
2–16
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
STARTER TYPES
CHAPTER 2: INSTALLATION
2.4.4
Slip Ring
Starter
The slip ring starter is a secondary resistance starter used with wound rotor motors. When
the start button is pressed, the S coil is picked up and seals itself in. The motor is now
starting at a reduced current with the secondary resistors in circuit. Timing relay TR is also
picked up and closes after a set time period, shorting out the resistors in the motor
windings. Pressing the stop button drops out the S and R contactors and the motor stops.
Figure 2-12: Elementary Slip Ring Magnetic Starter
To program the MM3 Motor Manager 3 for slip-ring starter, set:
S1 CONFIGURATION
ÖØ
STARTER
Ö
STARTER TYPE
: SLIP RING
S1 CONFIGURATION
ÖØ
STARTER
Ö
STAGE ONE SHORTING TIME
: 1 to 125 sec.
The
STAGE ONE SHORTING TIME
setpoint appears when the
starter type
has been
selected as “SLIP RING”. It represents the time delay from the closure of contactor A until
the closure of contactor B.
Start sequence:
1.
The start command is received by the MM3 Motor Manager 3 (serial, switch
input, or faceplate).
2.
Close and maintain contactor A relay – the motor is now starting with the
secondary resistors in circuit.
3.
Wait
STAGE ONE SHORTING TIME
delay.
4.
Close and maintain contactor B relay – the motor is now running with the
secondary resistors shorted out.
Stop/trip sequence:
5.
Stop command received by the MM3 Motor Manager 3 or a trip occurs.
6.
Open Contactor A and B output relays.
Содержание MM3
Страница 8: ...vi MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 11: ...CHAPTER 1 INTRODUCTION OVERVIEW MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL 1 3 Figure 1 1 Functional block diagram ...
Страница 18: ...1 10 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL TECHNICAL SPECIFICATIONS CHAPTER 1 INTRODUCTION ...
Страница 80: ...4 18 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL CHASSIS MOUNT UNITS CHAPTER 4 SOFTWARE ...
Страница 124: ...5 44 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL S7 TESTING CHAPTER 5 SETPOINTS ...
Страница 198: ...8 54 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL MODBUS MEMORY MAP CHAPTER 8 COMMUNICATIONS ...
Страница 220: ...10 14 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL GE MULTILIN WARRANTY CHAPTER 10 MISCELLANEOUS ...