The DHC-100 positioner is a high performance, high resolution digital positioner. A simple three button control is used to configure ALL parameters that the unit needs for a variety of applications, and eliminates the need for special meters and/or tools for calibration. As long as there is supply power, the unit can easily be field calibrated
This positioner can be calibrated for various command types (such as 4-20mA, 1-5VDC, 0-5VDC, 0-10VDC, or digital) and also the default operation upon loss of command (such as fail open, fail close, or fail as is). The optional transmitter/auxiliary switch module is installed into the positioner card via plug and socket. This allows a user defined feedback signal of current or voltage, and provides 3-SPSt relay contacts for open position, closed position, and a fault condition.
Specifications
Power Requirements:
DHC-100: 117VAC +/- 10%, 50/60 Hz, 12 VA typical (not including output load)
Fuse Type:
5A TR5 Slo-Blo (replaceable)
Command Signal Input:
120 VAC 1Ph 50/60 Hz
Loss of command threshold:
<0.75V or >5.5V (1-5 VDC input), <3ma or >22mA (4-20mA input)
AC Motor Outputs:
State Leakage Current: <15mA
Maximum Load Current @ 150C: 5A
Input Impedance:
20K ohms (1-5 VDC, 0-5 VDC, 0-10 VDC), 251 ohms +/-1% (4-20mA input)
Feedback Signal Input:
Input Voltage: 0 to 2.5VDC
External Feedback Potentiometer: 1K ohm
Power Supply Inputs:
+15V OUT (J2-8): 125mA maximum (not including option module)
+5V OUT (J2-7): 5mA maximum
NOTE: Do not connect these outputs to other power supplies
Environmental
Operating Temperature Range: 32F to 150F
Storage Temperature Range: -40F to 185F
Relative Humidity Range: 0 to 90% (noncondensing)
- High resolution
- Simple Pushbutton calibration
- Calibrated as standard or reverse acting
- Multi-meter not required for potentiometer 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, 0-5VDC, 0-10VDC, or digital
- Loss of command and feedback potentiometer fault detection
- Motor stall detection will sense when the motor has reached a stall condition and remove power from the motor