TU517 and TU518 for Communication Interface Modules

  • TU517, terminal unit, screw terminals
  • TU518, terminal unit, spring terminals
  • XC version for use in extreme ambient conditions available (TU518 only)
../_images/a02d121da8db5bf70a3313901eff69dc

The communication interface modules plug into the terminal unit. When properly plugged-in, they are secured with two mechanical locks. All the electrical connections are established via the terminal unit, which allows removal and replacement of the communication interface modules without disturbing the wiring at the terminal unit.

The terminal units TU517 and TU518 are specifically designed for use with AC500/S500 communication interface modules (e. g. CI581-CN, CI541-DP):

  • CANOPEN communication interface modules
  • DEVICENET modules
  • PROFIBUS DP communication interface modules
Screw terminals Spring terminals
Conductor ../_images/cb0f5afaa8bcdff30a3313903f4b6c2f Screwdriver Conductor ../_images/9660db05a8bdfbeb0a3313906e759f77 Screwdriver (opens terminal)

Note

For a detailed description of the mounting, disassembly and electrical connection of the terminal units and the I/O modules, please refer to the “System Assembly, Construction and Connection” chapter AC500 (Standard).

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 V DC
  • Terminal 4.8: process supply voltage UP3 = +24 V DC
  • 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).