Installation Guidelines S5-115F Manual
3.2.6 Distributed Configurations
A central controller connected to expansion units installed over a maximum distance of 600 m
(approx. 2000 ft.) makes up a distributed configuration. A distributed configuration is described
on the pages that follow.
Please note the following:
• Each ER 701-2 expansion rack, or ER 701-3 in a distributed configuration, requires a PS 951
power supply module and an IM 306 interface module for addressing input/output modules.
• Please note Section 3.4.4!
• If you use digital input modules on the ER 701-2 or ER 701-3, it is recommended that these be
modules with revision level ”2” (or higher).
Table 3-1. Technical Specifications for Distributed
Configuration Interface Modules
IM 304
8
600 m
1.2 A 0.85 A
Maximum number of EUs that
can be connected
Max. total cable length
Current consumptionat 5 V
IM 314
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3-22
EWA 4NEB 811 6148-02
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