Argo-Hytos EL7-I Series, Instruction Manual

Page: 9 / 60

IN
+/- PN
NELINEARIZACE
OFFSET
1
0
RAMPA
GAIN
DITHER
DITHER
+
+
+
-
+
+
+
-
PWM
f
PWM
f
P
I
D
P
I
D
C1
C2
EL7-I_Pokyny_Instructions_Hinweise_19151_1en_de_cz_04/2021
Page 9
www.argo-hytos.com
7.3 Commissioning
By default, the electronics are configured according to the type key and, after correct connection, are functional and after the power supply is
applied, parameters can be set.
Caution!
When commissioning a proportional directional control valve with electronics, the necessary safety guidelines must be strictly
observed. To prevent uncontrolled device behaviour, all electrical and hydraulic circuits must be checked before connection to
the supply voltage. Appropriate measures must be taken for the case of an emergency shutdown.
7.4 Normal operation
The electronics are configured by the manufacturer according to the type key for immediate use.
By default, the analogue input is predefined
0 …10 V for single solenoid or ±10 V for others. For CANopen, the default setting is NODE ID 1
and the speed is 250 kbit/s. The default password for connection from the mobile application is 1234 (can be changed).
Caution!
When the power supply for the electronics is switched on, the command signal will activate after a short pause (1 -2 s). Care must
be taken to ensure that the command signal does not cause undesired function of the directional control valve in this case.
Green, red and blue LEDs are located under the electronics transparent lid. After connection, the green LED lights up, signifying the presence of
electrical voltage. If the green LED flashes, the supply voltage is too low (less than 9 V) or too high (greater than 32 V).
The blue LED indicates and active Bluetooth module. If it flashes, the electronics are ready to connect to the mobile application. It is not possible to
connect to it from another device at this time. The Bluetooth module can be deactivated in the application, in this case the blue LED will not light up
or flash and the electronics cannot be connected from the application. To reactivate, it is necessary to press the “Configuration button“ inside the
electronics. When pressed, the blue LED flashes and the device is ready to connect via Bluetooth.
The red LED indicates the error status of the electronics:
-
broken connection of coil to the electronics
- short circuit on the coil
- the command signal is out of the specified range
Digital electronics (see block diagram) is controlled by an internal program (firmware), which is stored in Flash memory. This program provides the
basic functions of electronics to meet the requirements of the user.
The manufacturer does not exclude the possibility of continuous firmware updates in order to optimize functional properties.
7.4.1 Block diagram EL7
IN type selection of input command signal (and controlled valve)
+/- polarity inverting of input command signal
PN insensitivity zone (dead band) setting
OFFSET position setting of the characteristic
GAIN
gain (amplification) setting
RAMP 0 - 45 s
DITHER 60 - 300 Hz / 0 - 30 % of the amplitude
PWM frequency 80 - 1000 Hz / 15 kHz when the dither is used
PID setting the PID controller parameters
C1, C2 coils of valve solenoids
Supply voltage 9 ... 32 V DC
Operating temperature -40 ... +80 °C (-40 ... +176)
Caution!
The electronics are the source of the PWM signal, so it is recommended to use cables with shielding.
Danger!
The electronics are designed to be supplied with a DC voltace in the range of 9 – 32V DC, do not connect the electronics to AC
voltage of any value or to DC voltage outside the permitted range. There is a risk of product destruction, damage to health or
property and fire.
Warning!
The electronics do not have a seperate signal or supply ground, the control signal source must be galvanically separated from the
power supply, otherwise the command signal and power supply will short circuit if the connection is incorrect!!! Check the correct
connection and setting of the input signal before putting the command signal source into operation.
The value of the electronics supply voltage must be higher than the value of the nominal voltage of the controlled solenoid.
NONLINEARIZATION
RAMP