Newman 4VAL - Page 51

4VAL Operating & Maintenance Manual Version 1.1 © Newman Labelling Systems Ltd Page 51 of 56
4VAL FAULT DIAGNOSIS - ELECTRICAL
POWER TO
BARCODE
PRESENT?
CHECK FUSE FU1
CHECK FUSE IN EVALUATION UNIT
MAINS POWER
PRESENT?
CHECK FOR MAINS VOLTAGE AT ISOLATOR ISOL1
CHECK FOR VOLTAGE AT CIRCUIT BREAKER CB1
CHECK MAINS FILTER OUTPUT VOLTAGE FLT1
CHECK VOLTAGE AT TRANFORMER (IF FITTED)
CHECK MAIN FUSE F1
NO
YES
NO
24V POWER
SUPPLY OK?
CHECK MAIN FUSE F1
CHECK SECONDARY SIDE OF PSU FOR 24 VDC
YES
POWER TO
CODER
PRESENT?
CHECK FUSE FL2
CHECK FUSE IN CODER POWER SUPPLY UNIT
CHECK FUSE FMD1
YES
NO
NO
YES
POWER TO
ECR ?
POWER TO
PLC?
YES
NO
POWER TO
MOTOR
DRIVES?
CHECK EMERGENCY STOP BUTTONS ARE RELEASED
CHECK FUSE FU1
CHECK EMERGENCY STOP CIRCUIT FOR CONTINUITY
CHECK FUSE FU1
NO
YES
NO