This variable speed drive product 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 SRC 311 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 SRC 311, including the specified
environmental limitations.
Do not perform any flash test or voltage withstand test on the SRC 311. Any electrical
measurements required should be carried out with the SRC 311 disconnected.
Electric shock hazard! Disconnect and ISOLATE the SRC 311 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.
Introduction and Safety
4 SRC 311 - SmartRun
™
User guide
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