MANUAL AW AR EBM003 MIN

Electrical connection |
11
8.1 Electrical connection accessories
The following wiring diagrams show the electrical connections between accessories and
fans (with EC motor) or frequency converters (e.g. FRQ, FRQS, FXDM) which can be
controlled with a 0–10V signal. If you are not sure if your fan is equipped with an EC- motor
please see chapter 6 Name plate and type key, page 4.
motor/frequency
converter
Wire- colours of motors with carried out cables: +10V = red 0..10V = yellow GND = blue
MTP 10 MTP 20
MTV—1/10
EC-Basic
8.2 Protecting the motor
Note:
In fans equipped with an EC motor, there is no additional motor protection needed. The motor protection is
integrated in the electronics of the motor.
Important
Damage to motor due to overcurrent, overload or short circiut.
♦ Lead-out temperature monitors must be integrated in the control circuit in such a way that, if a fault
occurs, the motor cannot switch on again automatically after it has cooled down.
♦ Motor lines and temperature monitor lines should be laid separately on principle.
♦ Without thermal protection: Use a motor protection switch!
Note:
Internally connected thermocontact: no external connection feasible or necessary.
Warning
Risk of injury because of sudden start up of the fan.
Thermost switches switch after triggering by excess temperature and closed independently after cooling
off. The fan can start up during this time.
♦ Consider that the impeller can start up suddenly without resetting the fault.
♦ Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 2.
8.3 Variable-speed fans
Warning
Resonant frequencies may result in increased vibration in certain speed ranges. These vibrations may
destroy components.
♦ Only operate the fan outside these speed ranges.
♦ Skip over these speed ranges.
♦ Pass through these speed ranges so quickly that any vibration cannot exceed the admissible resonant
frequency values.
♦ Observe the operating instructions of the frequency converter.
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