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S4D630-AR01-01
4.2.3 Voltage control
With speed control using transformers or electronic voltage
regulators (e.g. phase control), excessive current may occur.
In addition, depending on how the device is installed, noises
can occur with phase control.
4.2.4 Variable frequency drive
Please use a variable frequency drive only after consultation with ebm-
papst.
When a variable frequency drive is used for speed adjustment, the
maximum safe operating speed (see 3.2 Nominal data) may not be
exceeded.
For operation with variable frequency drives, install sinusoidal
filters that work on all poles (phase-phase and phase-ground)
between the drive and the motor.
During operation with variable frequency drives, an all-pole
sine filter protects the motor against high-voltage transients that
can destroy the coil insulation system, and against harmful
bearing currents.
Heating of the motor due to use of a variable frequency drive must be
checked in the application by the customer.
4.3 Connection in terminal box
4.3.1 Preparing cables for connection
Only strip the cable as far as necessary, ensuring that the cable gland is
sealed and there is no strain on the connections. For tightening torques,
see Chapter 3.1 Product drawing.
NOTE
Tightness and strain relief are dependent on the cable
used.
→ This must be checked by the user.
4.3.2 Connecting wires to terminals
; Remove the cap from the cable gland.
Only remove caps where cables are fed in.
; Route the wire(s) (not included in scope of delivery) into the terminal
box.
; First connect the "PE" (protective earth).
; Connect the wires to the corresponding terminals.
; Connect the thermal overload protector (TOP).
Use a screwdriver to do so.
When connecting, ensure that no wire ends fan out.
The terminal strip is equipped with a penetration guard.
; Insert the leads until they meet resistance.
; Seal the terminal box.
Item no. 10103-5-9970 · ENU · Change 89187 · Approved 2016-04-15 · Page 7 / 11
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · info1@de.ebmpapst.com · www.ebmpapst.com
Operating instructions
4.3.3 Cable routing
Water must be prevented from reaching the cable gland along the cable.
Fans installed lying flat
Make sure the cable is routed in a U-shaped loop.
Fig. 2: Fan installed lying flat, cable routed in a U-shaped loop.
Fans installed upright
When routing the cable, make sure that the cable glands are located at
the bottom. The cables must always be routed downward.
Fig. 3: Cable routing for fans installed upright.
4.3.4 Motor protection
The motors are equipped with thermal overload protectors to protect the
devices.
Check to make sure that the thermal overload protector is correctly
connected before each operation.
CAUTION
Voltage
The device is a built-in component and has no disconnecting
switch.
→ Connect the device to a suitable tripping unit.
→ Only connect the device to circuits that can be switched
off with an all-pole disconnection switch.
→ When working on the device, secure the system/
machine in which the device is installed so as to prevent it
from being switched back on.
NOTE
Lack of motor protection
Without motor protection, the motor can overheat and suffer
damage.
→ Connect the thermal overload protector installed in the
winding.
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