Siemens SIMATIC ET200SP PS 6EP7133-6AB00-0BN0 24 V/5 A User Manual (English)

To Next Page

To Previous Page

Applications

9.3 Overload protection in the 24 V output circuit

SIMATIC ET200SP PS

44 Manual, 03.2018, A5E43207434

9.3

Overload protection in the 24 V output circuit

If an overload occurs, the electronic current limiting function of the 24 V power supply limits

the output current to a maximum value (see Section Technical data (Page 27)). The output

cables are protected against a thermal overload if they are dimensioned corresponding to

the maximum rms output current, or protected using additional components (for example,

miniature circuit breaker, fuses).

However, a load circuit that fails as a result of overload, for instance, should frequently be

reliably and quickly identified and specifically switched off before the power supply goes into

current-limiting mode (in current-limiting mode, the supply voltage would also be reduced for

all of the remaining 24 V loads).

The SITOP PSE200U selectivity module with 4 outputs (versions with adjustable output

current range for each output from 0.5 - 3 A and 3 - 10 A) is available for this purpose; this

monitors the 24 V branches for overload and short circuit (Figure 9-3 Electronic protection of

24 V loads using the SITOP PSE200U selectivity module (Page 44)). Brief current peaks,

e.g. as a result of a high inrush current, are permitted, and branches with a longer overload

are switched into a no-current condition. This is also ensured for cables in a high-ohmic

condition and for short circuits that slowly develop over time.

When an output fails, the fault is signaled using a group signal contact or as a single channel

signal, and the branch of the module involved is displayed using an LED.

For variants with single-channel signaling, function blocks for evaluation purposes are

available for SIMATIC S7-1200/1500/300/400, for STEP 7 Classic and TIA Portal at no

charge.

You can find additional information at:

Manual SITOP selectivity modules

(https://support.industry.siemens.com/cs/ww/en/view/108989004

)

Figure 9-3 Electronic protection of 24 V loads using the SITOP PSE200U selectivity module

Need help?

Do you have a question about the Siemens SIMATIC ET200SP PS 6EP7133-6AB00-0BN0 24 V/5 A and is the answer not in the manual?

Siemens SIMATIC ET200SP PS 6EP7133-6AB00-0BN0 24 V/5 A Specifications

General