Haulotte HA26 RTJ PRO SW - Page 89

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89 4000662720 E 06.17 USA / EN
C - Study of the electric schematics
HA26 RTJ O - HA26 RTJ O SW - HA26 RTJ PRO - HA26 RTJ PRO SW - HA80 RTJ O - HA80 RTJ PRO
PS011
When overriding switch is activated with turret controls selection :
• The membrane switch ECU U107 controls the locking of KA6 relay.
• The locking of KA6 switches the power supplies to ON state.
• The SPU checks the state of overriding mode and platform emergency stop. If platform emergency stop
and overriding switch are activated, the KA6 relay is locked in active state for 8s (to avoid power supply
fast ON/OFF).
VAR[OverridingMode] = 1 & SB802 = 1 --> T8s(KA6 = 1).
PS012
The state of KA6 relay is checked :
If platform emergency stop is pushed and power is on and KA6 is not read as been locked on, it means
that KA6 relay is stuck. The failure F03.07 is raised and all movements are inhibited.
KA6 = 0 & SB802 = 1 & VAR[PowerOn] = 1 --> F03.07(A.
PS013
The state of the supplies input for U106 and U104 ECU is checked to detect incoherence or overvoltage.
The failure F08.05 rises in these cases (out of range on the 5V supply)
REQUIREMENTS DEFINITION