Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 62)

40 Parameter Menu • System
Publication 1398-PM601A-EN-P — October 2000
MENUS
System
System parameters include values that describe the mechanical environment in which the motor is oper-
ating. The System parameters will generally not be changed once set. The settings should be reviewed
and set based on the application.
To save the values in the dialog box and close the dialog, choose OK. To leave without saving the val-
ues, choose Cancel.
Absolute Mode
If Absolute Mode is ON (checked), the following features will be enabled: Software Travel Limits, the
At Home Flag, the At Home Output and the Emergency Return function. These features will not operate
until a home position has been defined. Refer to Appendix A, System Programs, Home for more
detailed information on defining a home position.
Note: In addition to the Absolute mode setting, the At Home output must also be assigned if it is to
function. Refer to Part 2
•
IQ Master Environment, Parameters, Outputs, for more detailed information
on At Home.
Forward Software Travel Limit
Forward Limit sets the forward software travel limit. The limit is enabled when the Absolute mode
parameter is on. If travel exceeds this value in the forward direction, an error occurs and the ULTRA
Plus or IQ is disabled. Jog commands may be used to move off a software travel limit. Forward Limit is
entered as user units (defined by the Scale parameter). The maximum value is ±2,147,483,648 (2
31 )
encoder counts.
Reverse Software Travel Limit
Reverse Limit sets the reverse software travel limit. The limit is enabled when the Absolute mode
parameter is on. If travel exceeds this value in the reverse direction, an error occurs and the ULTRA
Plus or IQ is disabled. Reverse Limit is entered as user units.
Ereturn Position
ERETURN Position specifies the position the system moves to when the Emergency Return input is
activated. The ERETURN Position is entered as user units. ERETURN is only active while in Absolute
mode. For more detailed information on this value refer to Part 5
•
Language Reference, and to Appen-
dix A
•
System Programs, Emergency Return.
Following
Error Limit Following Error Limit sets the maximum
allowable following error and time for fault
recognition (following error is defined as
the difference between commanded posi-
tion and actual position). There are two
parameters associated with the Following
Error Limit: limit size and time. Part 5
Language Reference
FEL and FET
ILIMIT ILIMIT is the maximum current limit in
amperes. The maximum current to the
motor will not exceed this value. Part 5
Language Reference
ILIMIT
IAVG IAVG is the average current trip point for
the ULTRA Plus or IQ in amperes (typi-
cally set to the motors continuous current
rating or less). Part 5
Language Reference
IAVG