ZIEHL-ABEGG Acontrol PDE-6, Operating Instructions Manual

Page: 13 / 29

5.4 Motor connection
The motor is connected at terminals U1 and U2. Several motors can be connected to the
device.
Attention!
The maximum total control current (speci
fi
ed for electronic voltage regulation) for all
motors may not exceed the device ’ s rated current.
If the maximum control current for electronic voltage regulation is not known, a
supplementary 20 % of the rated motor current must be allowed for.
When controlling motors from other manufacturers, the controllability and the maximum
current for electronic voltage regulation should be requested from the manufacturer.
Information
•
It is recommended that a separate motor protection unit be foreseen for each fan.
•
For motors with thermistors “ TB ” e.g. type S-ET10.
5.4.1 Running noise
When controlling ventilators using electronic voltage regulators, motor noise can occur
(due to the system), which can be troublesome (Phase cutting = series
“ P... ” ).
On fast running ventilators with a high level of air noise, this noise is relatively low. On
slow running ventilators with a low level of air noise, this noise may be dominant in the
lower speed range due to the occurrence of resonance.
For systems where noise is critical, we recommend using our
Fcontrol series frequency
converters with integrated sinusoidal fi lter.
5.5 Motor protection
Attention!
Motor thermostats cannot be connected to these controller. I.e. a separate motor
protection is required. We cannot under any circumstances accept liability for damage to
the motors which do not have the required motor protection. It is recommended that
every fan is equipped with a separate motor protection unit e.g. type S-ET10 (see
connection diagram)!
5.6 Signal or sensor connection (E1 = Analog In 1)
The unit has one-analog input: terminals “ E1 ” / “ GND ” (Analog In 1).
The connection is independent of the programmed operating mode and from the sensor
signal employed.
The internal jumpers must be placed in correct position depending on input signal.
Factory setting 0 - 10 V.
•
When connecting active sensors attention must be paid to correct polarity, a 24 V DC
power supply is integrated.
•
For sensors in two-wire-technology (4 - 20 mA signal), the connection is made on the
“ +24 V ” and “ E1 ” ( “ GND ” terminal is omitted).
Operating Instructions Acontrol PDE-6 / PDE-10 Electrical installation
L-BAL-E048-GB 1921 Index 005 Part.-No.
13/29