Proline Promag P 100 Electrical connection
Endress+Hauser 21
7 Electrical connection
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.
7.1
Connection conditions
7.1.1 Required tools
• For cable entries: Use corresponding tools
• For securing clamp (on aluminum housing): Allen screw3 mm
• For securing screw (for stainless steel housing): open-ended wrench 8 mm
• Wire stripper
• When using stranded cables: crimping tool for ferrule
7.1.2 Requirements for connecting cable
The connecting cables provided by the customer must fulfill the following requirements.
Electrical safety
In accordance with applicable federal/national regulations.
Permitted temperature range
• –40 °C (–40 °F) to +80 °C (+176 °F)
• Minimum requirement: cable temperature range ≥ ambient temperature +20 K
Power supply cable
Standard installation cable is sufficient.
Signal cable
Current output
For 4-20 mA HART: Shielded cable recommended. Observe grounding concept of the plant.
Pulse/frequency/switch output
Standard installation cable is sufficient.
PROFIBUS DP
The IEC 61158 standard specifies two types of cable (A and B) for the bus line which can be
used for every transmission rate. Cable type A is recommended.
Cable type A
Characteristic impedance 135 to 165 Ωat a measuring frequency of 3 to 20 MHz
Cable capacitance <30 pF/m
Wire cross-section
>0.34 mm
2
(22
AWG)
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