Curtis 1243
GEN
2 Manual
40
FIELD CHECK
The
field check
parameter determines whether the
fi
eld diagnostics will be active.
When programmed On, the controller checks for
fi
eld open and
fi
eld shorted faults.
This parameter is typically programmed On except in series motor applications,
or where the motor resistance is too high to provide valid fault data.
MAIN CONT INTR
The
main contactor interlock
parameter allows the OEM to de
fi
ne a dual
switch requirement to operate the vehicle. When this parameter is programmed
On, the controller requires that both KSI (Pin 16) and the interlock input
(Pin 15) be pulled high (to B+) before the controller will engage the main
contactor. The main contactor will open after the interlock switch is opened and
the sequencing delay expires. If this parameter is programmed Off, only the KSI
input is required for the main contactor to be engaged.
After changing the main contactor interlock setting, KSI must be cycled
for the new setting to take effect.
MAIN OPEN DLY
The
main contactor open delay
parameter is applicable only if the main
contactor driver interlock has been programmed On. The delay can then be set
to allow the contactor to remain engaged for a period of time after the interlock
switch is opened. The delay is useful for preventing unnecessary cycling of the
contactor and for maintaining power to auxiliary functions, such as a steering
pump motor, that may be used for a short time after the interlock switch has
opened. The main contactor open delay is programmable from 0 to 40 seconds.
After the interlock switch is opened, the programmed sequencing delay
must expire before the main contactor open delay timer starts counting.
Therefore, the time between the interlock switch opening and the main
contactor disengaging is the sum of the sequencing delay and the main contactor
open delay (see Figure 14, page 29.)
CONT DIAG
The
main contactor diagnostics
parameter, when programmed On, enables
two checks to verify that the main contactor is present and that it has not welded
closed. Each time the main contactor is commanded to engage, the controller
fi
rst performs a main contactor welded test to verify that it is not already closed.
The controller then engages the contactor and performs a missing contactor test
to con
fi
rm that the contactor successfully engaged.
These checks are not performed if the main contactor diagnostics param-
eter is programmed Off. The main contactor driver, however, is always pro-
tected from overcurrents, short circuits, and overheating.
3 — PROGRAMMABLE PARAMETERS:
Main Contactor Parameters
Main Contactor Parameters
