{"id":1031,"date":"2015-10-28T00:35:12","date_gmt":"2015-10-28T00:35:12","guid":{"rendered":"https:\/\/wireless-telemetry.com\/blog\/?p=1031"},"modified":"2015-10-28T00:35:12","modified_gmt":"2015-10-28T00:35:12","slug":"interpreting-vfd-fault-codes","status":"publish","type":"post","link":"https:\/\/wireless-telemetry.com\/blog\/?p=1031","title":{"rendered":"Interpreting VFD Fault Codes"},"content":{"rendered":"
\"admin\"

Jim Mimlitz, NRI<\/p><\/div>\n

When\u00a0NRI’s VFD & Energy Analytics is implemented in\u00a0a\u00a0water plant\u00a0or pumping station, VFD (Variable Frequency Drive)\u00a0fault alarms\u00a0are passed as numerical codes to the SCADA system via an industrial communication protocol (e.g. Modbus, DF1, EtherNet\/IP, etc.) and then to the operator.<\/p>\n

A code of ‘0’<\/strong><\/em> (zero)\u00a0signifies no fault condition, whereas a non-zero code signifies that a fault condition is present.\u00a0 Each VFD manufacturer provides a list of numeric codes, along with descriptors,\u00a0that is specific to each VFD model.<\/p>\n

For example, a fault code of ‘3’<\/strong><\/em> on an Allen Bradley PowerFlex 400 or PowerFlex 753 VFD is defined as ‘Power Loss — Incoming AC line\u00a0Low Voltage or Line Power Interruption’<\/strong><\/em>.<\/p>\n

The purpose of this article is to provide a common repository for Fault Code documentation for some of the more common VFD’s that are in use at NRI client facilities.<\/p>\n