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Installation and Operating Instructions
EN
CHAPTER 2
GENERAL OPERATING
INSTRUCTIONS
m
WARNING
m
CAUTION
m
CAUTION
Axial high-performance fans EC – HQ EC / HW EC / HRF EC
CE = CE mark
y Production code / year of manufacture
u Voltage range [V]
i Switching mode
The EC fan can be clearly identified by the ref. no., SNR (serial number) and PC (production code) numbers!
1�14 Product service life
This unit is designed for a product service life of at least 40,000 h, in case of S1 operation with maximum power in the
maximum permissible ambient temperature
Technical data
Voltage
Max. air flow temp.
Protection class
2�1 Personnel qualification
m The electrical connection and commissioning of the EC fan must only be carried out by qualified electricians�
– Installation, servicing and maintenance work must only be carried out by authorised specialists (industrial mechanics,
mechatronics engineers, metal workers or persons with comparable training).
– EC axial high-performance fans can be used by children over the age of 8 as well as persons with physical, sensory, or
mental disabilities or lack of experience and knowledge, if they are supervised or instructed with regard to the safe use of
the unit and they understand the resulting risks. Children must not play with the unit. Cleaning or user maintenance must
not be carried out by unsupervised children.
2�2 Protection against contact
– The operator is responsible for the on-site adherence to standard safety distances (cf. EN ISO 13857) on the intake and
discharge side of the EC fan.
– HQ EC, HW EC fan types are delivered with a intake-side protection guard (pursuant to EN 60335-1 and EN ISO 13857)
as standard. HRF EC fan types are delivered without a protection guard as standard. If protection guards are (additionally)
required, they can be ordered as accessories.
– EC axial high-performance fans, which are protected by their installation method (e.g. installation in ventilation ducts or
closed assemblies), do not require protection guards if the plant provides the necessary level of safety.
2�3 Direction of flow and rotation
The EC axial high-performance series have a fixed motor rotation direction which is marked on the units by an arrow (no
reversing mode!).
During installation and before commissioning, the desired air flow direction must be respected!
2�4 Operating modes
– Default condition
With regard to the EC fan types HQ/HW/HRF EC 250 A, 315 A, 355 A, the operating mode
"Constant torque". is set in the default condition. The integrated electronics software regulates the torque of the motor
independent of the motor speed in this operating mode.
On the basis of the constant torque, impulse-type disturbances in the air flow can lead to strong speed fluc-
tuations� If the air resistance is reduced, the speed increases, and if the air resistance increases, the speed
reduces accordingly�
With regard to the EC fans HQ/HW/HRF EC 355 B, 400A, B, 450 A, B, 500 A, B, 560, 630, 710, the operating mode
"Constant torque" is set in the default condition. The integrated electronics software regulates the torque of the motor
independent of the current.
2�5 Power control
– Power control with speed potentiometer PU/A
Continuous and direct control or set value input of EC fans with potentiometer input. Additionally equipped with an
enabling switch and LED display for the operating condition (depending on the features of the fan type). The poten-
tiometer is directly connected to the potentiometer input of the fan control system. In this respect, the PU/A has a
potentiometer supply of e.g. 10 V DC and a set value input of 0–10 V DC.
Pictorial schematic:
Example: Stepless speed control
Fig�3
Stepless speed
setting with potenti-
ometer
Release
Operating conditi-
on/fault indicator
l Measurement category for the ErP valuation
; Level of efficiency BEP
2) Integrated speed control (VSD integrated)
Series 250 A to 355 A
200-240 V / 1 Ph / 50/60 Hz
-30 °C to +40 °C
EC fan
depends on fan size
4
Series 355 B to 500 B
200-277 V / 1 ph / 50/60 Hz
IP54
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