De Gier B.V., Westlandseweg 9, 2291 PG WATERINGEN, THE NETHERLANDS, Tel. +31 (0)174 292089, Fax +31 (0)174 295644, E-mail: [email protected]
www.degier.eu
Version 1 – 2014 / 06 / 11
22
INSTALLATION MANUAL
Glossary
Glossary
S3-30%
Duty cycle as defined in IEC 60034-1: intermittent periodic operation with the
motor active at most 30% of the time.
AC
Alternating Current.
Protective cover
Cover to prevent direct contact between people, rain, dust and the motor
gearbox.
Axial
In the length direction of the shaft.
Tightening torque [Nm]
Torque to which a bolted joint has to be tightened in units of in Newton-metre.
dB(A)
Intensity of sound, expressed in decibels.
Operating hours counter
A counter used to register the number of actual operating hours of the drive unit.
Bi-metal
Temperature-sensitive protective switch.
Flexible coupling
A coupling which is able to compensate for alignment errors, for instance a
chain coupling, universal joint or cardan shaft.
DC
Direct Current.
Dead-man vigilance system
Emergency switch actuated by a pull cord spanned along the entire length of the
system.
Electrical ratings
The voltage, current and power values for which an electric motor is designed
and which are shown on rating plate of the motor.
Hazard area
The area below or directly around the driven or moving parts.
Suspended loads
Machinery or machine parts which are suspended on steel cables or hoisting
slings and not otherwise supported.
Higher-level function
An overriding or governing switch condition, depending on the structure of the
system, such as a rain signal that causes automatic operation of the motor
gearbox.
Torque [Nm]
A measure of the rotational effect of a force. The magnitude of the torque is
equal to the force times the radius (arm) and is expressed in Newton-metres.
Linear
Straight line.
Mechanical brake
Electromagnetically actuated brake at the rear of the electric motor. Loss of
power causes the brake to be applied; restoring power releases the brake.
Motor gearbox
An (electric) motor with a gear unit to reduce its shaft speed.
Radial
A force perpendicular to the shaft.
Relay
A switch operated by an electromagnet.
Residual risks
Risks which cannot reasonably be avoided (inherent in the product).
Strap
Hoisting equipment.
rpm
Revolutions per minute.
VAC
AC voltage.
VDC
DC voltage.
Fall-arrest protection brake
A protective device which stops descending loads if they are moving too fast.
Normally closed (NC) contact An electrical contact that opens when the switch is actuated.
Viscosity
Fluidity or thickness of a liquid.
Self-braking
The gear unit can only be driven by the motor; the output shaft cannot be moved
by the load.
