Electrical connection
Proline 300 Modbus RS485
14
Hauser
5
Electrical connection
NOTICE
The measuring device does not have an internal circuit breaker.
‣
For this reason, assign the measuring device a switch or power-circuit breaker so that the
power supply line can be easily disconnected from the mains.
‣
Although the measuring device is equipped with a fuse, additional overcurrent protection
(maximum 10 A) should be integrated into the system installation.
5.1
Electrical safety
In accordance with applicable federal/national regulations.
5.2
Connection conditions
5.2.1
Required tools
• For cable entries: Use corresponding tools
• For securing clamp: Allen key 3 mm
• Wire stripper
• When using stranded cables: Crimper for wire end ferrule
• For removing cables from terminal: Flat blade screwdriver ≤ 3 mm (0.12 in)
5.2.2
Requirements for connecting cable
The connecting cables provided by the customer must fulfill the following requirements.
Protective grounding cable for the outer ground terminal
Conductor cross-section ≤2.08 mm
2
(14 AWG)
Grounding impedance must be less than 2 Ω.
Permitted temperature range
• The installation guidelines that apply in the country of installation must be observed.
• The cables must be suitable for the minimum and maximum temperatures to be expected.
Power supply cable (incl. conductor for the inner ground terminal)
Standard installation cable is sufficient.
