4-20 mA Input (4)
This control module uses closed-loop current control with superimposed dither to supply a proportional valve solenoid with a proportional control signal. This control- ler will accept a 4–20 mA input signal from a programmable logic controller (PLC) or other control systems.
Product Features
• Mounts directly to solenoid coils with DIN 43650A connectors.
• IP65 weather resistant when used with base gasket (supplied).
• Adjustments accessible with a removable cover.
• One unit covers supply voltages from 9 to 32 VDC.
• No internal fuses; circuit limits current electronically.
• Short circuit proof and reverse polarity protected.
• Connector can be disconnected from coil when powered.
• Maximum current adjustment does not affect minimum current setting.
• Independent ramp adjustments.
• Dither frequency and amplitude are adjustable for maximum valve performance.
Product Ratings
Supply Voltage: 9–32 VDCCoil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max.
Control Input Signal Options: 4–20 mA current signal
Input Resistance: 50 Ohms
Output Current: 1200 mA
Minimum Current Range: 0–150 mA, adjustable
Maximum Current Range: 400–1200 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
Environmental Protection: IP65 with cover and base gasket installed
3.423.1
GENERAL SPECIFICATIONS
Plug Housing: Polyamide
Plug Lid: Polycarbonate
Weight: 30 g (1.06 oz.) without cable
Connections: Mounted cable with unterminated wires provided; Length: approximately 2 meters (79″)
Proportional Valve Controller—DIN Coil Mount—
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDCURRENT LOOP TRANSMITTER+–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERSIGNAL GNDCURRENT IN(4-20 mA)+12 V–12 V+5 V(9-32 VDC)
