Electrical Connections - ABB SM2000 User Manual

5.3 Electrical Connections – Fig 5.5
Warnings.
• The instrument is not fitted with a switch therefore a disconnecting device such as a switch or circuit breaker conforming
to local safety standards must be fitted to the final installation. It must be fitted in close proximity to 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 (2.5mm
• The instrument conforms to Mains Power Input Insulation Category III. All other inputs and outputs conform to Category II.
• 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).
Notes.
• Always route signal leads and power cables separately, preferably in earthed (grounded) metal conduit.
• It is strongly recommended that screened cable is used for signal inputs and relay connections. Connect the screen to the
earth (ground stud) – see Fig. 5.5.
• Replacement of the internal battery (type CR2450 3V lithium cell) must be carried out by an approved technician only.
5 INSTALLATION...
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