EL3000 CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D 93
6 Electrical connections
Safety instructions
Risk of injury due to live parts.
Improper work on the electrical connections can result in electric shock.
• Connect the device only with the power supply switched off.
• Observe the applicable standards and regulations for the electrical connection.
General Notes
Protective lead connection
The protective lead (ground) should be attached to the protective lead connector before any other connection is made.
Risks of a disconnected protective lead
The device can be hazardous if the protective lead is interrupted inside or outside the device or if the protective lead is disconnected.
Model EL3020
Safety instructions
Observe the relevant national safety regulations for installing and operating electric systems.
Power supply connection
(see Connecting the power supply on page 100)
(3-pin grounded instrument connector in accordance with EN 60320-1/C14;
connection cable included in scope of supply)
Digital I/O module
(see Digital I/O module on page 97)
Analog output module
(see Analog output modules on page 96)
Modbus module
(see Modbus®-Module on page 99)
Profibus module
(siehe PROFIBUS®-Module on page 99)
Ethernet 10/100BASE-
T interface (for configuration and software update as
well as for transferring the QAL3 data)
Potential equalization connection (terminal capacity max. 4 mm
2
)
Figure 39: Electrical connections model EL3020
Note
The figure shows all available I/O module types and shows only an example of the assembly with I/O modules (max. 4). The actual
assembly of a delivered gas analyzer may differ from this; it is documented in the device data sheet.
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