Primary Resistance Starter - GE Multilin MM3 Motor Manager 3 Instruction Manual

STARTER TYPES
2.4.5 Primary
Resistance
Starter
2–18
This starter type is a reduced voltage starter. When the start button is pressed the S coil is
picked up and seals itself in. Timing relay TR is also picked up and closes after a set time
period providing full voltage to the motor. Pressing the stop button drops out the S and R
contactors and the motor stops.
Figure 2-14: Elementary Primary Resistance Magnetic Starter
To program the MM3 Motor Manager 3 for primary resistance magnetic starter, set:
S1 CONFIGURATION
S1 CONFIGURATION
This STAGE ONE SHORTING TIME
selected as "SLIP RING". This is the time delay from the closure of contactor A until the
closure of contactor B.
Start sequence:
1. Start command received by the MM3 Motor Manager 3 (serial, switch input or
faceplate).
2. Close and maintain contactor A relay – the motor is now starting at reduced
voltage
3. Wait STAGE ONE SHORTING TIME
4. Close and maintain contactor B relay – the motor is now running at full
voltage.
Stop/trip sequence:
1. Stop command received by the MM3 Motor Manager 3 or a trip occurs.
2. Open Contactor A and B output relays.
STARTER STARTER TYPE
STARTER STAGE ONE SHORTING TIME
setpoint appears when the
delay.
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
: "SLIP RING"
: 1 to 125 sec.
STARTER TYPE setpoint is