Servo 3 for KNX

Features

• Electric motor-driven servo with one binary input (zero-voltage) for mounting on thermostat valve bases (recommended: Heimeier) for controlling heating or cooling systems.
• Suitable for room temperature control, e.g. on radiators, convector heaters or heating circuit distributors on floor heating, etc.
• Screwed onto valve head.
• M30 × 1.5 mm connection.
• Integrated bus coupler. The servo is a proportional drive and can be directly integrated into the KNX system (without additional bus coupler).
• Supply voltage is drawn from the KNX system.
• Integrated temperature sensor.
• Integrated room temperature controller.
• Mechanical indicator for valve travel.
• Automatic detection of valve travel.
• One input. This can be used as a binary input or for connecting an external temperature sensor with the following functions:
  Switching, dimming, blind, as dimming value transmitter, as brightness value transmitter, as light scene auxiliary unit with and without memory function, as remote temperature sensor or as temperature limiter for underfloor heating.
• Switching function: two independent switching objects are available for each input (switching commands can parameterised individually), command for leading and trailing edge can be set independently (ON, OFF, CHANGE, no reaction).
• Dimming function: Single and double-surface operation, time between dimming and switching, telegram repetition and stop-telegram transmission possible.
• Blind function: Command can be set with rising edge (no function, UP, DOWN, CHANGE), operating concept can be configured (Step - Move - Step or Move - Step), time between short and long-term operation can be set (only with Step - Move - Step), slat adjustment time can be set.
• Value transmitter function: Edge (button as NO contact, button as NC contact, switch) and value with edge can be configured, value adjustment by pressing and holding a button for value transmitters possible.
• Lighting scenario auxiliary unit with or without memory function.
• Can be used in a heating circuit distributor.
• Protection against jammed valves
• Corrected variable (1 bit or 1 byte).
• Cyclical monitoring of the corrected variable.
• Fault message object for drive faults.
• Emergency operation via internal temperature sensor.
• 2 forced settings or 1 forced setting and 1 limit value object can be set.
• Minimum and maximum variable limit can be set.

Technical data

Notes

• With the default setting, the servo fits on Heimeier valve bases. Use an adapter for valve bases of other manufacturers.

Dimensions in mm

Additional figures available in the media database