ARI Armaturen ARI-PREMIO Plus EN - Manual (Page 31)

0040501004 5010 Page 31
Operating and installation instructions
Thrust actuator ARI-PREMIO-Plus
5.6.4 Temperature management
The aim of the temperature management function is to prevent internal overheating. The
temperature of the printed circuit board is measured close to the controller for this purpose
and divided into the following categories:
"CDF" is the cyclic duty factor of the actuator motor. It describes the ratio of motor running
time to motor running time plus idle time.
Temperature management is only active in Economy mode. Step 3 is also effective if
Economy mode is deactivated.
5.6.5 Condensation on the printed circuit board
A condensation sensor is mounted on the printed circuit board of the basic module. If
condensation occurs, a 4 W board heater is switched on as long as the motor is idle. The
power resistors installed in the heater are soldered onto the board.
The function is deactivated if the printed circuit board heats up to more than 60°C.
5.6.6 "Yin" signal failure
With analogue control, an interrupted control signal is detected by the electronics (both 4 to
20 mA and 0 to 10 V). If the control signal fails for longer than ten seconds, the red
"Failure" LED is set and the actuator is switched to "Stop".
As soon as a control signal is detected at the input again for longer than ten seconds, the
red LED goes out and the actuator returns to the desired position.
Step Temperature Response
1 > 80°C CDF = 80%
2 > 90°C CDF = 50%
3 > 110°C CDF = 20%, yellow LED lights up
(out of specification)