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S4D300-AP28-30
4. CONNECTION AND START-UP
4.1 Connecting the mechanical system
CAUTION
Cutting and crushing hazard when removing the fan
from the packaging
→ Carefully lift the device out of its packaging, only touching
the guard grille. Make sure to avoid any shock.
→ Wear safety shoes and cut-resistant safety gloves.
⇒ Install the device according to your application.
4.2 Connecting the electrical system
DANGER
Electric voltage on the device
Electric shock
→ Always install a protective earth.
→ Check the protective earth.
CAUTION
Electrical voltage
The fan is a built-in component and features no electrically
isolating switch.
→ Only connect the fan to circuits that can be switched off with
an all-pole separating switch.
→ When working on the fan, you must switch off the
installation/machine in which the fan is installed and secure it
from being switched on again.
NOTE
Water penetration into leads or wires
Water enters at the cable end on the customers side and can
damage the device.
→ ⇒ Make sure that the cable end is connected in a dry
environment.
Connect the device only to circuits that can be switched off
using an all-pole disconnecting switch.
4.2.1 Prerequisites
⇒ Check whether the data on the type plate agree with the connection
data.
⇒ Before connecting the device, ensure that the supply voltage matches
the operating voltage of the device.
⇒ Only use cables designed for current according to the type plate.
4.2.2 Voltage control
With open loop speed control using transformers or electronic
voltage regulators (e.g. phase angle control), excessive current
may occur.
In addition, noises can occur with phase angle control
depending on the mounting situation.
Item no.: 10561-5-9970 · Revision status: KM68158 · Print-out on 27.04.10 · Created by Y. Uhlmann (VM-TDO) · Page 6 of 9
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · 74673 Mulfingen · Phone: +49 7938 81-0 · Fax: +49 7938 81-110 · www.ebmpapst.com · info1@de.ebmpapst.com
Operating instructions
4.2.3 Frequency inverter
4.3 Connection of the cables
External leads are brought out of device.
⇒ Connect the lines according to your application. When doing so,
observe chapter 4.4 Connection diagram.
4.3.1 Motor protection
Fit sinusoidal filters that work on all poles (live-live and live-
earth) between the frequency inverter and the motor for
operation with frequency inverters.
Depending on how the device is installed, noises may occur.
WARNING
Device without locked-rotor protection
The device is delivered without any automatically functioning
protection from improper operation (locked-rotor protection). The
device can become hot and burn.
→ For the version without TOP, install an additional, suitable
motor protection switch.
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