2/8/2016 5:27 PM | |
Joined: 12/7/2011 Last visit: 8/16/2024 Posts: 384 Rating: (9) |
Hi to all, I'm facing an a comunication problem between a PLC 319 2PN-DP and Siprotec 7UM62. I've configured the 3-4 profile in the Siprotec and PLC as well, according to the maps profile i've configured my address in hw config. The problem is that when an electrical trip occur i'm not able to recognize the relative alarm on PLC. I've cheked again all configuration on the protection and PLC but seems to be all ok. Only one things, i use the incoming alarm in the OB35, but the process image is updated from OB1. Does the problem could come from the cicle updating? And if yes, how could i fix this problem? Thanks in advance. Duccio. AttachmentMatrix.pdf (132 Downloads) |
2/12/2016 2:28 PM | |
Joined: 12/7/2011 Last visit: 8/16/2024 Posts: 384 Rating: (9) |
Hi to all, I'm here again and still with my problem. But now i've some information more: The comunication between Siprotec and PLC is ok, because i'm able to read the analog value and some digital input mapped on byteoffset 2, bits 0,1,7 byteoffset 17, bit 7 But what i'm not able to recognize the trip signals such as: 1815 - 50/51 OVER CURRENT TRIP FOR DIFF> mappe on byteoffset 10, bit 5 1471 - BREAKER FAILURE / TRIP CIRCUIT MONITORING mappe on byteoffset 13, bit 2 etc. etc. Now i've read in the SIPROTEC4 PROFIBUS-DP Communication profile that: Note: When analysing the annunciations of the SIPROTEC device in the PROFIBUS-DP master, it should be noted that due to the cycle period of the PROFIBUS-DP system or due to the cyclic processing time of a PLC, temporary changes of an annunciation’s value (ON and OFF within one cycle) may eventually not be recognized. This applies in the first place for protection annunciations. Protection pickup: Protection annunciations which indicate the status protection pickup, are active only for the period of time of the protection pickup. Protection TRIP: The parameter MINIMUM DURATION OF TRIP COMMAND (parameter address = 210) allows setting of the minimum duration of the TRIP command. This time setting applies to all protection functions which may cause a TRIP signal. After a protection TRIP, the corresponding protection annunciations transmit the value ON for the programmed minimum time duration. For avoid any cycle problem, I've move my FC from OB35 to OB1, but the problem is still present. Now the last trial i could do is change the parameter mentioned above, the MINIMUM DURATION OF TRIP COMMAND 210 . Another question is: I've seen that i can change the trasmission block during online comunication, i try to do that but i've a doubt because after push the button and see the bar graph working, the icon on the right bottom remain the same (refer to attached).
If also this will not work i really don't know what to do for fix the problem. Please help me Best Regards. Duccio AttachmentSiprotec.pdf (128 Downloads) |