5Installation
66
InstallationInstallation
WARNING!
ELECTRIC SHOCK HAZARD
Disconnect the mains supply
before working on the unit. DO
NOT TOUCH PRESETS, SWITCHES
AND JUMPERS! Always use the
correct insulated adjustment
tools.
6.1
Motor installation
• Foot-mounted motors must be level and
secure.
• Ensure accurate alignment of the motor
shaft and couplings.
• Do not hammer pulleys or couplings
onto the motor shaft.
• Protect the motor from ingress of
foreign matter during installation.
Earthing: Connect the motor to the system
enclosure earth.
6.2
Drive Installation
Requirements during installation and
operation:
HEATSINK AIRFLOW: Optimise the heatsink
airow.
• Avoid vibration.
• Protect the drive from pollutants.
• The ambient operating temperature
must be within -10ºC and +40ºC.
POWER CABLING: Use correctly rated
cable: minimum 600 Vac, 2 x armature
current
FUSING: The drives have built-in line fuses
for wiring protection:
400 6.3 A HRC
800 15 A HRC
1200 15 A HRC
Protect the drive thyristor bridge by tting
external semiconductor fuses. Refer to "7
Typical applications" on page 6.
CONTROL SIGNALS: All control inputs to
these drives are NON-ISOLATED. Do not
connect any of the terminals to earth or
other low voltage. A common HAZARD is
accidental earthing of the external pot and
contact wiring. Avoid running signal cables
close to power cables.
SUPPRESSION: The drives have excellent
noise immunity. However, installations
involving electrical welding or RF induction
heating may require additional lters on the
line and armature terminals. Contactor coils
and sparking contacts may also require
suppression. A 100 Ω resistor in series with
a 0.1 µF capacitor is usually adequate in
these situations. Refer to page 4 for
EMC guidelines.
CAUTION!
EQUIPMENT DAMAGE HAZARD
Reversing systems: do not
transpose the armature
connections until the motor has
stopped, otherwise damage will
occur.
SUPPLY: Please ensure that the supply
selection jumper on the drive matches the
incoming supply. Failure to do this may
result in permanent damage to the drive
unit and will invalidate any warranty.
CAUTION!
EQUIPMENT DAMAGE HAZARD
For frequent stopping, it is
not good practice to rely on
switching the supply off and
on again to stop and start the
drive with the run contact
permanently closed.
This practice may result in an
uncontrolled current pulse for
one half mains cycle under
certain conditions, e.g. main
contact bounce, and might lead
to undesired motor movement
or device damage.
In rapid start-stop systems, use
a spare normally-open contact
on the main supply contactor
in series with T5 and any other
RUN contacts.
