Curtis 1253 - LED Diagnostics

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Curtis 1253 Manual, Rev. F
SS4 DELAY
e SS4 Delay parameter can be set to allow the SS4 output to continue for a
period of time after the SS4 switch is opened. e delay is useful for maintain-
ing power to auxiliary functions, such as a steering pump motor, that may be
used for a short time after the operator has gotten up from the seat. e SS4
delay can be set from 0.0 to 60.0 seconds, with 0.0 corresponding to no delay.
INTERLOCK DLY
e Interlock Delay parameter can be set to allow the PWM output to continue
for a period of time (the interlock delay) after the interlock switch is opened. e
delay is useful for maintaining power to auxiliary functions, such as a steering
pump motor, that may be used for a short time after the operator has gotten
up from the seat. e interlock delay can be set from 0.0 to 60.0 seconds, with
0.0 corresponding to no delay.
PRECHARGE
e Precharge parameter enables or disables the precharge function. Precharge
provides a limited current charge of the controller’s internal capacitor bank before
the main contactor is closed. is decreases the arcing that would otherwise
occur when the contactor is closed with the capacitor bank discharged.
Precharging and the precharge fault detection depend on the setting of
both the precharge and the contactor control parameters, as shown in Table 4.
Table 4 PRECHARGE FUNCTION AND FAULT DETECTION
PARAMETER SETTING
PRECHARGE PRECHARGE FAULT
PRECHARGE CONTACT CNTRL PERFORMED DETECTION
ON ON YES YES
ON off YES YES
off ON no no
off off YES no
PRECHARGE DLY
e controller can be programmed to delay for a set time at powering on before
charging the capacitor bank. e Precharge Delay parameter denes the delay
time; it can be set from 0 to 1000 ms.
3 — PROGRAMMABLE PARAMETERS: Contactor Control Parameters