IFM Electronic Ecomat Mobile Series System Manual page 184

PWM in the ecomatmobile controller
If the function input MANUAL is set to "0", the controller is always self-optimising. The performance of
the controlled system is permanently monitored and the updated compensation values are
automatically and permanently stored in each cycle. Changes in the controlled system are immediately
recognised and corrected.
Info
Input X of the function CONTROL_OCC should be supplied by the output of the JOYSTICK functions.
Parameters of the function inputs
Name
ENABLE
INIT
R_RAMP
F_RAMP
TIMEBASE
X
XH
XL
MAX_CURRENT
MIN_CURRENT
TOLERANCE
CHANNEL
PWM_FREQUENCY
DITHER_FREQUENCY
DITHER_VALUE
MODE
184
ifm System Manual ecomatmobile
Data type Description
BOOL TRUE: function is executed.
FALSE: function is not executed.
BOOL TRUE: function is initialised, 1st cycle.
FALSE: during processing of the program.
INT Rising edge of the ramp
in [increments/PLC cycle] or [increments/TIMEBASE].
0 = without ramp
INT Falling edge of the ramp in
in [increments/PLC cycle] or [increments/TIMEBASE].
0 = without ramp
TIME Reference for rising / falling edge of the ramp:
t#0s = rising / falling edge in [increments/PLC cycle]
else = rising / falling edge in [increments/TIMEBASE]
WORD Input value in [increments].
Standardised by function NORM_HYDRAULIC.
WORD Max. input value in [increments].
WORD Min. input value in [increments].
WORD Max. valve current in [mA].
WORD Min. valve current in [mA].
BYTE Tolerance for min. valve current in [mA].
When the tolerance is exceeded, jump to MIN_CURRENT is
effected.
BYTE 0...x
WORD PWM frequency for the connected valve in [Hz].
WORD Dither frequency in [Hz].
BYTE Amplitude of the dither value in [%] of MAX_CURRENT.
BYTE Controller characteristics:
0 = very slow increase, no overshoot
1 = slow increase, no overshoot
2 = minimum overshoot
3 = moderate overshoot permissible
SmartController (CR2500) V05
PWM output channel (values depend on the device).
Hydraulic control in PWM