S5-115F Manual Installation Guidelines
3.2.5 Centralized Configurations
A central controller connected to as many as three expansion units makes up a centralized con-
figuration. Use only the IM 306 interface module to connect an ER 701-1 mounting rack. If a 463
analog input module is to be plugged into the expansion unit, an ER 701-3 without power supply
module must be used. Please note the following when installing the IM 306:
• Number of EUs: max. 3
• Total cable length: max. 2.5 m (8.2 ft.)
• Slot addressing: variable (in the case of the CC and the EU)
• Power supply to the EUs: max. 2 A*
CR 700-2For
ER 701-2 or
ER 701-3
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705
1
Connecting cable
IM 306 Interface Module
Central Processing Unit
2
Power Supply Module
ER 701-1 or
ER 701-3
ER 701-1 or
ER 701-3
ER 701-1 or
ER 701-3
1 You can also order a 1.25m (4.1 ft.) 705 connecting cable (Order No.: 6ES5 705-0BB20), and use it to mount two EUs
next to each other.
2 Only in the CR 700-2F central controller rack
Figure 3-21. Centralized Configuration with the IM 306 Interface Module
* The EU with the highest current should be located as closely as possible to the CC.
EWA 4NEB 811 6148-02
3-21
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