Copyright Micropelt
General Description MLR003R
–
7
Unsuccessful radio communication attempts are reported by status bit RCE. After 6 consecutive
unsuccessful radio communication attempts (acknowledge from the gateway), the actuator
automatically switches to the safety mode and safety values as specified by the user. In this situation, the
radio communication period is increased to once every hour.
The actuator generates the required electrical energy for operation (motor, sensors, and radio
communication) by means of a built-in thermoelectric generator (TEG) and therefore operates
maintenance-free. It harvests energy from the temperature difference between the valve body heat and
ambient temperature (usually room temperature). An additional energy source such as a primary battery
or external power supply is not required. The internal energy storage device is charged upon delivery, so
that sufficient energy is available for installation.
