Lift & Lower Switch Inputs - Kohler Curtis F Series Manual

Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022
Driver#_Accel_Rate
Driver#_Decel_Rate
100 %
Lower _Throttle
0 %
Figure 40
The Proportional Valve Signal Chain
Load_Hold_Enable-On_Lift
Pump_Throttle > 0%
0
Lower_Throttle > 5%
Figure 41
The Load Hold Valve Signal Chain
Lift & Lower Switch Inputs
This method uses the On/Off switch inputs to command the hydraulic throttle (Lift). Another On/
Off switch commands the Lower operation, where a designated coil driver is either fully off (load
Quick Links:
Fig. 13
p.17
hold) or fully on (lowering). In this method, the hydraulic throttle and lower are non-variable inputs.
Fig. 28
p.89
This is the illustrated "step function" ( ) in the figures 30 and 31 Throttle/Switch Mapping. In this
Fig. 29 p.90
Fig. 30 p.91 example, reference Figures 13 and 29-31. The Lift switch is Input 10 (pin 10). The Lower switch is
Fig. 31 p.91
Input 11 (pin 11). A load hold valve is used.
pg. 192
PD Max Current
PD Dither Period
PD Dither Percent
+% Dither
- % Dither
Dither Period
Accel/Decel Rate
Processing
Dither for Valve Anti-Stick
Proportional Valve Control
Load_Hold_Open_Delay
Count Up
(Tmr > Load_Hold_Open_Delay) ||
Tmr
1
(Load_Hold_Open_Delay = = 0)
0
Timer
0
1
Valve kept closed after pump ON to allow for pre-pressurizing
Load Hold Driver
PD Kp
PD Min Current
PD Max Current PD Ki
Max
2A
+
-
0A
Min
Ki
100
0
%
Current Mapping
Current PI Controller
PD_Current
Proportional Valve Driver
0
1
OR
0
0%
1
Load_Hold_Driver_Voltage
Function
Con guration Parameter
VCL Function/Variable
Run-time variable
Shutdown _ PD
or
ThrottleInvalid
or
(CANopen Interlock == ON
PD_Enable==On
and
CAN NMT State = Pre -Operational )
+
Kp
+
1
1
0
0%
0
Generic Proportional
Driver Switch
Shut-Down
Put_PWM(PWM5,xxxx)
Func�on
Configura�on Parameter
VCL Func�on/Variable
Run-�me variable
If any Hydraulic Faults Active
(Pump_HPD, HPD_Sequencing)
Load_Hold_Command
0
1
OFF
Load Hold Valve Hysteresis
6 — COMMISSIONING
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PD _Output
To Load Hold Driver