Siemens Welding System ST PCS 7 User Manual

PROFIBUS DP

Siemens ST PCS 7 · November 2007

9

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The Y-link is a bus coupler for transition from a redundant 

PROFIBUS DP master system to a single-channel 

PROFIBUS DP master system. It can be used for connecting de-

vices with only one PROFIBUS DP interface to the redundant 

PROFIBUS DP master system AS 414H/ AS 417H.

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The Y-link comprises:
• Two IM 153-2 High Feature interface modules for extended 

temperature range

• One Y-coupler incl. RS 485 repeater
• One IM 157 (IM/IM) bus module for two IM 153-2 High Feature 

modules, for extended temperature range

• One BM Y-coupler bus module
Evaluation of the Y-Link diagnostics (and hence indirectly of the 

connected DP standard slaves) is supported by driver blocks.
It is recommendable to have a redundant -24 V DC supply for 

the Y-Link, e.g. with two PS 307/PS 305 load power supplies.

B) Subject to export regulations: AL: N, ECCN: EAR99H

Fault-tolerant 
automation system

Connection of non-redundant 
PROFIBUS DP devices to 
redundant PROFIBUS DP 

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Order No.

For connection of devices with 

only one PROFIBUS DP interface 

to a fault-tolerant automation sys-

tem, comprising:
• 2 IM 153-2 High Feature inter-

face modules

• 1 Y-coupler
• 1 BM IM 157 bus module (IM/IM)
• 1 BM Y-coupler bus module

B)

Including connection assembly; 

120/230 V AC; 24 V DC
• 2 A; 50 mm wide

• 5 A; 80 mm wide

• 5 A, extended temperature 

range; 80 mm wide

• 10 A, 200 mm wide

24/48/60/110 V DC; 24 V DC
• 2 A, extended temperature 

range; 80 mm wide

© Siemens AG 2007