Glossary - de Gier GW series Installation Manual

INSTALLATION MANUAL

Glossary

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