Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Instrukcja Użytkownika Pobierz pdf (Strona 361)

Publication 1760-UM002B-EN-P - March 2005

Inside Pico GFX-70 8-7

Monitoring of Short-Circuit

and Overload with

1760-IB12XOB8

Depending on the type of expansion module in use, it is possible to use the

internal inputs I16, R15 and R16 to monitor for short-circuits or overloads on

an output.

• Pico GFX-70:

– I16: Group fault signal for outputs Q1 to Q4.

• 1760-IB12XOB8:

– R16: Group fault signal for outputs S1 to S4.

– R16: Group fault signal for outputs S5 to S8.

Examples

The following examples are for I16 = Q1 to Q4.

Example 1: Selecting an Output with Fault Indication

Figure 8.5 Circuit diagram for fault output via I16

The above circuit diagram functions as follows:

If a transistor output reports a fault, M16 is set by I16. The break contact of

M16 switches off output Q1. M16 can be cleared by resetting the Pico

GFX-70 power supply.

Example 2: Output of Operating State

Figure 8.6 Output of operating state

State

Outputs I16, R15 or R16

No fault found “0” = switched off (make contact)

At least one output has a fault “1” = switched on (make contact)

IMPORTANT

I16 can only be edited with Pico GFX-70 versions which

have transistor outputs.

I 01----M 16-------------------[ Q 01

I 16--------------------------S M 16

I 01----M 16-------------------[ Q 01

I 16---------------------------S M 16

M 16---------------------------[ Q 04

1 2 ... 356 357 358 359 360 361 362 363 364 365 366 ... 399 400

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