Connection Of The Signal Cables - Siemens 7MB2531 Operating Instructions Manual

Continuous gas analysis
Table of Contents

Advertisement

Connecting
4.3 Electrical connections
• Identify the intrinsically-safe lines and route them separately from the non-intrinsically-safe
lines. Observe the minimum distances required when doing this.
• Connect the power and signal cables according to the terminal wiring diagrams of the
devices to be connected (see the associated operating instructions or product manuals).
• Be particularly careful with the cable inlets (cable glands). Use sealing rings corresponding
to the cable diameters for the cable glands.
Cable diameter ranges and torques M for the screwed glands:
– M 20 power cable/RS485: ∅ Cable: 7 ... 12 mm; M = 3.8 ± 0.2 Nm
– M 20 signal cables:
4.3.1

Connection of the signal cables

NOTICE
Incorrect power supply
The 24 V/1 A power supply must be a power-limited safety extra-low voltage with safe electrical
isolation (SELV).
Only connect the signal lines to devices which also have reliable electric isolation from their
power supply.
32
∅ Cable: 10 ... 14 mm; M = 3.8 ± 0.2 Nm
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Compact Operating Instructions, 09/2018, A5E45779389002-01

Advertisement

Table of Contents
loading

Table of Contents