ABB SCS Troubleshooting Guide 说明(英语)用户手册.pdf

2GNB110057-004 Switching Control Sentinel Page 95 9 Table 9.1: Troubleshooting Tips ltem | Problem Recommended Actions Check Supply voltage at J3(1-5). If this voltage is 125 V DC (orthe respective 1 Power light is off Substation control voltage) check the intermal fuses. If the fuses are good but the light is stil off, contact ABB 2 Clock light is off See item 1, fthe powerlight is off, too, Otherwise contact ABB. Check ltems 1 and 2. Verify use of serial cable part number 406A067-01. Do net use a nul-modem cable or null-modem plug in combination with the scs does not communi- supplied serial cable, When using CB Insight to communicate with the SCS， 3 cate select Tools | CB Insight Settings” verify baud rate and com port selection. Try communicating with a different SCS using the same computer and cables， ffthis works (proof that the problem is with the SCS not the computer or set- tings) contact ABB. Check the current through the auxiliary CTs, ffeasible, verify that the voltage “Check CT Currentts”light | across J13 (1-2), J13 (3-4) and J13 (5-6) is approximately 1 V RMS for every 4 is on, even though cur- 1ARMS flowing through the auxiliary CTs. rent is flowing through the | Download data using the Data-Download Wizard. Switch to the “Control Cen-