Pinguely-Haulotte HA20PX, Repair Manual

Page: 146 / 282

BREAKDOWN DETECTION FLOW CHART
Sheet DP032
NO MACHINE TRAVEL MOVEMENT
Setpoints:
HM4 = 12V
SM4ab = 0V
Open the turntable control panel and check
connection of PVG travel connectors (25 and 26)
NO
YES
END
Replace the manipulator
HM4
See Fiche
C045
While maintaining the fail-safe (HM4),
activate the travel manipulator SM4 and
check the setpoint at output Y of the
manipulator SM4
Setpoints:
Forward = 2.5 to 4.5V
Reverse = 2.5 to 0.5V
SM4ab = 12V
NO
YES
Check for setpoints at inputs 29.2,
29.3 and 29.4 of the U1 electronic
module
END
Replace the manipulator
HM4
Activate the fail-safe HM4 alone and check
for voltage at HM4 output and no voltage at
SM4ab output
See Fiche
C045
A
Connections
OK
NO
YES
END
Reconnect the
connectors
C
Check operation of the travel manipulator
SM4
Folio 2/4