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Curtis 1222 Manual, os 15
2 9 J A N U A R Y 2 0 1 3 D R A F T
3 — PROGRAMMABLE PARAMETERS: Vehicle Configuration Parameters
VEHICLE CONFIGURATION: STEER CONTACTOR
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Contactor Control Type 0 – 2
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n
This parameter determines how the steer contactor is controlled.
0x4095 0x00 0 – 2 0 = No steer contactor (Contactor Driver = Off).
This setting is used when the 1222 B+ stud is wired to a battery
with no steer contactor. This setting is not recommended and
may not meet the required vehicle safety standards.
1 = Steer contactor controlled by contactor driver.
This is the recommended setting, and is used when the 1222 B+
stud is wired to a steer contactor. Type 1 requires programming
the Pull-in Voltage, Holding Voltage, Open Delay, and Checks
Enable parameters.
2 = Steer contactor controlled by traction controller (Cont. Driver = Off).
This setting is used in systems that have only one main contactor
to supply both the traction controller and the 1222. In these sys-
tems, the traction controller must tell the 1222 that the contactor
is open or closed in the CAN PD01 message.
Pull-in Voltage 0 – 80.0 V The contactor pull-in voltage parameter allows a high initial voltage
0x4061 0x00 0 – 800 when the contactor driver first turns on, to ensure contactor closure.
After 1 second, the pull-in voltage drops to the steer contactor holding
voltage.
Note: The pull-in voltage is always battery voltage compensated.
Holding Voltage 0 – 80.0 V
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n
The contactor holding voltage parameter allows a reduced average
0x4062 0x00 0 – 800 voltage to be applied to the contactor coil once it has closed.
This parameter must be set high enough to hold the contactor closed
under all shock and vibration conditions the vehicle will be subjected to.
Note: The holding voltage is always battery voltage compensated.
Open Delay 0 – 40 s The open delay can be set to allow the steer contactor to remain closed
0x4060 0x00 0 – 40 for a period of time (the open delay) after the interlock is turned off.
The delay is useful for preventing unnecessary cycling of the
contactor and for maintaining power to auxiliary functions that may still be
used for a short time after the interlock has turned off.
Checks Enable 0n / Off When programmed On, the controller performs ongoing checks to ensure
0x4067 0x00 On / Off that the steer contactor has closed properly each time it was commanded to
do so, and that it has not welded closed.
These checks (Contactor Welded and Contactor Did Not Close) are not
performed if the parameter is programmed Off.The contactor driver, however,
is always protected from short circuits.
Sequencing Delay 0 – 5.0 s The sequencing delay feature allows the interlock switch to be cycled
0x4063 0x00 0 – 50 within a set time (the sequencing delay), thus preventing inadvertent
deactivation of the steering control. This feature is useful in applications
where the interlock switch may bounce or be momentarily cycled during
operation.
PCF
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