The RTD-10 offers several operation modes which can be set using the DIP switches:
- Standard operation mode
- Voltage or Resistance:
- In this mode the RTD-10 can be used to control indoor units with Voltage or electric resistances at the hardwired inputs S1 - S6.
- Controlled parameters are: Setpoint, Fanspeed, Mode, Louvre, On/Off, Remote controller Locking.
- VAM control: Aditionally allows control of damper positions.
- Optional setpoint limiting to 19 - 23 degC.
- Relays: Relay R1 signals either RUN or DEFROST, Relay R2 signals FAULT.
- Simultaneous control with Modbus, remote controller and hardwired inputs (use of any of these controls is optional).
- Note that controlling is done 'externally' with your BMS system (Modbus and/or hardwired inputs). How the external control is implemented does not affect the RTD-10 operation, as long as the input values are correct.
- Therefore, the Standard Operation mode is also suitable for custom algorithms implemented on your BMS system.
- For further information see the attached installation instructions.
- Voltage or Resistance:
- Heating/Cooling System Interlock
- The RTD-10 can be configured to operate in Heating System Interlock mode to prevent A/C cooling or heating operation from conflicting with the operation of an additional system. The RTD-10 can be wired to operate either in Master mode in which the RTD-10 determines when the secondary system operates, or Slave mode in which the secondary system will inhibit the RTD-10 operation. Note that it is only possible to configure the RTD-10 to either of Heating or Cooling interlock, as RTD-10 interlock is configured with switching DIP switches to heating or to cooling.
- Inputs are the same as Resistance Control Mode, with input S4 changed to act as an operation inhibit input signal. Closed circuit inputs on S1 to S3 select additional functions and override the default behaviour of the input.
- For further information see the attached installation instructions.
- Duty/Standby mode
- The RTD-10 can be configured to operate in a duty/standby configuration suitable for IT and Telecoms applications. An RTD-10 master together with up to 7 RTD-10 slaves can be configured to operate in a rotating duty/standby configuration
- For further information see this article RTD-10 Duty/Standby operation mode and the attached installation instructions.
- Custom BMS algorithms
- If your application requirements are not covered by above operation modes (or any other RTD interface) then set the RTD-10 to Standard operation mode or Heating Interlock mode and implement a custom solution on your BMS system.