Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 155)

Rockwell Automation Publication 750-RM002B-EN-P - September 2013 155
Chapter
3
Diagnostics and Protection
Alarms Alarms are indications of situations that are occurring within the drive or
application that are annunciated to the user. These situations can affect the drive
operation or application performance. Conditions such as power loss or analog
input signal loss can be detected and displayed for drive or operator action.
There are two types of alarms.
• Type 1 Alarms are conditions that do not cause the drive to trip or shut
down, but, if the condition persists, it can lead to a drive fault.
• Type 2 Alarms are conditions that are caused by improper programming
and prevent the drive from starting until programming is corrected. An
example of a Type 2 alarm is when a start function is assigned to a digital
input without a stop function also assigned to a digital input.
The Troubleshooting section of the PowerFlex 750-Series Programming Manual,
publication
750-PM001 , contains a list of drive-specific faults and alarms, their
type of fault or alarm, and what action can be configured if applicable.
Topic Page
Alarms 155
Current Limit 156
DC Bus Voltage/Memory 158
Drive Overload 158
Faults 162
Input Phase Loss Detection 166
Motor Overload 168
Overspeed Limit 172
Password 173
Real Time Clock 174
Reflected Wave 179
Security 185
Shear Pin 188
Slip Compensation 192
Slip Regulator 194