5 Electrical Installation
ControlCare Panel PC SPC150
10
Hauser
5
Electrical Installation
ControlCare Panel PC SPC150 is an "IT system" in accordance with EN 60950, with supply voltage
of 24 VDC.
5.1
General precautions
Connections for interference free operation:
• The EMC approval requires that signal connections are made with shielded cables and metal
connectors only.
• To ensure optimal electrical shielding, all plugged connections are to be screwed or locked into
position.
• Signal cables may not be laid in the same cable trays as power cables.
• Before commissioning the system, check all cable connections.
• Ensure that the permissible values for voltages and signals are upheld.
Safe discharge of electrical disturbances:
• Connect the Panel PC and cabinet by the shortest possible route to a central earth.
• Ensure good electrical connection between Panel PC and cabinet (low-impedance).
• Use an earth connection conductor of minimum 2.5 mm² (0.1 in
2
) diameter.
Special precautions for 24 VDC devices:
• The panel PC may be connected to a safety extra low voltage (SELV) circuit only.
• The circuit transformer must fulfil the pertinent standards.
