Thermo-electronic continuous drive, 3-conductor connection cable. Operating voltage 24 V, driving voltage 0-10 V DC, 100kΩ M 28 x 1,5
HERZ thermal actuators are electrothermal actuating drives for continuous drive control in heating and cooling systems to be installed with an Electronic Control System for Modulating Control. The output signal is then allocated linearly to the effective stroke. HERZ thermal actuators can be used with HERZ valves with M 28 x 1.5 equipped for thermostatic operation
The actuator has an electrically heated, overload-proof expansion element which transfers its stroke direct to the valve. It works silently and requires no maintenance. When the heating element is switched on from cold, the valve (after a warming-up period of about 80 seconds) starts to open, reaching the maximum stroke of 4,5 mm after about 85 seconds. When the drive is regulating, a movement of 1 mm is carried out in about 30 seconds; the stroke is monitored by a Hall sensor. The closing operation is similar (with regard to time) to the opening operation: the expansion element cools down and the valve is closed by spring pressure.