2/16/2019 10:13 AM | |
Joined: 4/28/2015 Last visit: 1/25/2021 Posts: 4 Rating: (0) |
Hi all, We have configuration with S7-400 Redundant and 8 IM153-2 IO interface modules in redundant mode too (8 nodes = total 16 modules). After some redundancy tests on the 400H rack with Primary and Secondary CPU's and replacement of one of the Power supply 407 4A, it happened that some of the IM153-2 nodes (5 nodes, randomly, Primary or Secondary) goes faulty with SF led ON steady, without returning to normal state. Even after Power off/on of the modules, they still remain continuously in SF led ON steady. I manage to substitute/swap various modules in order to restore fully functionality of each node at least in standalone mode. According the LED diagnostic interpretation, I am in the situation of "IM 153-2 is undergoing a hardware reset after switching on" (see attachment). I don't know what means this and what remedy to apply. Can anyone tell me what can I do to fix the issue? Thans a lot. ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 2/18/2019 11:12:39 AMNew subject after splitting |
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