Operating instructions
W2E250-HQ52-12
Translation of the original operating instructions
4.2.2 Voltage control
NOTE
Excessive current may occur with speed control using
transformers or electronic voltage regulators (e.g. phase angle
control). In addition, depending on how the unit is installed,
noise and vibration can occur with phase angle control.
Vibrations can lead to bearing damage, which can lead to
premature failure.
Heating-up of the motor when using voltage control must be checked by
the customer following installation in the end device.
4.2.3 Frequency inverter
Please use a frequency converter only after consultation with ebm-papst.
For operation with frequency converters, fit sinusoidal filters that
work on all poles (phase-phase and phase-earth) between the
frequency converter and the motor.
During operation with frequency converters, an all-pole sine
filter protects the motor against high-voltage transients that can
destroy the winding insulation system, and against harmful
bearing currents.
Heating-up of the motor when using a frequency converter must be
checked by the customer following installation in the end device.
4.3 Connection via terminal strip
4.3.1 Connecting cables with terminals
WARNING
Terminals and connections have voltage even with a
unit that is shut off
Electric shock
→ Wait five minutes after disconnecting the voltage at all poles
before opening the device.
;
Guide the wires into the terminals, see
chapter 4.4 Connection screen.
Item no. 14252-5-9970 · ENG · Revision 238441 · Release 2021-10-01 · 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
