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Device Specifications
Communication Interface Modules (S500) > PROFIBUS
1.7.5.1.3
Electrical Connection
The PROFIBUS DP bus module CI541-DP is plugged on the I/O terminal units TU509
Ä Chapter 1.4.2 "TU509 and TU510 for Communication Interface Modules" on page 149 or
TU510
and accordingly TU517
ules" on page 158 or TU518
Modules" on page 158. Properly seat the module and press until it locks in place. The terminal
unit is mounted on a DIN rail or with 2 screws plus the additional accessory for wall mounting
(TA526
The electrical connection of the I/O channels is carried out using the 30 terminals of the I/O ter-
minal unit. I/O modules can be replaced without re-wiring the terminal units.
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 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
Possibilities of Connection
Connection on Terminal Units TU509 or TU510
The assignment of the 9-pole female D-SUB connector for the PROFIBUS signals:
944
For a detailed description of the mounting, disassembly and electrical connec-
tion of the module, please refer to the System Assembly, Construction and Con-
Ä Chapter 2.6 "AC500 (Standard)" on page 1248.
nection chapter
Ä Chapter 1.4.2 "TU509 and TU510 for Communication Interface Modules" on page 149
Ä Chapter 1.4.4 "TU517 and TU518 for Communication Interface Mod-
Ä Chapter 1.4.4 "TU517 and TU518 for Communication Interface
Ä Chapter 1.8.2.4 "TA526 - Wall Mounting Accessory" on page 1152).
With a separate UP3 power supply, the digital outputs can be switched off exter-
nally. This way, an emergency-off functionality can be realized.
Do not connect any voltages externally to digital outputs!
Reason: Externally voltages at an output or several outputs may cause that
other outputs are supplied through that voltage instead of voltage UP3 (reverse
voltage). This ist not intended usage.
CAUTION!
Risk of malfunction by not intended usage!
If the function cut off of the digital outputs should be used by deactivation of the
supply voltage UP3, be sure that no external voltage is conncted at the outputs
DO0..DO7.
3ADR010121, 13, en_US
2019/04/17
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