The power distribution system supplies the 24 Vdc I/O power segment and the TM5 power bus for local, remote and distributed configurations.
The planning of your TM5 power distribution system should follow this order:
|
Step |
Description |
|---|---|
|
1 |
Plan your TM5 System (controller and expansion modules, remote and distributed islands). |
|
2 |
(Optionally) Create some 24 Vdc power segments by adding PDM type TM5SPS1•, for example, to separate the input slices from output slices. Another example is to separate the AC slices from DC slices. |
|
3 |
Calculate the current consumed on each 24 Vdc I/O power and insert additional PDM type TM5SPS1• to create segments where and when needed. |
|
4 |
Calculate the current consumed on the TM5 power bus segment(s) and replace PDM type TM5SPS1• with type TM5SPS2• or provide additional PDM type TM5SPS2• where and when needed. |
|
5 |
For a defined safe state at power-off for the non-safety-related I/O modules connected to an SPDM (Safe Power Distribution Module), calculate the current consumed on each 24 Vdc I/O power segment and insert additional SPDM to create segments where and when needed. |
To plan the power distribution of the TM5 System you must calculate the:
Current consumption on the 24 Vdc I/O power segment(s)
Current consumption on the TM5 power bus segment or segments in the case of remote configuration(s)
The current consumed on the 24 Vdc I/O power segment is composed of:
The current consumed by the electronic modules
The current consumed by the loads connected to the DC outputs of the modules supplied by the 24 Vdc I/O power segment
The current consumed to supply the sensors and actuators connected to the electronics modules
The current consumed to supply external devices connected to the Common Distribution Modules (CDM)