Starter Types; Full-Voltage Non-Reversing Starter - GE Multilin MM3 Motor Manager 3 Instruction Manual

CHAPTER 2: INSTALLATION
2.4.1 Full-voltage
Non-reversing
Starter
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
2.4

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 2-4: Full-voltage non-reversing elementary starter
To program the MM3 Motor Manager 3 for full-voltage non-reversing starter, set
CONFIGURATION STARTER
Start sequence:
1. Start command received by the MM3 Motor Manager 3 (serial, switch input or
faceplate).
2. Close and maintain contactor A output relay – the motor is now across the
line.
Stop/trip sequence:
1. Stop command received or trip occurs.
2. Open contactor A output relay – the motor is now off line.
When the power to the MM3 Motor Manager 3 is interrupted, the contactor A output relay
de-energizes, causing it to open and stop the motor. The MM3 Motor Manager 3 can only
be wired for fail-safe operation.
If feedback is not received from the 1M contact to the Contactor A status normally-open
input on the MM3 Motor Manager 3 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 normally-open input for more than 1
second after opening the contactor A output relay, a Welded Contactor alarm occurs.
STARTER TYPE to "FV NON-REVERSING".
STARTER TYPES
S1
2–7