Page 556 - Hydrover-hydraulic-integrated-circuits-catalogue

Electronic controls 61 SERIES

Single proportional control / octal H6101

Introduction
This electronic control it’s been developed to drive a solenoid proportional valve without integrated position transducer.
The device is enclosed in a “OCTAL” plastic container with 8 pin standard circular connector (the typical circular relays
connector).
The output stage operates in PWM high-frequency modulation and produces a sinusoidal dither signal whose value can
be varied between 80 and 220Hz to fit most existing valve cursors.
The integrated current feedback allows a fine control versus solenoid temperature variations. The circuit also integrates
a short-circuit protection, which is signaled by its overloaded LED (O. LOAD) and protection for supply voltage inversion.
The green LED (SUPPLY) signals power supply presence, the two yellow LED (OUT A e OUT B) indicate the driving of
the solenoid.
Minimum current (I.MIN), Maximum current (I.MAX), Rise ramp (R.UP) and Fall ramp (R.DW) can be calibrated with the
trimmer on frontal panel.
Ramps can be excluded shorting input RAMP CONTROL (8) to supply voltage (the red LED “R.OFF” lights).
You can drive the valve wiring a 5 K Ohm or 10 K Ohm, potentiometer between pin 4 (+5V) and pin 1 (0V) with the tap on
pin 3 (ref.) or giving a voltage (or current) reference between pin 3 (Ref.) and 0V pin 1 (-).

Electrical wiring
Wiring the card following the electric diagram and don’t apply supply. Turn all the trimmer counterclockwise almost for ten
turns, set the external potentiometer tap or the reference to zero. Turn on the card, check if the greed led lights up and
the yellow led stay off (no driving to the valve(s)). If not as described above, check wiring and if the external pot. tap is
really turned to 0V.
Diagram 1

1. Pot. 0V
2. Supply -
3. Pot. tap
4. Pot. +5V
5. Solenoid -
6. Solenoid +
7. Supply +
8. Ramp control

Diagram 2

1.
2. Supply -
3. Reference (V or I)
4.
5. Solenoid -
6. Solenoid +
7. Supply +
8. Ramp control

556 General catalogue September 2023 edition