Siemens LR 460 Profibus wiring, Power Demands, Bus Termination AC version DC version

Models: LR 460

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cable glands
earth (ground) terminal

4.Tighten the cable gland and check the strain relief (pull and turn).

5.Replace the enclosure cover and hand tighten it. The sealing ring must be clean and undamaged.

6.Tighten the screw on the cover lock.

7. Connect the external earth terminal located

between the cable glands to a ground connection at your vessel. Use a cable with a cross-section of 2.5 mm2 or greater.

mmmmm Wiring

PROFIBUS wiring

Note: PROFIBUS PA is not polarity-sensitive.

Power Demands

To determine how many devices can be connected to a bus line, calculate the combined maximum current consumption of all the connected devices: 10.5 mA for SITRANS LR 460. Allow a current reserve for safety.

Bus Termination

PROFIBUS PA MUST be terminated at both extreme ends of the cable for it to work properly. Please refer to the PROFIBUS PA User and Installation Guidelines (order number 2.092), available from www.profibus.com.

Install in accordance with PROFIBUS PA User and Installation Guidelines (order number 2.092), available from www.profibus.com.

AC version

 

DC version

 

cable clamp

earth

cable clamp

earth

 

terminal

 

terminal

3

4

5

6

7

8

 

1

2

 

 

 

 

 

 

Rated temperature of

L1

L2

 

 

 

 

PROFI-

connection cables must

 

N

 

 

 

 

exceed maximum ambient

 

 

 

 

 

BUS PA

 

temperature by at least 15 K

3

4

5

6

7

8

 

1

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rated temperature of

 

 

 

 

 

 

 

 

PROFI-

connection cables must

19-30 V

 

 

 

 

BUS PA

exceed maximum ambient

 

 

 

 

 

 

 

 

temperature by at least 15 K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7ML19985JM01

SITRANS LR 460 – INSTRUCTION MANUAL

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Siemens LR 460 instruction manual Profibus wiring, Power Demands, Bus Termination AC version DC version