User Manual
Section 5
GFK-2958L
May 2021
Detailed Description of I/O Modules
385
5.35
Power-feed Module for Input Current Path EP-
7631
Figure 209: Power-feed
Module for Input Current
Path EP-7631
Figure 210: Connection Diagram EP-7631
Power-feed modules are used to refresh the current paths and isolate the power supply. The
main power supply of the RSTi-EP station is always fed in via the network adapter. A power-
feed module EP-7631 must be connected if the current demand of the series of input
modules is too large.
The maximum feed-in current in the input current path via the 4-pole connector is 10 A.
Details required to calculate current demand and power supply are presented in Section,
Current Demand and Power Supply. Power-feed modules are passive modules without
fieldbus communication, therefore they are not considered during configuration.
Note
: A maximum of three passive modules (power-feed module, potential distribution
module, empty slot module) may be installed in succession, however the next
module to be installed must be an active module.
CAUTION
In the case of a maximum power supply of >8 A and a maximum temperature of > +55°C
(131 °F), all four contacts must be connected with 1.5 mm² wiring.