User guide
Digital Inputs and Outputs    CME 2 User Guide 
62  Copley Controls 
Custom Event Functions 
Select any combination of events to configure a custom event output: 
Event 
Description 
Amplifier Fault 
A latched fault is active. 
Amp Over Temperature 
For descriptions of these fault events, see Fault Configuration Parameters 
(p 88). 
Motor Phasing Error 
Feedback Error 
Motor Over Temperature 
Under Voltage 
Over Voltage 
Short Circuit 
Current Limited 
The current output is being limited by the I
2
T algorithm (p. 191) or a latched 
current fault has occurred. See Limits (p. 118.) 
Voltage Limited 
Current loop is commanding the full bus voltage in an attempt to control 
current. Commonly occurs when the motor is running as fast as the 
available bus voltage will allow. 
Positive Limit Switch 
Axis has contacted positive limit switch. 
Negative Limit Switch 
Axis has contacted negative limit switch. 
Amp Disabled by Hardware 
Amplifier enable input(s) is not active. 
Amp Disabled by Software 
Amplifier is disabled by a software command. 
Attempting to Stop Motor 
The amplifier, while in velocity or position mode, has been disabled. 
In velocity mode, amplifier is using the Fast Stop Ramp described in  
Velocity Loop Limits (p. 122). In position mode, the amplifier is using the 
Abort Deceleration rate described in Trajectory Limits (p. 131).  
The output remains active until the amplifier is re-enabled. 
Motor Brake Active 
Motor brake activated. See Brake/Stop Notes (p. 53). 
PWM Outputs Disabled 
The amplifier’s PWM outputs are disabled. 
Positive Software Limit 
Actual position has exceeded the positive software limit setting. 
See Homing (p. 145). 
Negative Software Limit 
Actual position has exceeded the negative software limit setting.  
See Homing (p. 145). 
Following Error 
Following error has reached programmed fault limit.  
See Following Error Fault Details (p. 91). 
Following Warning 
Following error has reached programmed warning limit. 
See Following Error Fault Details (p. 91). 
Position has Wrapped 
The position counters have exceeded the maximum range of  
-2
31
 – 2
31
-1 and have wrapped. Normal amplifier operation is not affected. 
Velocity Limited 
The velocity command (from analog input, PWM input, or position loop) 
has exceeded the velocity limit. See Velocity Loop Limits (p. 122). 
Acceleration Limited 
In velocity mode, motor has reached an acceleration or deceleration limit 
that was set as described in Velocity Loop Limits (p. 122). 
Pos Outside of Tracking 
Window 
The following error has exceeded the programmed value. 
See Tracking Window Details (p. 92). 
Home Switch Active 
Axis has contacted the home limit switch.  
In Motion 
The motor is moving, or it has not yet settled after a move. The amplifier is 
settled when it comes within the position tracking window and stays there 
for the tracking time at the end of a move. Once this bit is set, it remains 
set until a new move is started. 
Vel Outside of Tracking 
Window 
Difference between target and actual velocity has exceeded the window. 
See Tracking Window Details (p. 92). 
Phase not Initialized 
Amplifier is using Phase Initialization function and phase is not initialized. 
Command Input Fault 
See Fault Configuration Parameters (p. 88). 










