Endress+Hauser Proline Promag L 400 - Connection Conditions

Proline Promag L 400 Electrical connection
Endress+Hauser 25
7.1 Connection conditions
7.1.1 Required tools
• Torque wrench
• For cable entries: Use corresponding tools
• For housing cover: Torx screwdriver or flat-blade screwdriver
• 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 0-20 mA and 4-20 mA: standard installation cable is sufficient.
• For 4-20 mA HART: Shielded cable recommended. Observe grounding concept of the plant.
Pulse/frequency/switch output
Standard installation cable is sufficient.
Status input
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)
Cable type Twisted pairs
Loop resistance ≤110 Ω/km