GE Power Management
MM2 Motor Manager 2
4-23
4 SETPOINTS
4.4 S3 PROCESS
4
healthy, start commands (Start A / Start B switch inputs Auto Start A / Auto Start B switch inputs)
must be maintained in the closed state in order for the MM2 to keep the motor running. When the
Start input is opened, the MM2 sees this as a STOP command and both contactor outputs will
open. This is useful in applications with limit switches, PLC control or Hand/Off/Auto control.
•
TEST SWITCH: This function is used to create a Test switch facility. When the Test switch input
is healthy statistical counters (see actual values
A4: STATISTICS \ COUNTERS
) are not incremented
with the exception of the interlock counter. This is used when control tests on the contactor are
being performed and counters should not be updated. Note: if the motor is running when this
switch is put into the healthy position, both contactors will open.
•
REMOTE PERMISSIVE: This function provides a means to interlock between the keypad START
A / START B keys and the Start A / Start B switch inputs. When a Remote Permissive switch is
not used both of these start command sources will operate when the MM2 is in Manual mode
(MANUAL LED on). When the Remote Permissive switch is healthy, the Start A / Start B switch
inputs are functional but the START A / START B keypad keys are disabled. When the Remote
Permissive switch is unhealthy, the START A / START B keypad keys are functional but the Start
A / Start B switch inputs are disabled. Note: Auto mode or Hardwired Auto mode (AUTO LED on)
disables both the Start A / Start B switches and the START A / START B keypad keys.
•
COMMUNICATION SELECT: This function provides a facility to override the keypad AUTO /
MANUAL keys. When this switch is healthy the MM2 is forced into Auto Serial mode (AUTO LED
on). When this switch is unhealthy, the MM2 reverts back to the mode that was present before
the switch was closed (Manual mode-MANUAL LED on or Hard-Wired Auto mode-AUTO LED
on).
•
INTERLOCK COUNTER: This function provides a means to count switch closures when
assigned to one of the programmable switch inputs. When the switch input is put into the healthy
position, the counter will increment by one. The counter can be viewed on page
A4: STATISTICS \
COUNTERS
. The interlock counter name and units can be programmed on page
S3: PROCESS \
INTERLOCK NAMES
. The digital input coming into the MM2 must have an ON time of no less than
100 ms and an OFF time of no less than 100 ms. This means that the MM2 can count up to 5
pulses per second = 5 Hz. The counter will count up to 65535 and then roll over. The counter can
be cleared on page
S1: CONFIGURATION \ STATISTICS
or via the serial communications link.
•
AUX RELAY 1 INHIBIT: This function will override/inhibit AUX Relay 1. When healthy, it will pre-
vent AUX Relay 1 from turning ON, or turn OFF AUX Relay 1 after it is already ON.
•
WYE-DELTA 1M CONTACT: This function is used as a status feedback input for the wye-delta
closed transition starter type. See Section 9.11: WYE-DELTA CLOSED TRANSITION STARTER.
•
WYE-DELTA 2S CONTACT: This function is used as a status feedback input for the wye-delta
closed transition start type. See Section 9.11: WYE-DELTA CLOSED TRANSITION STARTER.
•
U/V RESTART INHIBIT: This function disables the undervoltage restart feature when the switch
is in the healthy position and allows U/V restarts to take place when the switch is unhealthy. Note
that the undervoltage restart feature must be activated in
S4: CONTROL
for this interlock function to
have any effect.
•
AUTO TRANS 2S CONTACT: This function Is used as a status feedback input for the autotrans-
former open/closed transition starter type. See Section 9.7: AUTOTRANSFORMER OPEN
TRANSITION STARTER on page 9–20 and 9.8: AUTOTRANSFORMER CLOSED TRANSITION
STARTER on page 9–24.
Summary of Contents for MOTOR MANAGER 2
Page 2: ......
Page 4: ......
Page 34: ...3 8 MM2 Motor Manager 2 GE Power Management 3 3 THEORY OF OPERATION 3 HARDWARE 3 ...
Page 80: ...5 12 MM2 Motor Manager 2 GE Power Management 5 5 A4 STATISTICS 5 ACTUAL VALUES 5 ...
Page 188: ...9 40 MM2 Motor Manager 2 GE Power Management 9 13 SOFT STARTER 9 STARTER TYPES 9 ...
Page 212: ...E 4 MM2 Motor Manager 2 GE Power Management E 1 CT ISOLATION APPENDIXE E ...
Page 220: ...iv MM2 Motor Manager 2 GE Power Management INDEX ...
