communication objects
- 4.13 Control parameters
- 5 Connection
- 6 Technical data
- 7 Dimensions
- Index
Connection
Connection terminals
5
58 | 66
A6V12114068_en--_c
5 Connection
5.1 Connection terminals
RDF660MB/MM
RDF660MB
L, N
Operating voltage AC 230 V
Y50
DC 0...10 V fan output
M
Reference for DC fan
Y1, Y2
Control output “Valve” AC 230 V (N.O., for normally closed valves),
output for compressor or output for electric heater
B1, S1
(RDF660MB/MM
only)
Multifunctional input for temperature sensor (e.g. QAH11.1) or
potential-free switch
Factory setting:
B1 = H/C changeover (DI)
S1 = Window contact
X1, X2
(RDF660MB
only)
Multifunctional input for temperature sensor (e.g. QAH11.1) or
potential-free switch
Factory setting:
X1 = Window contact
X2 = External temperature sensor
M
Measuring neutral for sensor and switch
REF
RS485 signal / common ground (differential common)
A +
RS485 Modbus connection
B –
RS485 Modbus connection