Warning!
When the PID controller is switched off, the device may behave unexpectedly, and the set maximum current to the coil may be
exceeded long-term.
Care must be taken to prevent unitentional or dangerous behaviour of the device.
Caution!
Incorrect setting of PID paramters will have a negative impact on the behaviour, properties and capabilities of the directional control
valve. Care must be taken not to change parameters at random.
To set the PID parameters correctly, use manufacturer application, free to download at
www.argo-hytos.com
EL7-I_Instructions_Hinweise_Pokyny_19151_3en_de_cz_07/2022
Page 17
www.argo-hytos.com
- the electronics are equipped with two separate PID controllers, each of which controls one coil.
- the regulator is set at the manufacturer with regard to stabilty for the widest possible group of coils.
It may vary for a particular coil type. The default setting is
P=0, I=1,2, D=0
, this setting is suitable for
most applications.
- to determine parameters, with regard to other properties of the coil or system dynamics, it is possible
to use the configuration tool s-el7-regSim, downladable from the A-H portal.
This application is a model of the EL7 electronics controller and after entering the parameters it displays
the course of the frequency characteristics.
It is possible to calculate the value of the I component of the controller from the entered parameters.
see application instruction
PID controller
- with active selection, the current to the coils will be disconnected if the analog input control signal is
significantly exceeded or undershot. When the control signal returns to a valid value, current to
the coils will be restored.
- When the option is inactive, if the analog input control signal is exceeded or undershot, the current
to the coils will be maintained and is limited to the maximum current setpoint.
Start delay
- delays the start of the current to the coils after connecting the electronics to the supply voltage by
the specified value.
During this time, the coils will not be excited and the electronics will not respond to input signals.
The delay can be set from 0.5 - 10 s.
Shut down after input error
The start delay function is used for cases when the higher-level control systems, typically PLC output cards, are not yet active after
power is connected, when random control states can occur on the electronics input and cause unexpected circuit behavior.
Delaying the start-up of the electronics allows time for the parent control systems to prepare.
