Operation and maintenance instructions
Series PME CANopen proportional pressure
regulator
5000054187
Ver. 01
27
10.3.1.
User setup
•
Pid Mode: serves to set the PID gains according to the air volume used. The available values are:
SET1 (SLOW, suitable for small volumes), SET2 (MEDIUM, suitable for medium volumes), SET3
(FAST, suitable for big volumes) or SET4 (CUSTOM).
•
Dead band: when this parameter is set to a value higher than 0, the regulator will not make any
adjustment as long as the absolute error of the regulated pressure (difference between the
regulated pressure and the target pressure) remains lower than the set dead band value (red
line).
On the other hand, when the absolute error of the regulated pressure exceeds the value of the
set dead band, the regulator returns to carry out normal regulation (green line).
This operating mode makes it possible to avoid continuous adjustments by the regulator,
increasing its life cycle. On the other hand, the achievement of the target pressure according to
the declared performance is not guaranteed: the adjusted pressure error will depend directly
on the dead band value set.
•
Protection Timeout: sets the inactivity time of the regulator when the target pressure is not
reached before the expiration of the Pressure regulation timeout. During the period of inactivity,
the regulator maintains the current pressure without trying to reach the target pressure. After
this inactivity time has expired, the regulator will try again to reach the target pressure. Use this
parameter if you want to avoid that the regulator keeps the internal valves activated for too
long, reducing their expected lifetime. If the parameter is 0, the function is disabled.
•
Internal sensor filter cutoff: this parameter sets the cutoff frequency [Hz] of the digital filter
applied to the internal sensor signal. Use this parameter to eliminate noise in the regulated
pressure signal. A big value of this parameters increases the time response of the regulator. If
the value of this parameter is 0, the filter is disabled.
•
Pressure regulation check mode: Sets the type of event, warning or alarm, in case the regulated
pressure doesn’t reach the target value.
See parameter “Pressure regulation check timeout”. In
the event of a warning, pressure regulation is not interrupted; on the other hand, in the event
of an error, pressure regulation is interrupted.
•
Pressure regulation check timeout: enables to control the regulated pressure. This control is
similar to the "window" function of the digital output (for more details regarding this function,
refer to paragraph "Digital output"): the regulator checks if the regulated pressure reaches the
pressure target within a certain settable time (Pressure regulation timeout). This control uses
the values "Negative window level" and "Positive window level" to determine the tolerance
range on the regulated pressure.
D
ead
band
D
ead
band
Regulation
Target pressione
No Regulation
Regulation
