Servomex 07931001B, Руководство оператора

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© Servomex Group Limited. 2020 07931001B revision 6
To comply with EMC requirements
In order to comply with the relevant EMC protection requirements:
•
Always connect the functional earth (ground) terminal on the base of the receiver
unit (item 7 in Figure 2-4) and transmitter enclosures (item 10 in Figure 2-7) to a
local EMC earth (ground). You can use flexible or solid conductors up to 10mm
2
(7 AWG). Make sure that the conductor is no longer
than 2m (6’ 6.75”
).
•
Make sure that all input and output cables (DC power, mA output, mA input,
Ethernet, relay output) and the cable that connects the transmitter and receiver
units are screened. Terminate the screens at the cable glands
•
The screens of all the cables connected to the analyzer must be terminated
within metal glands.
•
The equipment must not be directly connected to a power supply which supplies
buildings for domestic purposes.
To comply with EMC requirements, make sure that the power supply for the Laser 3
Plus:
•
meets the immunity and emission requirements of the environment in which it is
being operated
•
is not a DC supply network that powers other equipment without the application
of suitable protection against surges or fast transient bursts
To connect the DC supply cable to the Laser 3 Plus:
1. With the power OFF, pass the DC electrical supply cable through a suitable cable
gland fitted to the base of the power / interface compartment of the TU.
2. Connect the DC supply directly to the 7-way main connector.
The DC power cable must have the following specification:
Cable type Screened
Number of cores 2
Rating (temperature) -20 to +75 °C (-4 to 167 °F)
Cable conductors
Insulation thickness
0.2 to 1.5 mm
2
(28 to 14 AWG)
Single core or standard
0.25mm Minimum
Only one conductor may be fitted to each terminal
Approvals Relevant to local requirements
Cable external diameter Within the range specified for the selected cable
gland (opt. power supply selected, 14mm (Max))
Note: Under certain conditions of high ambient temperature a higher temperature rated
cable may be required.