Terminal Units TU517 and TU518 for Bus Modules¶
- TU517, Terminal Unit, screw-type terminals
- TU518, Terminal Unit, spring terminals
- XC version for usage in extreme ambient conditions available (TU518 only)
Terminal Unit TU518 for Bus Modules
| Elements of the CANopen:sup:® or DeviceNet™ Terminal Units | |
|---|---|
| 1 | I/O-Bus (10-pole female) to electrically connect the first I/O Terminal Unit |
| 2 | Plug (1x 50-pole and 2x 38-pole) to electrically connect the inserted Bus Module |
| 3 | With a screwdriver, inserted in this place, the Terminal Unit and the adjacent I/O Terminal Unit can be shoved from each other |
| 4 | 2 holes for wall mounting |
| 5 | 10 screw-type or spring terminals for connection with the Bus System |
| 6 | 30 screw-type or spring terminals for signals and power supply voltages (UP and UP3) |
| 7 | DIN rail |
| Sign for XC version | |
| Screw-type terminals (TU517) | Spring terminals (TU518) | ||||
| Conductor | Screwdriver | Conductor | Screwdriver (opens terminal) |
Figure: Types of terminals
The Terminal Units TU517 (with screw-type terminals) and TU518 (with spring terminals) are specifically designed for use with AC500/S500 Bus Modules (e. g. CI581-CN, CI541-DP):
- CANopen:sup:® Bus Modules
- DeviceNet:sup:™Modules
- PROFIBUS:sup:® DP-Bus Modules
The Bus Modules plug into the Terminal Unit. When properly seated, they are secured with two mechanical locks. All the electrical connections are made through the Terminal Unit, which allows removal and replacement of the Bus Modules without disturbing the wiring at the Terminal Unit.
Note
Note: Mounting, disassembling and electrical connection for the Terminal Units and the I/O modules are described in detail in Mounting and disassembling the Terminal Units and the I/O modules Mounting and Disassembling the Terminal Units and the I/O Modules.
The terminals 2.8 and 3.8 as well as 2.9, 3.9 and 4.9 are electrically interconnected within the Terminal Unit and have always the same assignment, independent of the inserted Bus 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 is dependent on the inserted Bus Module (see CANopen:sup:® Bus Modules Overview CANopen® Bus Modules Overview and PROFIBUS® Bus Modules Overview PROFIBUS® Bus Modules Overview).
For usage in extreme ambient conditions (e.g. wider temperature and humidity range), a special XC version of the device is available (TU518 only).