Main Coil Open Check - Curtis 1244 User Manual

3 — PROGRAMMABLE PARAMETERS:
44
Output Driver Parameters
parameter can then be set to allow the main contactor to remain closed for
a period of time after the interlock switch is opened. The delay time is pro-
grammable from zero to 40 seconds, in 1 second intervals. The delay is useful
for preventing unnecessary cycling of the main contactor and for maintaining
power to auxiliary functions, such as a steering pump motor, that may be used
for a short time after the brake has been applied or the operator has gotten up
from the seat.
MAIN ChECK
The main coil open check parameter defines whether the controller performs
missing coil checks to ensure that the main contactor has closed properly.
When this parameter is set to "On," the controller senses the voltage at the
main driver input (Pin 17) to confirm that the main contactor coil is properly
connected, and also tests that the main contactor has indeed closed each time
it is commanded to do so. If the criteria for either of these tests are not met,
the controller will inhibit operation and issue a fault. Neither of these tests is
performed if the main check parameter is set to "Off."
wELD ChECK
The main contactor weld check parameter defines whether the controller tests
the main contactor to ensure that it is not welded closed. If the weld check
parameter is set to "On," this check is performed when the keyswitch is first
engaged and then each time the main contactor is commanded to open. This
check is not performed if the parameter is set to "Off."
AUx DELAy
The auxiliary driver dropout delay parameter can be set to allow the auxiliary
driver to remain active for a period of time after the interlock switch is opened.
The delay time is programmable from 0 to 10 seconds, in 0.1 second intervals.
note: The auxiliary driver dropout delay parameter is applicable only if
the accessory driver enable has been specified "On." The accessory driver enable
is a factory-set parameter, and is described in Section 4.
AUx ChECK
The auxiliary coil open check parameter defines whether the controller per-
forms missing coil checks on the auxiliary driver output. When this parameter
is set to "On," the controller senses the voltage at the auxiliary driver output
(Pin 18) to confirm that the auxiliary contactor coil is properly connected. If
Curtis 1244 Manual,
Rev. E