4.1 ELECTRICAL INSTALLATION
4.1.1 General information
To comply with Underwriter Laboratories (UL) and Canadian Standards Association (CSA) certification,
route signal leads and power cables in earthed (grounded), flexible metal conduit. Use the protective
ground stud at the back of recorder; (NOT the terminal module ground connection) to ground the
flexible metal conduit.
• Instruments not fitted with the optional internal on/off switch and fuse must have a
disconnecting device such as a switch or circuit breaker conforming to local safety standards
fitted to the final installation. It must be fitted near the instrument within easy reach of the
operator and must be marked clearly as the disconnection device for the instrument.
• Remove all power from supply, relay and any powered control circuits and high common
mode voltages before accessing or making any connections.
• Use cable appropriate for the load currents. The terminals accept cables up to 14AWG
(2.5mm1).
• The instrument and all inputs and outputs conform to Mains Power Input Insulation Category
ll.
• All connections to secondary circuits must have basic insulation. After installation, there must
be no access to live parts e.g. terminals.
• Terminals for external circuits are for use only with equipment with no accessible live parts,
• If the instrument is used in a manner not specified by the Company, the protection provided
by the equipment may be impaired.
• All equipment connected to the instrument's terminals must comply with local safety
standards (IEC 60950, EN601010-1).
➢ NOTE:
To ensure maximum recorder performance, proper wiring installation practices must be followed.
Failure to do so can result in a range of problems, from loss of configuration to component failure,
caused by transmitted or radiated electrical noise. Proper consideration must be given to local noise
sources and appropriate suppression steps taken to minimize any potential problems. Among the
most common sources of noise are: Relays, SCRs, valve solenoids, electric motors, power line
disturbance, wire-to-wire coupling, electrostatic discharge (ESD) and radio-frequency interference
(RFI).
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