Hand/Auto Configuration 10.3.1 3-Wire Hand / 2-Wire Auto - GE MOTOR MANAGER 2 Instruction Manual

10 CONTROL WIRE APPLICATIONS
10.3 HAND/AUTO CONFIGURATION
This control scheme is used when it is desirable to operate the starter manually and automatically. In
the Hand position the starter coil is energized via the START button and de-energized via the STOP
button. In the auto position the starter is energized automatically by the maintained PLC contact.
When the PLC contact opens, the motor stops.
To program the MM2 for three-wire hand / two-wire auto control (hand/auto configuration), set:
S3 PROCESS\PROGRAMMABLE INPUTS\INTERLOCK INPUT 1: TWO WIRE CONTROL
S3 PROCESS\PROGRAMMABLE INPUTS\INTERLOCK INPUT 2: AUTO PERMISSIVE
S3 PROCESS\PROGRAMMABLE INPUTS\INTERLOCK INPUT 3: AUTO START A
S3 PROCESS\STOP CONFIGURATION\FACEPLATE STOP: LATCHED
S3 PROCESS\STOP CONFIGURATION\PROCESS STOP: LATCHED
The INTERLOCK INPUT 1/2/3 setpoints were chosen to match the wiring diagram provided.
Any of the available Interlocks 1 through 10 could be programmed for TWO WIRE CONTROL,
AUTO-PERMISSIVE, or AUTO START A
NOTE
c) CONTROL OPERATION
HAND:
• In the hand position, the motor is available to start.
• When the START button is pressed, the motor runs.
• When the STOP button is pressed, the motor stops and a latched trip is generated. The motor
cannot be restarted until reset is pressed.
• When the faceplate stop key is pressed, it causes a latched trip. The motor cannot be restarted
until reset is pressed.
AUTO:
• In the auto position, the motor is available to start.
• When the PLC contact closes, the motor runs.
• When the PLC contact opens, the motor stops and a latched trip is generated. The motor cannot
be restarted until reset is pressed.
• When the faceplate stop key is pressed, it causes a latched trip. The motor cannot be restarted
until reset is pressed.
• Start commands from the faceplate, serial port and terminals 12 and 53 are blocked.
Terminal 11 (Stop input) must be closed to allow a start. The MM2 display will read "Motor Status
Unavailable" when the stop input is open.
If feedback is not received by the Contactor A Status N.O. input within 1 second of closing Contactor
A output relay, an OPEN CONTROL CIRCUIT alarm will occur. This will cause Contactor A output
relay to open.
In the case of a faceplate or process stop trip, the start signal to Terminal 43 should be removed if
restarting is not desired. When the MM2 reset key is pressed, the motor will be restarted based on
terminal 43.
The STOP button at the motor remains active in the auto mode.
GE Power Management
10.3 HAND/AUTO CONFIGURATION
10.3.1 3-WIRE HAND / 2-WIRE AUTO
MM2 Motor Manager 2
10
10-9