6BK1700-4BA40-0AA0

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A decoupling module must be used:

• When using a current/voltage measuring module, if the supply system is not grounded.
• When using a current measuring module or a current/voltage measuring module when the system bus has reached its maximum current consumption.

If a mixed configuration is planned with temperature module, digital module and current measuring module or current/voltage measuring module, it must be checked first whether a decoupling module is required.

If

(Number (temperature module) * 2 + Number (digital module) * 1 + Number (current measuring module or current/voltage measuring module) * 4) > 14,

a decoupling module is then required.

For a calculation example, see the "SIPLUS HCS300I Heater Controller" System Manual, http://support.automation.siemens.com/WW/view/en/54439691.

Note:

For this equation, each module type is weighted with a specific current factor, see Table.