Field Supply Layout

Designing the field supply requires knowledge of the entire field-side current consumption of the installed I/O modules. The field-side current consumption of an I/O module consists of:

• Demand from the field-side I/O module electronics
• Possible output currents of the I/O modules used

You can find product-specific information on “Current Carrying Capacity of the Power Jumper Contacts” and “Current Consumption of the Field Supply (Module without External Load)”in the technical data of the corresponding & Product Manual.

More power must be provided through an additional supply module if:

• The maximum permissible total current of the field power supply is reached
• The maximum permissible total current of the power jumper contacts is reached
• The I/O module positioned to the left in the sequence does not pass on the required potential

Do not exceed maximum total current for I/O modules via power contacts! The current carrying capacity of the power jumper contacts is 10 A. The power jumper contacts for the internal field supply can be damaged and the permissible operating temperature can be exceeded by higher values.