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TU520-ETH, 2 RJ45 interfaces for connection to PROFINET network, 3 removable connectors for bus systems
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TU520-ETH-XC, 2 RJ45 interfaces for connection to PROFINET network, 3 removable connectors for bus systems, XC version
1
I/O bus (10 pins, female) to connect the first terminal unit
2a
Plug (2 25 pins) to connect the inserted PROFINET communication interface module
2b
Plug (3 19 pins) to connect the inserted PROFINET communication interface module
3
With a screwdriver, inserted in this place, the PROFINET I/O terminal unit and the adjacent I/O terminal unit can be shoved from each other
4
2 holes for wall mounting
5
3 removable connectors to connect the subordinated bus systems
6
2 RJ45 interfaces with indication LEDs for connection with the PROFINET network
7
6 spring terminals for process supply voltage (UP)
8
DIN rail
The PROFINET communication interface modules plug into the PROFINET IO terminal unit. When properly plugged-in, they are secured with two mechanical locks. All the connections are established via the PROFINET IO terminal unit, which allows removal and replacement of the communication interface modules without disturbing the wiring at the PROFINET IO terminal unit.
The PROFINET IO terminal unit TU520-ETH are specifically designed for use with AC500/S500 PROFINET communication interface modules (e. g. CI504-PNIO, CI506-PNIO).
XC version
XC = eXtreme Conditions
Extreme conditions
Extreme conditions
Terminal units for use in extreme ambient conditions have no 
sign for XC version.
The figure 4 in the Part no. 1SAP4... (label) identifies the XC version.
NOTICE
Risk of corrosion!
Unused connectors and slots may corrode if XC devices are used in salt-mist environments.
Protect unused connectors and slots with TA535 protective caps for XC devices⮫ “TA535 - Protective caps for XC devices”.
Spring terminals
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Conductor |
 |
Screwdriver (opens terminal) |
The terminals 1.0, 2.0, 3.0, 1.1, 2.1 and 3.1 are electrically interconnected within the PROFINET IO terminal unit.
The terminals always have the same assignment, irrespective of the inserted PROFINET communication interface module:
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Terminals 1.0, 2.0 and 3.0: process supply voltage UP = +24 V DC
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Terminals 1.1, 2.1 and 3.1: process supply voltage ZP = 0 V
The assignment of the bus system terminals depends on the inserted PROFINET communication interface module (see Ethernet communication interface modules overview).