Vehicle Configuration: Steer Contactor - Curtis 1222 Manual

3 — PROGRAMMABLE PARAMETERS:
ALLOWABLE
PARAMETER RANGE
Contactor Control Type 0 – 2
0x4095 0x00 0 – 2
Pull-in Voltage
0 – 80.0 V
0x4061 0x00 0 – 800
Holding Voltage 0 – 80.0 V
0x4062 0x00 0 – 800
Open Delay 0 – 40 s
0x4060 0x00 0 – 40
Checks Enable
0n / Off
0x4067 0x00 On / Off
Sequencing Delay
0 – 5.0 s
0x4063 0x00 0 – 50
44
2 9 J A N U A R Y 2 0 1 3 D R A F T
Vehicle Configuration Parameters

VEHICLE CONFIGURATION: STEER CONTACTOR

n
•
This parameter determines how the steer contactor is controlled.
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.
The contactor pull-in voltage parameter allows a high initial voltage
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.
n
•
The contactor holding voltage parameter allows a reduced average
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.
The open delay can be set to allow the steer contactor to remain closed
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.
When programmed On, the controller performs ongoing checks to ensure
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.
The sequencing delay feature allows the interlock switch to be cycled
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.
DESCRIPTION
Curtis 1222 Manual,
os 15