Cables And Electrical Entries (Power Supply And Communication) - Sony Multiscan CPD-1304S Service Manual

5
The housing must be grounded to the local ground. Use the existing ground connection (see
figure 5.4) at the bottom of the housing. It is near to the calibration gas inlet and the main PE
terminal.
The permitted crosssection for grounding purposes is at least 6 mm² (max. 10 mm²) copper cable.
The ground connection is already equipped and is to be used in the predetermined manner
without modification. The tightening torque of the connection must not exceed 3.5 Nm.
The shields, in the power cables and communication cables are connected according to local
conditions and regulations. A functional grounding point (FE) in the connection box can be used.
See figure 5.3. Make sure always to connect to the same grounding potential.
If the Q2 is mounted on a metal frame, this frame must be connected to the local ground too.
Figure 5.3: Connection box with functional grounding

5.4.2 Cables and electrical entries (power supply and communication)

The temperature on the connection box may rise to a temperature 10°C
(10K) above the ambient temperature. Make sure cable entries and cables
are suitable for this increase at the ambient conditions on site.
All electrical interfaces are located in a connection box with galvanic isolation. The cables or wires
are pass through cable fittings at the top of the device. Cables must be shielded. When selecting
the electrical entries, you must comply with the particular manufacturer's instructions. Choose an
appropriate type depending on the location and request for that device.
Cables, electrical entries and blanking plugs are non Elster standard
products that are required to operate the Q2. It is recommended to keep the
data cables or wires separated from the power cables or wires.
Observe also the information in chapter 4.2.2
The cables are connected to the terminal board in the connection box via the plugs on the edge
of the board. The local / national installation standards (e.g. EN 60079-14 for Europe) must be
considered. Attention must be paid to ensure that the degree of protection IP 64 is maintained,
i.e. the protection class of the used electrical entries, stopping plugs and adapters must be equal
to that of the device itself or even better (higher). Most systems require only 2 electrical entries,
one for the data transfer cable and one for the power supply (24 V DC).
Remaining positions may be used for additional signal cables.
Unused openings must be fitted with suitable certified blanking plugs.
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Figure 5.4: Protective earth grounding of housing
G a s Q u a l i t y A n a l y z e r
Transport, storage, installation
GasLab Q2