Curtis 1230 Manual, Rev. C
41
3 — PROGRAMMABLE PARAMETERS: Hydraulics Parameters
HYDRAULICS MENU
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Lift PV Max 0–100 % Defines the PWM output to the proportional valve for a Lift request with full
hydraulic throttle applied. Lower values provide faster Lift, by allowing less
of the hydraulic fluid to be diverted from the Lift operation.
Lift PV Min 0–100 % Defines the PWM output to the proportional valve for a Lift request with
minimal hydraulic throttle applied. Higher values provide slower Lift, by al
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lowing more of the hydraulic fluid to be diverted from the Lift operation.
If variable Lift is not desired, set Lift PV Max and Lift PV Min to the
same value.
Lift PV Accel Rate 0.0–10.0 sec. Defines how long it will take the valve current to decrease from 100% to
0% (from fully open to fully closed) during Lift operation.
Lift PV Decel Rate 0.0–10.0 sec. Defines how long it will take the valve current to increase from 0% to
100% (from fully closed to fully open) during Lift operation.
Lower PV Max 0–100 % Defines the PWM output to the proportional valve for a Lower request with
full hydraulic throttle applied. Higher values result in faster Lower opera
-
tion, by providing a larger aperture for draining the hydraulic fluid.
Lower PV Min 0–100 % Defines the PWM output to the proportional valve for a Lower request with
minimal hydraulic throttle applied, when Variable Lower is set to On. Lower
values result in slower Lower operation, by providing a smaller aperture for
draining the hydraulic fluid.
If variable Lower is not desired, set Lower PV Max and Lower PV Min
to the same value.
Lower PV Accel Rate 0.0–10.0 sec. Defines how long it will take the valve current to increase from 0% to
100% (from full closed to fully open) during Lower operation.
Lower PV Decel Rate 0.0–10.0 sec. Defines how long it will take the valve current to decrease from 100% to
0% (from fully open to fully closed) during Lower operation.
PV Dither 0–30 % Dither provides a constantly changing current in the coil to produce a rapid
back-and-forth motion of the valve; this keeps the PV lubricated and allows
low-friction, precise movement. The PV Dither parameter specifies the
amount of dither as a percentage, and is applied in a continuous cycle of
none-add%-none-subtract%.
For nonproportional valves, where the valve’s opening and closing is
spring-activated, dither is not applicable. If your application uses this type
of valve, set the PV Dither parameter to 0%.
Pump Start Delay 0–200 msec. Defines a delay before the pump is started when a new lift action is re
-
quested. The actuation of the valves is not affected by this parameter.
Pump BDI Lockout
OFF/ON When programmed On, Lift requests will be ignored as long as the battery
state-of-charge is below 20%. When programmed Off, the Lift will continue
operating until the undervoltage cutoff point is reached.
continued
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