Omron R88M-K - Overrun Protection; Operating Conditions; Objects Requiring Settings

7-11
7 Applied Functions
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
7-3 Overrun Protection
7
7-3-1 Operating Conditions
7-3 Overrun Protection
This function detects an Overrun Limit Error (Error No. 34.0) and stops the Servomotor if the motor
exceeds the allowable operating range set for the Overrun Limit Setting (3514 hex) with respect to the
position command input.
The function can also prevent the Servomotor from clash into the machine edge due to vibration.
The overrun limit works under the following conditions.
The position command input range will be cleared to zero under any of the following conditions.
• When the power supply is turned ON,
• While the position error is cleared. This includes when the servo is OFF and when the error counter is
cleared due to a deceleration stop for the drive prohibit input.
• When a trial operation via USB communications starts and when it ends.
• When the position data is initialized. This includes at a component setup request, at an origin return,
when setting the coordinate system, at an adjustment command, and when clearing a multi-rotation
data via USB.
Precautions for Correct UsePrecautions for Correct Use
• This function is not intended to protect against incorrect position commands.
• When this function works, the Servomotor decelerates and stops according to the Fault
reaction option code (605E hex). Take this deceleration operation into account when you set
the Overrun Limit Setting (3514 hex). Otherwise, the load during deceleration may hit and
cause damage to the machine edges.
• The overrun limit function is disabled for FFT analysis from the CX-Drive.
7-3-1 Operating Conditions
Conditions
Operating Mode Position Control Mode, Fully-closed Control Mode
Others • Servo ON state
• The factors other than control objects must be set correctly. This includes the
torque limit. The motor must operate normally without any failures.
Conditions for Clearing the Position Command Input Range
7-3-2 Objects Requiring Settings
Index Name Description
Reference
page
3514 hex Overrun Limit Setting Sets the Servomotor's allowable operating range for the
position command input range.
page 9-43