What’s the issue with being unable to read the DELTAV SIS logic calculator?
Thread Content
I’ve only recently started working with Emerson DELTAVIS SIS, and my knowledge of it is limited. The original logic controller in the factory’s DELTAVIS SIS system, an SLS 1508, indicated a fault. I replaced it with a spare unit. The indicator lights on the new logic controller – lights 1 and 2, as well as lights 3 and 4 – flickered alternately for about a minute, after which light 1 remained on constantly while light 4 continued to flicker. There was no display on the system either. What could be the cause of this? I need someone who knows DLETAV SIS to help answer this.
SLS 1508 is generally configured in a redundant manner. After you replace it, lights 1 and 2, as well as lights 3 and 4, will flash alternately every minute, as the module undergoes power-on self-check. After that, 1 light remains on continuously while 4 lights flash. The official explanation is: it is in use, not configured, or being configured. It seems that the new one is synchronizing with the ACTIVE SLS 1508; once the synchronization is complete, everything should be fine. It will be normal once 1 and 4 are constantly lit.
So if it’s always in sync, how should it be handled to make it work properly?
Similar to DCS systems, after replacing the control cards in a SIS system, it is necessary to upload the existing configuration program； If the 4 lights keep flashing, it indicates that the configuration program was not installed successfully; it’s possible that the system does not support automatic installation, and manual setup is required ； It is also possible that there have been changes in the logic settings, requiring reconfiguration.
Similar to DCS systems, after replacing the control cards in a SIS system, it is necessary to upload the existing configuration program； If the 4 lights keep flashing, it indicates that the configuration program was not installed successfully; it’s possible that the system does not support automatic installation, and manual setup is required ； It is also possible that there have been changes in the logic settings, requiring reconfiguration.
Similar to DCS systems, after replacing the control cards in a SIS system, it is necessary to upload the existing configuration program； If the 4 lights keep flashing, it indicates that the configuration program was not installed successfully; it’s possible that the system does not support automatic installation, and manual setup is required ； It is also possible that there have been changes in the logic settings, requiring reconfiguration.
If the SIS card is removed and then reinstalled, it needs to be downloaded again; otherwise it won’t work
It has passed the self-check, so that means this new spare part is good, right?