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- Model DHC-100 - Digital Valve ...
Model DHC-100 -Digital Valve Positioner
The DHC-100 is a high performance digital positioner, providing 450 points of resolution for quarter turn actuators ranging from two seconds to 120 seconds, and is rated for a 25 percent duty cycle, or more.The DHC-100 has many automatic advanced features that will enhance our actuators while maintaining ease of installation and calibration. The DHC-100 positioner features, self calibration without multimeter or control signal, duty cycle control, selectable input signal (milliamp or voltage), positions to plus/minus 0.1° within a 90° quadrant, operating temperature range of up to 150°F, fault detection, and stall detection protection. The DHC-100 positioner can be installed in Asahi/America"s Series 92 or Series 94 actuators in the field, or can be installed by our expert technicians at time of order.
- Reversing, brushless capacitor run motor (115 VAC & 230 VAC)
- All 115 VAC and 230 VAC motors are CE Compliant, and bear the CE mark
- Integral thermal overload protection for motor windings with automatic reset (115 VAC & 230 VAC)
- 50% - 100% duty cycle motor
- Permanently lubricated, Rockwell hardened solid alloy steel gearing
- Combination Type 4X, 7, & 9 enclosure for use in various environments
- Corrosion Resistant thermally bonded baked powder coating with stainless steel trim
- ISO mounting configuration
- Two (2) 1/2” FNPT conduit entry to eliminate cross feed between control, feedback, and power signals
- Highly visible beacon position indicator for positive position of valve, even at a distance
- Declutchable manual override: Pull up on indicator knob, insert 5/8” wrench onto flats and rotate in the appropriate direction (CCW for open/CW for close). Models with handwheel override do not require a wrench. Simply push down on handwheel until engaged with cam and rotate
- Output torque: Series 92 actuators have an output torque range from 400 in/lbs to 2000 in/lbs
- High resolution
- Simple Pushbutton calibration
- Calibrated as standard or reverse acting
- Multi-meter not required for potentiometer calibration
- Control signal not required for calibration
- Options install into positioner via plug and socket
- Selectable fail position for loss of input signal; fail open, fail close, or fail as is
- Selectable input signal; 4-20mA, 1-5vdc, 0-5 VDC, 0-10 VDC, or digital
- Loss of command & feedback potentiometer fault detection
- Motor stall detection will sense when the motor has reached a stall condition & remove power from the motor
- Voltages: 230 VAC, and low AC or DC
- Heater and thermostat
- Mechanical Brake
- 4-20mA output transmitter with 3-SPST Relay Contacts