Curtis PMC 1297 Manual
57
C. SHARED PARAMETERS
In addition to the traction parameters and hydraulic parameters, there are a number
of parameters that affect both the traction and the hydraulic systems. These shared
parameters include the sequencing delay, various contactor parameters, the enable for
the multiplexer, and all the hourmeter and BDI parameters.
SEQUENCING DLY
The
sequencing delay
feature allows the interlock switch to be cycled within a
set time (the sequencing delay), thus preventing inadvertent activation of
various lockout features. This feature is especially useful in applications where
the interlock switch may bounce or be momentarily cycled during operation.
The sequencing delay parameter can be set from 0.0 to 3.0 seconds, with zero
corresponding to no delay.
Sequencing delay affects two traction features (HPD and SRO) and one
hydraulic feature (hydraulic inhibit).
MAIN CONT INT
The
main contactor interlock
parameter allows the OEM to define a dual switch
requirement to operate the vehicle. When this parameter is programmed On,
both the KSI input (J1 Pin 1) and the interlock input (J1 Pin 2) must be pulled
high (to B+) before the controller will engage the main contactor. The contactor
will open after the interlock switch is opened and the sequencing and contactor
delays expire. When this parameter is set to Off, only KSI input is required for
the main contactor to be engaged.
MAIN OPEN DLY
The
main contactor open delay
parameter is applicable only if the main
contactor interlock parameter has been set to On. The delay can then be set to
allow the contactor to remain closed 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 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.
MAIN CONT DIAG
The
main contactor diagnostics
parameter, when set to On, performs ongoing
checks to ensure that the main contactor has closed properly each time it is
3
C
— PROGRAMMABLE SHARED PARAMETERS: Sequencing Delay & Contactor
Contactor Parameters
Sequencing D elay Parameter