Rockwell Automation 825 Smart Motor Manager User Manual - Manual (Page 73)

Functions 3-40
Publication 825-UM001B-EN-P January 2001
Connection of the Main Relay (MR)
The main output relay can be operated as electrically held or non-fail-safe.
Electrically Held Mode
Non-Fail-Safe Mode
Note: Terminal markings should be changed from those used in electrically held mode when
switching to this mode.
Applications of the Non-Fail-Safe Connection
The non-fail-safe connection is suitable for use in situations where the failure of the control
voltage must not interrupt the process:
• Chemical processes
• Kneaders and mixers in which the mass would solidify
• Fresh air fans
• Cooling pumps, etc.
Connection of the Alarm Relay (AL)
In firmware versions before 2.18 the alarm relay was connected in the non-fail-safe mode.
Since V2.18 (and later) it can also be connected in the electrically held mode.
95
96
97
98
Supply Off Supply On Supply On and Trip
97
98
95
96
Supply Off Supply On Supply On and Trip