Connecting Requirements - Endress+Hauser Proservo NMS80 Brief Operating Instructions

Proservo NMS80
6.2

Connecting requirements

6.2.1 Cable specification
Terminals
Terminal
Signal and power supply
• Spring terminals (NMx8x-xx1...)
• Screw terminals (NMx8x-xx2...)
Ground terminal in the terminal compartment
Ground terminal at the housing
Power supply line
Standard device cable is sufficient for the power line.
HART communication line
• Standard device cable is sufficient if only the analog signal is used.
• Shielded cable is recommended if using the HART protocol. Observe the grounding concept
of the plant.
Modbus communication line
• Observe the cable conditions from the TIA-485-A, Telecommunications Industry
Association.
• Additional conditions: Use shielded cable.
V1 communication line
• Two wire (twisted pair) screened or un-screened cable
• Resistance in one cable: ≤ 120 Ω
• Capacitance between lines: ≤ 0.3 µF
6.2.2 Supply voltage
85 to 264 V
AC
The supply voltage is also indicated on the nameplate.
Endress+Hauser
Wire cross section
2
0.2 to 2.5 mm (24 to 13 AWG)
max. 2.5 mm 2 (13 AWG)
max. 4 mm 2 (11 AWG)
Electrical connection
37