Manual: PCD7.D61xx series│Document 26 / 844│Version E 1│30.04.2006
Saia-Burgess
Controls Ltd.
Earthing concept / Installation / Switch-on
Commissioning
3-2
3
3.2
Earthing concept
To ensure that electrical faults are dealt with safely, the following points should be
observed:
●
Connect device and switching cabinet by the shortest route to a central
earthing point.
●
Ensure lowest impedance possible in connection between device and switching
cabinet.
●
All data cables connected to the device should use shielded lines.
●
The shields should be earthed at both ends. There must be a low-resistance
connection between the linked systems. High equalising currents across the
shield resulting from potential differences must be avoided.
●
Earth connection to use green/yellow cable with min. 4 mm² cross-section.
3.3
Installation
The device should be installed in an RF shielded housing or a metal switching
cabinet.
Adequate ventilation must be provided. To ensure that the heat generated in the
device can be dissipated, a 100 mm space must be kept clear around the unit.
The unit must be disconnected from the power supply for installation and de-
installation.
Only the assembly components supplied should be used to mount the unit in the
housing. The type and number of assembly components is dependent on the device
(see Technical Details).
The dimensions specified for the holes in the front plate must be adhered to, to
maintain IP 65 (front) protection (see Technical Data).
Failure to observe the above instructions could cause damage to the device.
3.4
Switch-on
Start-up: The PCD7.D61xx units boot up and load the operating system
independently.
