Garland MWE2W Installation, Operation & Service Manual page 50

INSTALLATION/OPERATION & SERVICE MANUAL - 1&2 PLATEN
ERROR MESSAGES/TROUBLESHOOTING
DISPLAYED
MEANING
MESSAGE
No temperature increase
HEAT ERROR
within 425 seconds after
PLATEN/GRILL
dropping below set point
One of fi ve errors
MOTOR GEN associated with the motor
ERR or motor control board
has occurred
MOTOR ENCOD The encoder has "jumped"
ERR or missed a pulse
Motor current exceeded
MOTOR OVER 4 amps (software is
AMPS protecting motor speed
control board)
The encoder has detected
MOTOR CLS
31 counts below the
STOP
"zero" reference point
Controller detects that
MOTOR SPD ERR
the platen is not moving
The DC voltage on the
MOTOR BUSLV
motor control board
ERR
dipped below 95 vdc
The DC voltage on the
MOTOR BUSSV motor control board
ERR is either under or over
preset limits
The maximum or
MOTOR PINCH minimum platen speed
ERR diff erence is greater than
a preset value
The motion values for
MOTOR MSE
the platen have been
ERR
exceeded
MOTOR SPEED No level speed after 750
ERR
Page 50
POSSIBLE CAUSES
Shorted temperature sensor
Solid state relays are not on
Loss of power to platen
Operational procedures not being
followed (e.g. no scraper and squeegee)
Communication problem between motor
control board and the main controller
Motor control board timing is interrupted
Loose wirning on encoder
Loose encoder connection at the motor
Unstable power source
Interference within lift mechanism
Lower limit switch not in correct position
Platen adjustment has become loose
Loose encoder or motor connections
Incoming voltage drop from AC source
Transient voltage issue
Incoming voltage drop or surge from AC
Transient voltage issue
Obstruction to platen movement
Interference with the lift mechanism
Obstruction to platen movement
Interference with the lift mechanism
Obstruction to platen movement
Interference with the lift mechanism
msec
GARLAND CLAMSHELL GRILLS WITH PRODUCT RECOGNITION
or not correct
or defective
Actuator failure
source
Encoder error
Encoder error
Encoder error
(continued)
POSSIBLE SOLUTION
Continuity check to ground
Verify harness connections to controller
Check operation of main contactors
Review procedures when message is displayed
Check cabling between encoder & motor speed
controller & between motor speed controller & main
controller
Cycle main power OFF and ON
Check wiring connections
Check wiring and assembly of encoder
Check incoming voltage
Check for platen obstructions
Clean excess grease from actuator shafts
& replace seals if necessary
Clean grill daily per operational instructions
Recalibrate lower limit switch operation to the correct
"zero" position, check for proper limit switch operation
Check fasteners on key lift components
Check actuator function and replace if defective
Check all connections on motor speed control board
and the actuator motor
Recycle main power to grill to reset motor speed
controller settings
Measure incoming voltage where motor connects to
motor control board
Recycle main power to grill to reset motor speed
controller settings
Measure incoming voltage where motor connects to
motor control board
Check for platen obstructions
Clean excess grease from actuator shafts and replace
seals if necessary
Check encoder wiring connections
Clean grill daily per operational instructions
Check for platen obstructions
Clean excess grease from actuator shafts and replace
seals if necessary
Check encoder wiring connections
Clean grill daily per operational instructions
Check for platen obstructions
Clean excess grease from actuator shafts and replace
seals if necessary
Check encoder wiring connections
Clean grill daily per operational instructions
PART #4527466 (12 Aug 2011)