Siemens SIMATIC S7-1500 System Manual page 333

This prevents the insertion of a power connector of a 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
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.
Procedure
To replace the coding element on the power connector of the load current supply, follow
these steps:
1. Orient yourself using the labeling on the power cable connection.
Figure 13-4 Labeling on the power connector
2. Orient yourself using the red marking on the coding element.
3. The coding element has 3 red markings. Turn the coding element in such a way that one
of the 3 red markings corresponds to the voltage indicated on the connector.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
13.3 Replacing the coding element at the power connector of the load current supply
DANGER
DANGER
Maintenance
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