Krrish !!

We are currently doing IO-checks for one project. This project has an S7400FH system with Fail-safe IO cards. While performing diagnostic interruptcheck of F-AI card [MLFB: 6ES7336-4GE00-0AB0] we are observing a peculiar behavior, as follows:
1. When we simulate a wire-break for an F-AI channel, we receive an ACK_REQ on F-CH_AI Channel Driver immediately after wire-break situationis rectified (corrected).
2. However, When we simulate ashort-circuit situationfor an F-AI channel, we receive an ACK_REQ on F-CH_AI Channel Driverapprox. 40 sec.aftershort-circuit situationis rectified (corrected).

Wanted to know the reasons for this delay in short-circuit conditions. Also, is this behaviour normal ?

40 sec seems some problem

Madhava

Krrish !!

We are currently doing IO-checks for one project. This project has an S7400FH system with Fail-safe IO cards. While performing diagnostic interruptcheck of F-AI card [MLFB: 6ES7336-4GE00-0AB0] we are observing a peculiar behavior, as follows:
1. When we simulate a wire-break for an F-AI channel, we receive an ACK_REQ on F-CH_AI Channel Driver immediately after wire-break situationis rectified (corrected).
2. However, When we simulate ashort-circuit situationfor an F-AI channel, we receive an ACK_REQ on F-CH_AI Channel Driverapprox. 40 sec.aftershort-circuit situationis rectified (corrected).

Wanted to know the reasons for this delay in short-circuit conditions. Also, is this behaviour normal ?

After looking through the manual for ET 200 F modules, This is what I found :

After startup, short circuit, wire break or exiting of the measuring range, smoothing is

restarted. If, for example, smoothing = 16 conversion cycles is assigned and all channels are

active, it takes up to 2000 ms at 50 Hz until the process value is signaled.

If a discrepancy occurs, measuring and smoothing continues and is not restarted.

40 sec seems some problem

Krrish !!

Madhava

Krrish !!

We are currently doing IO-checks for one project. This project has an S7400FH system with Fail-safe IO cards. While performing diagnostic interruptcheck of F-AI card [MLFB: 6ES7336-4GE00-0AB0] we are observing a peculiar behavior, as follows:
1. When we simulate a wire-break for an F-AI channel, we receive an ACK_REQ on F-CH_AI Channel Driver immediately after wire-break situationis rectified (corrected).
2. However, When we simulate ashort-circuit situationfor an F-AI channel, we receive an ACK_REQ on F-CH_AI Channel Driverapprox. 40 sec.aftershort-circuit situationis rectified (corrected).

Wanted to know the reasons for this delay in short-circuit conditions. Also, is this behaviour normal ?

After looking through the manual for ET 200 F modules, This is what I found :

After startup, short circuit, wire break or exiting of the measuring range, smoothing is

restarted. If, for example, smoothing = 16 conversion cycles is assigned and all channels are

active, it takes up to 2000 ms at 50 Hz until the process value is signaled.

If a discrepancy occurs, measuring and smoothing continues and is not restarted.

40 sec seems some problem

Ashok Naphade

Yes it is rectified
just do factory reseting.

Ashok Naphade

Yes it is rectified
just do factory reseting.