ELECTRONIC REGULATORS

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YVPC ELECTRONIC REGULATOR FOR PWM CONTROLLED SOLENOID

 

This electronic regulator is made to work in open loop control system. It has been designed
to control the current that flows in the coil of a solenoid valve proportionally to an analog input
signal. The electronic card is contained in a box that works as connector too.

TECHNICAL SPECIFICATIONS:

Supply voltage 24 - 12 Vdc
Voltage input signal range 0 - 10 Volt (0 - 5V)
Input impedance 100 Kohm
Max current adjustment range 1A (24Vdc) 2A (12 Vdc) 20 - 100%
Bias adjustment range 0 - 30%
Rise time ramp adjustment 0 - 3 sec
Fall time ramp adjustment 0 - 3 sec
Ramps are linear and independent
PWM frequency set at 120 Hz (adjustable) 50 ÷ 400 Hz
Working room temperature -10 C ÷ +50 C • -50°÷122°F
YVPP2 ELECTRONIC REGULATOR FOR PWM CONTROLLED SOLENOID

TECHNICAL SPECIFICATIONS:

Supply voltage (Vsup)     10.5 ÷ 30 VDC
Panel potentiometer     5KOhm - 330°
Max output current     2.5A
Max current gap (Imax - Imin)     1.5A
Max power     75W
Ramp time adjustment     0.1 ÷ 5 sec
Indirect current measure     1V = 1A
PWM frequence     120 Hz (adjustable from 50 to 330 Hz)
Working temperature     -10 °C ÷ +60 °C • -50°÷122°F
Weight     250 g [0.55 lbs] Back panel dimensions     85x47x86 mm [3.35x1.85x3.39 in] Max panel thickness     10 mm [0.39 in] Special version available with IP67 potentiometer
DESCRIPTION

YVPP2 electronic regulator is designed for single solenoid proportional valve open loop control. Current regulation potentiometer is connected and assembled yet on electronic regulator. Current range (offset and gain), ramps times and PWM frequency can be modified through trimming potentiometer (placed on the back side of card) to meet different kind of valves specifications. YVPP2 is protected against supply over tension and polarity inversion. PWM output is protected against short-circuit. Electronic card is epoxy resin protected.

INSTALLATION

You can mount the regulator on panel through two countersunk screws M4x10 (included). In the picture on side is showed front panel dimensions and drills mask. With VPP2 regulator is also included a sticker with graduated scale from 0 to 10. You can use this sticker as reference scale for potentiometer adjustment.
YVPOL ELECTRONIC REGULATOR FOR PWM CONTROLLED SOLENOID

LED on panel for:
- Supply
- Output current
- Input signal

Potentiometer for:
- Offset current (Imin)
- Gain (Imax)
- Ramp rise
- Ramp fall
- Frequency (inside)

TECHNICAL SPECIFICATIONS:

Power supply from 10.5 to 30 Vdc
Reference signal 0÷10V max (optional 4÷20 mA)
Reference input impedance 20 kOhm
potentiometer supply 4.6 V
Max output current 2,5 A
Ramp range regulation 0 - 5 sec (separate rise/fall)
PWM frequency 50 ÷ 250 Hz (preset to 120 Hz)
Room working temperature -10°C ÷ +60 °C • -50°÷140°F
Indirect current measure (test point on panel) 1V read every 1A output current
Enable/Disable optional input Vsupply commanded
YVPUD-M ELECTRONIC REGULATOR FOR TWO PWM CONTROLLED SOLENOIDS

TECHNICAL SPECIFICATIONS:

Power supply voltage: 10Vdc ÷ 30Vdc
Input signal range: -5V ÷ +5V or 0V ÷ 10V or ¼ ¾Vsupply
Max output current: 2.5 A
External potentiometer supply: -5V and +5V (max 10 mA)
Input signal impedance: 11 kOhm
Indirect current measure (test point on panel): 1V / 1A
Working temperature range: -20 ÷ +50 °C • -68° ÷ 122°F
Independent regulations for each solenoid
min current (offset), max current (gain) and rise/fall time ramp.
Undecal type housing for DIN guides mounting
Overall dimensions: 79 x 36 x 77 mm [3.11 x 1.41 x 3.03 in] Weight: 200 g [0.44 lbs]

WORKING DESCRIPTION

The YVPUD-M electronic regulator is designed to command two proportional solenoids with one reference signal. Solenoids are controlled (PWM) with feedback signal so that linearity between output current and input signal is guaranteed and working is independent from external elements (supply voltage, temperature, etc.). The working frequency (PWM) is set to 120 Hz but it is adjustable from 50 Hz to 330 Hz).

The regulator can be commanded by a potentiometer (the supply voltage ±5V are present) but 0 to 10V or ¼ ÷ ¾ Vsupply signals can be utilized (coupling with a PLC). Outputs cannot be active contemporaneously, interlocked by a control circuit.

Minimum (BIAS) and maximum (GAIN) currents and rise/fall ramps are independently adjustable. Ramps are adjustable (between 0.1 and 5 seconds) and disabled by a positive signal connected to the proper input terminal. Red LEDs on panel show input signals variation and current variation to the solenoids, signalling if the output circuit is interrupted.

The regulator is protected against voltage reversal and output short circuits.
YSTU-PWMI ELECTRONIC REGULATOR FOR MULTIPLE PWM CONTROLLED SOLENOIDS

DESCRIPTION

STU-PWM electronic card is a regulator for proportional solenoid valves, which can drive up to 8 modules (8+8 PWM outputs), starting from analog inputs (input signal range from 0 to 5V). If the inputs analog signals are generated from potentiometric joysticks, the control card
provides a stabilized 5V supply to power them.

INPUTS

• n° 8 analog inputs signals ( range from 0 to 5V);
• n° 1 enable input defined as CONTROL PANEL ON;
• n° 2 ENABLE inputs with different operating features;
• n° 1 input to select LOW/HIGH SPEED(optional);
• n° 3 ON/OFF inputs, directly carried to three power outputs;

OUTPUTS

• n° 8+8PWM outputs, to drive proportional solenoid valves (a pairoutputs for each analog inputs);
• n° 1 DUMP VALVE output drived by all manoeuvres;
• n° 1 FAULT output;
• n. 3 ON/OFF outputs, directly drived by three ON/OFF inputs (max 2.5A);

OUTPUTS

Adjustable PWM frequency, min/max output currents and rise/fall time ramps. As option, STU-PWM is available with two selectable maximum speed sets (LOW/HIGH SPEED), to operate a different maximum speed in different operating conditions. It is also available a DUMPVALVE output that is turned on when a manoeuvrings turns on. This output has a
programmable delay on switch off, to avoid elevated pressure spikes in the hydraulic circuit.

The control unit provides three ON/OFF input/output to drive directly solenoid valves, starting from low power command signal.

To ensure more safety during working mode, the electronic card provides:
- programmable deadband, electrical stroke and adjustable signal threshold;
- an overall relay, feedback controlled, supply all control unit’s outputs;
- three inputs ENABLE signals (CONTROL PANAL ON, ENABLE1 and ENABLE2)
- an output to control theDUMP VALVE;
- an output (FAULT) to drive a warning light or a relay that report errors on analog inputs.

TECHNICAL SPECIFICATIONS

Power supply voltage     10Vdc ÷ 30Vdc
Current absorption     300 mA + load outputs
External potentiometers power supply voltage     +5V short circuit protected, max current 10 mA
Working temperature range     -20 ÷ +70 °C • -68° ÷ 158°F
PWM minimum current range     from 100 to 2500 mA
PWM maximum current range     from 100 to 2500 mA
Available PWM frequencies     50-60-70-85-100-125-150-200-250-300 Hz
ON&OFF outputs maximum current     2500 mA (700 mA for FAULT output)
Analog inputs impedance     11 KOhm towards 2.5V
Overall dimensions with connector mounted     256 x 210 x 45 mm [10.08 x 8.21 x 1.11 in] Drill interaxis     242x242 mm [9.52x9.52 in] n. 4 holes, max dia 6 mm [0.24 in]