6 — COMMISSIONING
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Return to TOC Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022
14. Assign the Lower_Driver parameter (CAN Index 0x4FCC 0x00) to the driver operating
the hydraulic lowering valve, Driver 1. is is the proportional driver. Set the other driver
parameters to match the application following the valve manufacturer’s ratings. e hydraulic
system conguration will be as illustrated in Figure 28.
Lower_Driver = 1
Lower_Deadband_Percent = 15% (default)
Lower_Decel_Rate = 0.1 sec (default)
Lower_Oset = 0% (default)
Driver_1_Dither_Percent
Driver_1_Dither_Period
15. If the application uses a hydraulic load hold valve, set the Load Hold Valve Enable On Li
parameter On; otherwise set it O.
Application Setup » Hydraulics » Load Hold Valve Settings » Load Hold Valve Enable On Lift
16. Set the load hold driver to 3.
Load Hold Driver = 3
Controller Setup » IO Assignments » Coil Drivers » Load Hold Driver
To prevent an accidental turn-on of the hydraulic system and peripherals at startup/key-cycle,
adjust the parameters Pump Interlock Source, Hydraulics_Inhibit_Type, and the Sequencing
Delay to match the application.
17. To enable the Li via switches and Lower via Analog 18, set the pump interlock parameter.
Pump Interlock Source = 0
CIT List View » Pump Interlock Source
18. Set the Hydraulics_Inhibit_Type to match the application. This parameter is in the CIT
Programmer “at list”.
0 = Diagnostics are disabled.
1 = Li Only. e li throttle is stuck high (> 25%) at startup.
2 = Lower Only. e lower throttle is stuck high (> 25%) at startup.
3 = Both. e Li or the Lower throttles are stuck high (> 25%) at start up.
e hydraulics inhibit fault diagnostics can detect a stuck-high hydraulic throttle condition
(>25%) at startup. For the switch inputs, this occurs when the switch is asserted (i.e., 100%).
e diagnostics are congurable (as above) to detect either the li throttle chain, lower throttle
chain or both. e diagnostics begin execution aer a congurable delay set by the Sequencing
Delay aer a KSI turn-on (cycle). e diagnostics stop execution aer a period of 64msec. is
startup delay is for allowing momentary KSI disruptions or quick KSI cycling. Prior to the
inhibit fault diagnostic, the controller processes the Sequencing Delay parameter.
19. e Sequencing Delay works to prevent inadvertent activation of HPD/SRO, which are traction
throttle based. To account for the Hydraulics_Inhibit_Type, add 64ms to compute the total delay
before the hydraulic operation will commence.
Application Setup » Throttle » Sequencing Delay