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HVAC
Installation & Operating Instructions
Page 6
Danger:
Indicates a potentially hazardous
situation other than electrical, which if not
avoided, could result in damage to property.
Within the European Union, all machinery in which this product
is used must comply with Directive 98/37/EC, Safety of Machin-
ery. In particular, the machine manufacturer is responsible for
providing a main switch and ensuring the electrical equipment
complies with EN60204-1.
The level of integrity offered by the Fenner QD:HVAC control input
functions (excluding the ‘Safe Torque Free Input’) – for example
stop/start, forward/reverse and maximum speed, is not sufficient
for use in safety-critical applications without independent channels
of protection. All applications where malfunction could cause injury
or loss of life must be subject to a risk assessment and further
protection provided where needed.
The driven motor can start at power up if the enable input
signal is present.
The STOP function does not remove potentially lethal high
voltages. ISOLATE the drive and wait 10 minutes before starting
any work on it. Never carry out any work on the Drive, Motor or
Motor cable whilst the input power is still applied.
The drive can be programmed to operate the driven motor at
speeds above or below the speed achieved when connecting
the motor directly to the mains supply. Obtain confirmation
from the manufacturers of the motor and the driven machine
about suitability for operation over the intended speed range
prior to machine start up.
Do not activate the automatic fault reset function on any systems
whereby this may cause a potentially dangerous situation.
The Fenner QD:HVAC has an Ingress Protection rating of IP20
or IP55 depending on the model. IP20 units must be installed
in a suitable enclosure.
Fenner QD: HVAC drives are intended for indoor use only.
When mounting the drive, ensure that sufficient cooling is
provided. Do not carry out drilling operations with the drive in
place, dust and swarf from drilling may lead to damage.
The entry of conductive or flammable foreign bodies should be
prevented. Flammable material should not be placed close to
the drive
Relative humidity must be less than 95% (non-condensing).
Ensure that the supply voltage, frequency and no. of phases (1
or 3 phase) correspond to the rating of the drive as delivered.
Never connect the mains power supply to the Output
terminals U, V, W.
Do not install any type of automatic switchgear between the
drive and the motor
Wherever control cabling is close to power cabling, maintain a
minimum separation of 100 mm and arrange crossings at 90
degrees
Ensure that all terminals are tightened to the appropriate
torque setting
Do not attempt to carry out any repair of the Fenner QD:HVAC
In the case of suspected fault or malfunction, contact your
local Fenner distributor.
1. Introduction
1.1 Important Safety Information
Please read the important safety information
below, and all Warning and Caution Information
elsewhere in this manual.
Danger:
Indicates a risk of electric shock,
which, if not avoided, could result in
damage to the equipment and possible
injury or death.
This variable speed drive product (Fenner QD:HVAC) is
intended for professional incorporation into complete
equipment or systems as part of a fixed installation. If installed
incorrectly it may present a safety hazard. The Fenner
QD:HVAC uses high voltages and currents, carries a high level
of stored electrical energy, and is used to control mechanical
plant that may cause injury. Close attention is required to
system design and electrical installation to avoid hazards in
either normal operation or in the event of equipment
malfunction. Only qualified electricians are allowed to install
and maintain this product.
System design, installation, commissioning and maintenance
must be carried out only by personnel who have the necessary
training and experience. They must carefully read this safety
information and the instructions in this Guide and follow all
information regarding transport, storage, installation and use of
the drive, including the specified environmental limitations.
Do not perform any flash test or voltage withstand test on the
drive. Any electrical measurements required should be carried
out with the drive disconnected.
Electric shock hazard! Disconnect and ISOLATE the Fenner
QD:HVAC before attempting any work on it. High voltages are
present at the terminals and within the drive for up to 10
minutes after disconnection of the electrical supply. Always
ensure by using a suitable multimeter that no voltage is present
on any drive power terminals prior to commencing any work.
Where supply to the drive is through a plug and socket
connector, do not disconnect until 10 minutes have elapsed
after turning off the supply.
Ensure correct earthing connections. The earth cable must
be sufficient to carry the maximum supply fault current which
normally will be limited by the fuses or MCB. Suitably rated
fuses or MCB should be fitted in the mains supply to the
drive, according to any local legislation or codes.
Do not carry out any work on the drive control cables whilst
power is applied to the drive or to the external control circuits
.
