Maintenance
14.3 Replacing the coding element at the power connector of the system power/load current supply
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
459
14.3 Replacing the coding element at the power connector of the
system power/load current supply
Introduction
The coding consists of a 2-part coding element.
Ex factory a part of the coding element is inserted into the back side of the power connector.
The other part is firmly inserted in the system power/load current supply.
This prevents the insertion of a power connector of a system power/load current supply into a
module of a different type.
Do not manipulate the coding element, or leave it off
• Changing or replacing the coding element can result in dangerous system states.
• To avoid damage, do not change or replace the coding element.
• You must not remove the coding element.
Replacement parts scenario
Insertion of the coding element into a new power connector in the case of a replacement
part.
Dangerous voltage
When installing the coding element, you must take into account the supply voltage of the
system power/load current supply: 24 V DC, 24/48/60 V DC or 120/230 V AC/DC
Only install the coding element with switched-off voltage.
You must insert the coding element in such a way that the power connector matches the
power supply module in terms of voltage.
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