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This control module uses closed-loop current control with superimposed dither to
supply a proportional valve solenoid with a proportional control signal. The input
signal to this controller can be from a 0–10 VDC source.
• Adjustments accessible under removable cover.• LED indication of output power level, input level and power on/off.
• One unit covers supply voltages from 9 to 32 VDC.
• No internal fuses; circuit limits current electronically.
• Short circuit proof and reverse polarity protected.
• Can be disconnected from coil when powered.
• Maximum current adjustment does not affect minimum current setting.• Filter eliminates electrical noise.
• Independent ramp adjustments.
• Dither frequency and amplitude are adjustable for maximum valve performance.
Supply Voltage: 9–32 VDCCoil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max.
Control Input Signal: 0–10 VDC
Input Resistance: 250K Ohms
Output Current: up to 1200 mA
Minimum Current Range: 0–150 mA, adjustable
Maximum Current Range: 400–12000 mA, adjustable
Ramp Up and/or Down: 0.01–5.0 seconds, independently adjustable
Dither Frequency: 70–350 Hz, adjustable
Dither Amplitude: 0–10% of maximum current, adjustable
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity
3.431.1
Proportional Valve Controller—Metal Housing—
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERINPUT, OUTPUTANDPOWER SUPPLYINDICATORSSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGND+–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIERLOWPASSFILTER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERANALOG GNDNOT USEDENABLEVOLTAGE IN(0-10 VDC)NOT USED+12 V–12 V+5 V(9-32 VDC)CF
GENERAL SPECIFICATIONS
Metal Housing: Conformal coated; IP67 rated
Weight: Metal Box without cable: 400 g (14.1 oz.)
Connections: Mounted cable with unterminated wires provided; Length: Approx. 1.5 meters (59")
