EVCO EVD120 User Manual
Page 10
10
EVD120
Getting started
1.2
Wiring diagram
Fig. 3 - Wiring diagram of EVD120.
With reference to the wiring diagram:
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port 1 is the port for the serial communication (via RS-485, with MODBUS communication protocol)
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port 2 is the serial port for the communication with the programming key.
Additional information for electrical connection:
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do not operate on the terminal blocks with electrical or pneumatic screwers
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if the instrument has been moved from a cold location to a warm one, the humidity could condense on the inside;
wait about an hour before supplying it
•
test the working power supply voltage, working electrical frequency and working electrical power of the instrument;
they must correspond with the local power supply
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disconnect the local power supply before servicing the instrument
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provide the probes with a protection able to protect them against contacts with metal parts or use insulated probes
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do not use the instrument as safety device
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for repairs and information on the instrument please contact Evco sales network.