User Manual

7
Siemens Datasheet A6V10889950_i
Smart Infrastructure 2020-01-14
RDF510
T[°C] Room temperature SDH Switching differential “Heating”
W Room temperature setpoint SDC Switching differential “Cooling”
YH Control command “Valve” (heating) YC Control command “Valve” (cooling)
On 4-pipe applications, the thermostat controls two On/Off valves in heating and cooling
mode (P01=4, factory set), or heating/cooling mode (P01=2) by manual changeover.
RDF530
Heating mode Cooling mode
Heating and cooling mode
T[°C] Room temperature SDH Switching differential “Heating”
W Room temperature setpoint SDC Switching differential “cooling”
YH Control command “Valve” (heating) YC Control command “Valve” (cooling)
Xdz Deadzone
On/Off control signal
The valve receives the On command via control output Y14 (Y1 and Y2 on RDF530) when:
1. The acquired room temperature is below the setpoint (for heating mode) or above the
setpoint (for cooling mode), and
2. The control output was not energized for more than the “Minimum output off time”
(factory setting 1 minute)
The valve receives the Off command when:
1. The acquired room temperature is above the setpoint (for heating mode) or below the
setpoint (for cooling mode), and
2. The control output was energized for more than the “Minimum output on time”; (factory
setting 1 minute)