3 — PROGRAMMABLE PARAMETERS
pg. 55
Return to TOC Curtis Model 1351 – December 2018
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
Initial Time
Driver_X_Hold_Time
Parameter’s CAN Index by
Driver_X_Hold_Time
1 = 0x3160 0x00
2 = 0x3161 0x00
3 = 0x3162 0x00
4 = 0x3163 0x00
0 – 10000 ms
0 – 10000
0 ms
0
The time the Initial Level is applied.
X= 1 – 4 for the VCL name Driver_X_Hold_Time
This parameter allows customization of the driver’s initial-level
parameter duration, before any ramping to the longer-term
command percentage.
Fault Check
Driver_X_Checks_Enable
Parameter’s CAN Index by
Driver_X_Checks_Enable
1 = 0x31B0 0x00
2 = 0x31B1 0x00
3 = 0x31B2 0x00
4 = 0x31B3 0x00
Off
Static
0
1
0
0
Off = 0
Static = 1
X= 1 – 4 for the VCL name Driver_X_Checks_Enable
When ON, the 1351 will check the voltage at the output pin to see
if it matches the current status of the driver. If the driver is Off,
the output pin should read near battery voltage, otherwise, there
is a fault from the load being disconnected/open or the FET being
shorted
Current Control This menu is Context Enabled: Visible only when Control Mode = Current Cntrl
Max Current
Driver_X_Max_Current
Parameter’s CAN Index by
Driver_X_Max_Current
1 = 0x3110 0x00
2 = 0x3111 0x00
3 = 0x3112 0x00
4 = 0x3113 0x00
0 – 3000 mA
0 – 3000
0 mA
0
Maximum current that the 100% command will effectuate.
X= 1 – 4 for the VCL name Driver_X_Max_Current
Reference the Driver_X_Command.
Min Current
Driver_X_Min_Current
Parameter’s CAN Index by
Driver_X_Min_Current
1 = 0x3120 0x00
2 = 0x3121 0x00
3 = 0x3122 0x00
4 = 0x3123 0x00
0 – 3000 mA
0 – 3000
0 mA
0
Minimum current that a 0.1% command will effectuate. A value of
0 will turn off the driver.
X= 1 – 4 for the VCL name Driver_X_Min_Current
Reference the Driver_X_Command.
Dither Period
Driver_X_Dither_Period
Parameter’s CAN Index by
Driver_X_Dither_Period
1 = 0x3180 0x00
2 = 0x3181 0x00
3 = 0x3182 0x00
4 = 0x3183 0x00
2 – 1000 ms
2 – 1000
1000 ms
1000
Periodicity (frequency) of the applied dither.
X= 1 – 4 for the VCL name Driver_X_Dither_Period
Dither provides a small amount of cyclically changing current
to vibrate the solenoid and thus keep it from “sticking” in one
position. Without dither, it is harder to make small adjustment in
the proportional valve position. Dither has both a frequency and
amount.
Dither Amount
Driver_X_Dither_Amount
Parameter’s CAN Index by
Driver_X_Dither_Amount
1 = 0x3170 0x00
2 = 0x3171 0x00
3 = 0x3172 0x00
4 = 0x3173 0x00
0 – 100 %
0 – 32767
0 %
0
The percent of the Driver_1_Max_Current parameter that is
applied above and below its set point.
X= 1 – 4 for the VCL name Driver_X_Dither_Amount
Note, the driver measures current just before the PWM is shut off,
therefore there is a lower limit where the current cannot be read.
For the low side drivers, this is 8% (for HB drivers in low-side
mode, this is 12%). The system designer should make sure that
the load resistance, the coil return voltage supply, and minimum
current will remain valid keeping the driver PWM above these
values for good regulation.
0% disables the dither function.
OUTPUTS — PWM DRIVERS, cont’d
To Next Page
Loading...
Need help?
General