Electrical Connections - ABB SM500F User Manual

Field Mountable Videographic Recorder
SM500F

2.3 Electrical Connections

Warning.
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. A fuse must be fitted in
accordance with Fig. 2.10.
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: 3-core cable rated 3 A and 90 °C (194 °F) minimum,
that conform to either IEC 60227 or IEC 60245. The terminals accept cables from 0.8 to 2.5 mm
(18 to 14 AWG).
The instrument conforms to Installation Category II of IEC 61010.
All connections to secondary circuits must have basic insulation.
After installation, there must be no access to live parts, for example, 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.
Always route signal leads and power cables separately, preferably in earthed (grounded) metal
conduit.
Use screened cable for signal inputs and relay connections.
Replacement of the internal battery (type Varta CR2025 3V lithium cell) must be carried out by an
approved technician only.
12
2 Installation
IM/SM500F Issue 10.1
2