Operation and maintenance instructions
Series PME CANopen proportional pressure
regulator
5000054187
Ver. 01
54
11.5.1.7.
2009h PID Custom Parameter
If PID CUSTOM is enabled (value 3 in object 2008h), then the control algorithm uses those
parameters for controlling the pressure.
Those parameters are subdivided into UP and DOWN, which means that when the PRE should
increment the pressure, the PID takes the values relative to the UP, DOWN otherwise. If the user is
not confident with differencing the values, they might be set equal both for UP and DOWN.
ATTENTION: the system could be instable if you use values too high. Increase carefully the K
parameters values. Do not create a system instability. The mechanical and electronic internal
components could be damage. Avoid continuously oscillations of regulator (you hear a hammered
noise). In this case decrease the K parameters values in order to eliminate the oscillations.
KP stands for “proportional gain”.
KI stands for “integral gain”.
KD stands for “derivative gain”.
11.5.1.8.
220Bh Numerator multiplier
This parameter, in combination with the 22C0h, allows you to change the unit of measurement for
pressure used to read and write dictionary objects and PDOs. The default unit of measurement is
mBar. This object divides all exchanged pressure-related parameters by its value. For example, to
change the unit of measurement from mBar to kPa, it is necessary to set the numerator (object
220Bh) to 1 and the denominator (object 22C0h) to 1.
11.5.1.9.
220Ch Denumerator multiplier
This parameter, in combination with the 22B0h, allows you to change the unit of measurement for
pressure used to read and write dictionary objects and PDOs. The default unit of measurement is
mBar. This object divides all exchanged pressure-related parameters by its value. For example, to
change the unit of measurement from mBar to kPa, it is necessary to set the numerator (object
220Bh) to 1 and the denominator (object 22C0h) to 1.
11.5.1.10.
200Dh Error code
This object contains the error code. Each bit indicates a different error type:
•
Bit 0, alarm internal error;
•
Bit 1, alarm memory error;
•
Bit 2, alarm pressure sensor;
•
Bit 3, alarm solenoid fault;
•
Bit 4, warning internal;
•
Bit 5, warning memory;
•
Bit 6, warning pressure;
