TUG MZ Operation Maintenance & Parts Manual page 401

Curtis 1234/36/38 Manual,
1 1 J U LY 2 0 0 8 D R A F T
To add automatic fault actions to the VCL faults, the VCL program-
mer must define the desired fault actions by using the sixteen VCL variables:
User_Fault_Action_01 through User_Fault_Action_16. Each of the UserFault
bits has a corresponding User_Fault_Action_xx variable (where "xx" is the
number of the VCL fault bit). When a VCL fault bit is set, the actions defined
in the corresponding User_Fault_Action_xx variable will be automatically
executed by the operating system. Here are the fault actions available in the
User_Fault_Actions_xx variables:
VARIABLE
User_Fault_Action_xx
* Bit0 = ShutdownMotor
* Bit1 = ShutdownMainContactor
* Bit2 = ShutdownEMBrake
* Bit3 = ShutdownThrottle
* Bit4 = ShutdownInterlock
* Bit5 = ShutdownDriverl
* Bit6 = ShutdownDriver2
* Bit7 = ShutdownDriver3
* Bit8 = ShutdownDriver4
* Bit9 = ShutdownPD
* Bit10 = FullBrake
* Bit11 = ShutdownPump
* Bit12 = TrimDisable
* Bit13 = SevereDual
* Bit14 = ShutdownSteer
* Bit15 = LOSDual
The User_Fault_Action_xx variables should be set up at the beginning of a
VCL program (before the main loop) as these fault actions should be defined
only once in a program. Here is another example:
User_Fault_Action_02 = 24
MainLoop:
if (BDI_Percentage < 10)
{
UserFault1.2 = ON
Put_Spy_Text("BDI Low")
}
else
{
UserFault1.2 = OFF
}
goto MainLoop
This time when UserFault1.2 is set, the operating system will ShutdownInterlock
and ShutdownThrottle (which will result in a Throttle_Command = 0%) in
Rev. D
FAULT ACTION
Disable the motor
Shut down the main contactor
(only if Main Enable = On)
Shut down the EM brake
(only if EM Brake Disable Upon
Fault = On)
Set the Throttle_Command = 0%
Set the Interlock_State = Off
Shut down Driver1
Shut down Driver2
Shut down Driver3
Shut down Driver4
Shut down Proportional Driver
Set the Brake_Command = 100%
Shut down DC pump
Disable Dual Drive trim
calculation.
For Dual Drive system, one con-
troller has a severe fault but
the main contactor must stay
closed so the other controller
can continue to operate.
Steer angle = 0°
For Dual Drive system, set the
max speed to Dual_LOS_Max_Speed
parameter for operation in
Limited Operating Strategy.
;Set fault action to ShutdownInterlock
;and ShutdownThrottle
;Set User Fault bit
;Send message to Model 840 display
;Clear User Fault bit
7 — VCL
101