Motor Protection - Helios GigaBox GB EC T120 Notice De Montage Et D'utilisation

Installation and Operating Instructions
m
WARNING
m
WARNING
GigaBox GB EC T120
Basic diagram:
Example 1: Temperature control with additional function
and differential temperature control
Fig .2
or
E.g.
The use of other brands, especially other electronic devices, can lead to malfunctioning and even destruc-
tion of controller and/or fan . Controllers which have not been cleared by Helios are not liable for warranty and
guarantee claims!
Control of several EC-fans with a potentiometer
In order to control several EC-fans via the setpoint input "0-10V", the 10VDC -voltage source must provide the
sum of all setpoint input burden currents.
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Parallel connection of +10VDC supply of several EC-fans is not permitted!
Depending on the type several EC-fans can be controlled with the 10VDC supply from a fan with a potentiometer
(PU/A). For this see the technical data of the control inputs and the wiring diagram SS-1035.
If the power of the EC-supply is not sufficient a customer-supplied sufficient external 10VDC can be used (galvani-
cally separated from the mains).
Alternatively the Helios module "EUR EC" can be used for varied control duties.

1 .17 Motor protection

All units are equipped with energy-saving, maintenance-free EC-internal rotor motors ( protected to IP54, radio sup-
pressed, with ball bearing) with highest efficiency. Suitable for continuous operation S1 and insulation class F. Further-
more, the external motor electronics are equipped with protective features and alarm monitoring. The integrated alarm
monitoring signals an alarm in case of operational or performance problems. The following functions are monitored:
– Blocked rotor
If the rotor becomes blocked, the motor will attempt a restart. The alarm will automatically reset and the motor will start
after troubleshooting. If the maximum number of restarts (5×/60 min.) is exceeded, the motor will be deactivated and
the LED will glow red continuously. The fan can only be restarted by disconnecting the mains voltage for at least 60 s.
– Overtemperature electronics
If the maximum electronics temperature is reached, the electronics will reduce the speed automatically and the LED will
flash red.
– Current monitoring Motor
The motor is protected by the limitation of the output current. If the critical condition is reached, the speed will reduce.
The LED will flash red.
– Phase failure detection
If one or more phases fail, the speed will reduce. An alarm will be displayed via the LED. The LED will flash red.
– Mains undervoltage
If the mains input voltage is too low, the speed will reduce. The error will be displayed via the LED. The LED will flash red.
– Mains overvoltage
If the mains input voltage is too high, the motor will stop. The motor will attempt a restart 5 times. The alarm will
automatically reset and the motor will start after troubleshooting. If the maximum number of restarts (5×/60 min.) is
exceeded, the motor will be deactivated and the LED will glow red continuously. The fan can only be restarted by dis-
connecting the mains voltage for at least 60 s.
The electronics are equipped with a two-colour LED to display different operating conditions.
The LED is located at the bottom of the electronics unit next to the cable inlet for mains connection.
- Continuously green for connected mains voltage
- Flashing green for active Modbus communication
- Continuously red for at least one critical alarm
- Flashing red for at least one non-critical alarm
Critical alarms stop the motor
Non-critical alarms reduce the motor output
Example 2: Differential pressure control and air velocity
Fig .3
or
EC fan
3 3
control
E.g.
EN
EC fan