ABB AC500 PLC Hardware Manual page 160

Device Specifications
Terminal Units (AC500 Standard) > TU517 and TU518 for Communication Interface Modules
XC Version XC = eXtreme Conditions
Terminals
Screw terminals
Conductor
The terminals 2.8, 3.8, 2.9, 3.9 and 4.9 are electrically interconnected within the terminal unit
and always have the same assignment, irrespective of the inserted communication interface
module:
● Terminals 2.8 and 3.8: process supply voltage UP = +24 VDC
● Terminal 4.8: process supply voltage UP3 = +24 VDC
● Terminals 2.9, 3.9 and 4.9: process supply voltage ZP = 0 V
The assignment of the other terminals depends on the inserted communication interface module
(see communication interface modules for CANopen and PROFIBUS).
160
Extreme conditions
Terminal units for use in extreme ambient conditions have no
XC version.
The figure 4 in the Part No. 1SAP4... (label) identifies the XC version.
Screwdriver
1.5
1.6
1.7
1.8
1.9
For information about wiring specifications see
the Terminal Unit" on page 1274.
For a detailed description of the mounting, disassembly and electrical connec-
tion of the terminal units and the I/O modules, please refer to the "System
Assembly, Construction and Connection" chapter
and Demounting" on page 1261.
3ADR010121, 13, en_US
Spring terminals
Conductor
1.5
1.6
1.7
1.8
1.9
Ä Chapter 2.6.4.3 "Terminals at
Ä Chapter 2.6.3 "Mounting
sign for
Screwdriver
(opens ter-
minal)
2019/04/17