High Country Tek PLD, Powerline / universal single / dual coil PWM Valve Driver - Manual (Page 31)

Part No:- 021-00155 RevD7 PowerLine System Controller User Guide Page | 31
PowerLine User Guide
Coil Setup
Selection from Menu-> Coil Setup
Minimum and Maximum current
The user can adjust the minimum and maximum
current on a per coil basis. The current output will
not be commanded outside of these ranges when
the coil is on. This feature is useful as it allows for
valve ‘deadband’ to be reduced, making the
system more responsive to small commands
around the zero position or point of a command
source ( i.e. Joystick e.t.c. ). The software has a
limit of zero (0) for minimum and a limit of
3000mA for maximum current.
EDC ( Electronic Displacement Control ) Type Coil
This soft switch changes the PWM frequency to a lower setting for use with low current coils to allow for better
current regulation. Check this box when using EDC coils
Note, Adjusting the max current above recommended OEM values may damage the coil and will reduce the
resolution of the process control
Disable Coil B
This software switch disables coil ‘B’ output. Check this box when using as a single coil valve or uni-direction
motor or open circuit pump.
NOTE:
Always make sure to uncheck the ‘Disable Coil B’ tick box when using a dual coil valve or bi-
directional motor or closed circuit pump .
Dither Amplitude and frequency ( Hz )
Dither is commonly used to reduce the effects of valve hysteresis and stiction. These parameters can be
adjusted to suit the hydraulic product being controlled. Optimized values can typically be found in the
manufacturers datasheets.
IMPORTANT NOTE – DUAL COIL OPERATION:
The output of either ‘A’ or ‘B’ output will go from the respective ‘I Min’ setting to ZERO (0mA ) when
crossing through command mid-point. The valve outputs do NOT jump from one I Min to the other.