8 C1900 | CIRCULAR CHART RECORDER | CI/C1900/REC-EN REV. B
4 Electrical connections
WARNING
• The recorder 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 device, within easy reach of the operator and must be
marked clearly as the disconnection for the device. A fuse
must be fitted in accordance with figure (*).
• Remove all power from the supply, relay and any powered
control circuits and high common mode voltages before
accessing or making any connections.
• Use cable appropriate for the current loads: 3-core cable
rated 3A and 90°C (194°F) minimum, that conforms to
either IEC 60227 or IEC 60245. The terminals accept cables
from 0.8 to 2.5 mm2 (18 to 14 AWG).
• The device 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 indicator is used in a manner not specified by the
company, the protection provided by the equipment may
be impaired.
• All equipment connected to the device’s terminals must
comply with local safety standards (IEC 60950,
EN601010-1).
NOTICE
• 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 CR2032
3V lithium cell) must only be carried out by an approved
technician.
Accessing the terminal connections
6
3
4
5
1
2
7
8
Push to
release handle
Pull handle
to release
door…
…and open door
Release
clip
Unplug
module
Remove terminal
block assembly
Swing chart plate forward
Loosen
captive screw
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