Rockwell Automation 825 Smart Motor Manager User Manual - Manual (Page 86)

3-53 Functions
Publication 825-UM001B-EN-P January 2001
The selected functions are completely disabled as long as the control input is “on”
(24V AC/DC).
• No alarm
• No trip, no reset
• Tripping delays begin to run only after the function is re-enabled.
Switching to a Second Rated Current
In the Smart Motor Manager, a second value can be selected for the rated current I
e
. The
change to the second rated value is controlled by activating control input #2 with 24V
AC/DC.
Make sure the second rated current is compatible with the current range of the Cat.
No. 825-MCM current converter module.
Application
• Two-speed motors
• Briefly increased loading of the motor and installation
• Maximum loading when the ambient temperature varies appreciably. Examples:
Exposed water pumps, different conveying capacities during, daytime and at night
Functions of the Cat. No. 825-MLV Option Card
Phase Sequence
Function
If a motor is switched on in the wrong direction of rotation, the installation can be adversely
affected. The Smart Motor Manager monitors the phase sequence when voltage is applied,
and prevents the motor starting in the wrong direction.
Applications
• Mobile installations (e.g., refrigerated transporters, construction machines)
• Installations that can be displaced as enclosed units (e.g., mobile crushers, conveyor
belts, saws)
• If a reversed phase sequence must be expected after a repair.