![GE Multilin MM300 Instruction Manual Download Page 53](http://html.mh-extra.com/html/ge/multilin-mm300/multilin-mm300_instruction-manual_123060053.webp)
CHAPTER 2: INSTALLATION
STARTER TYPES
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
2–33
Figure 2-37: Inverter starter typical control wiring - IO_E
NOTE
NOTE:
The above drawing applies only to a high-voltage power supply. If a low-voltage (DC)
power supply is used, an appropriate DC voltage source must be used for this power
supply.
.
The inverter starter is used with an external inverter that ramps the motor speed up on
start and ramps it down on stop.
The B Open Contactor Control Circuit and B Welded Contactor alarms are defeated when
the inverter starter is selected.
When a start A control is received, the pre-contactor (if any) is picked up for the set delay,
then relay1 picks up and seals-in, picking up contactor 1M. This provides power for the
inverter to start up. Relay2 closes after a 1 second delay, and seals in, which signals the
inverter to ramp up the motor. When a stop control is received, the relay2 drops out, and
the inverter ramps down. When the ramp down time timer has expired, relay1 is opened,
contactor 1M drops out, cutting power to the inverter and motor.
The inverter signals the relay that it is up-to-speed by closing auxiliary relay MR. If the
auxiliary relay MR unexpectedly opens while running, signalling a possible inverter
problem, relay2 drops out, and the inverter ramps down if it has not done so already. An
Inverter alarm is issued, but relay1 remains closed, so contactor 1M stays picked up, and
the supply to the inverter is maintained. This is done so that the inverter has power to
retain its event records for subsequent diagnosis of the problem. Relay1 is opened
removing power to the inverter when a stop control is received, and the alarm is reset on
the next start.
Forced starts (for example, External Start) operate in the same fashion as other starts, with
relay1 not picking up until the pre-contactor timer times out. Then, after 1 second, relay2
picks up. If up-to-speed feedback is not received from auxiliary relay MR within the
Ramp
Up Time
setting during a start, a Drive Start Failed alarm is generated. If up-to-speed
feedback is not seen before a stop control, an Inverter Fail alarm is generated, and relay2
opens as described above. If inverter speed feedback remains when the ramp down time
expires during a stop, a Drive Stop Fail alarm is generated. Neither results in a trip or a stop.
The Drive Start Failed alarm is latched until reset or cleared by a stop control. The Inverter
Fail alarm is cleared at next start.
1M
1M
Field Start
Reset
MR
Field Stop
MM300
Low Voltage
Motor
Manager
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
Au
x
VT
IN
1
IN
2
IN
3
IN
4
IN
5
IN
6
Co
m
Re
la
y
1R
el
a
y
2
L
N
PSU
N
L
2M
853708B3.cdr
I/O
Module
-T
y
pe
E
Low Voltage
DC Suppl
y
to
IO T
y
pe E
+
-
AC
Control Power
GE Multilin
G
Summary of Contents for Multilin MM300
Page 20: ...1 14 MM300 MOTOR MANAGEMENT SYSTEM INSTRUCTION MANUAL SPECIFICATIONS CHAPTER 1 INTRODUCTION ...
Page 184: ...6 8 MM300 MOTOR MANAGEMENT SYSTEM INSTRUCTION MANUAL COMMANDS CHAPTER 6 DIAGNOSTICS ...
Page 198: ...A 6 MM300 MOTOR MANAGEMENT SYSTEM INSTRUCTION MANUAL REPAIRS CHAPTER A APPENDIX A ...