13-3
Operator Panel OP3
Edition 11/99
13.2 Electrical Installation
The OP3 requires electrical connections to the
• power supply,
• configuration computer (PC or programming unit),
• PLC.
The electrical connection for the power supply is necessary only if the OP3 is
not connected through the MPI interface to a SIMATIC S7 PLC. The
electrical connection to the configuration computer is required only for
transferring the configuration to the OP3.
The SIMATIC S7 controller is connected through the MPI interface
integrated in the OP3. Coupling to the configuration computer is established
either through the MPI interface, with downloading via the MPI, or through
the RS232 interface, with serial downloading.
Requirements for interference-free operation are EMC-compatible hardware
design of the PLC and the use of interference-proof cables.
The guidelines for interference-proof design of your PLC apply similarly to
the design and installation of the OP3.
!
Caution
• Only screened cables are authorized for all signal connections.
• All connectors should be screwed or locked.
• Signal lines must not be run in the same shaft as power cables.
Electrical
connections
EMC-compatible
design
Installation
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