Starter Types; Fv Non-Reversing Starter; Description; Mm2 Sequences - GE MOTOR MANAGER 2 Instruction Manual

9 STARTER TYPES

9.1 FV NON-REVERSING STARTER

9.1 FV NON-REVERSING STARTER

9.1.1 DESCRIPTION

9 STARTER TYPES
This starter type is a full voltage or across-the-line non-reversing starter. When the start button is
pressed the 1M coil is picked up, starting the motor and is sealed in by the 1M contact. When the
stop button is pressed the 1M coil is dropped out and the motor stops.
Figure 9–1: FULL-VOLTAGE NON-REVERSING ELEMENTARY STARTER
To program the MM2 for full-voltage non-reversing starter, set:
S1 CONFIGURATION\STARTER\STARTER TYPE: FV NON-REVERSING

9.1.2 MM2 SEQUENCES

START:
1. Start command received by the MM2 (serial, switch input or faceplate).
2. Close and maintain Contactor A output relay – the motor is now across the line.
STOP/TRIP:
1. Stop command received or trip occurs.
2. Open Contactor A output relay – the motor is now off line.
9
When the power to the MM2 is interrupted, the contactor A output relay de-energizes, causing it to
open and stop the motor. The MM2 can only be wired for fail-safe operation.
If feedback is not received from the 1M contact to the Contactor A Status N.O. input on the MM2
within one second of closing the Contactor A output relay, an OPEN CONTROL CIRCUIT alarm
occurs. This causes the Contactor A output relay to open. If feedback remains at the Contactor A
Status N.O. input for more than 1 second after opening the Contactor A output relay, a WELDED
CONTACTOR alarm occurs.
MM2 Motor Manager 2 9-1
GE Power Management