Peaktronics DHC-301 Instruction Manual

Digital high-resolution 3-phase controller
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PEAKTRONICS
The Peaktronics DHC-301 is a 2nd generation high
performance digital positioner intended to control 3-phase
actuators, providing up to 450 points of resolution with
quarter turn actuators ranging from 5 sec to 120 sec and
rated for 25% duty or more. The DHC-301 has many au-
tomatic advanced features that will enhance any actuator
while making it easy to install and set up.
The simple three button control is used to configure
all parameters the unit needs for a wide variety of applica-
tions, and allows the open and closed positions to be easily
set for direct or reversing acting without any rewiring. The
unit can be configured for various command types (4-
20mA, 1-5V, 0-5V, 0-10V, 2-10V, or a Digital command)
and its default operation upon loss of command.
Various option modules are easily plugged into the
unit, providing other features such as a position feedback
signal (current or voltage), auxiliary switches, fault relay
contact, or digital communications. A wide range of data is
accessible through a digital communications module,
providing additional control or information.
The unit is of single solid construction and is easily
mounted with two screws. The DHC-301 is a Peaktronics
standard size positioner and directly replaces 1st generation
DHC-300 controllers.
Can position to ±0.1, and can be used with quarter-turn actuators ranging from 5 sec to
120 sec.
Adaptive Control feature continuously adjusts for load and actuator conditions and
eliminates calibration procedures and auto-cal operations.
Three button control provides easy setup and eliminates the need for instrumentation.
Polarity Detection feature allows direct or reverse acting operation without re-wiring.
Stall Detection feature protects actuator motor from a stall condition.
Automatic Duty Cycle Control feature prevents shutdown of a process due to a ther-
mal overload of the actuator motor, and allows actuators rated for 25% duty or more to
be safely used.
Operating temperature range of 0 to 60C
FEATURES
DHC-301
Digital High-Resolution
3-Phase Controller
DHC-301
117VAC
U.S. Patent 7,466,100 applies to this product

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Summary of Contents for Peaktronics DHC-301

  • Page 1 450 points of resolution with quarter turn actuators ranging from 5 sec to 120 sec and rated for 25% duty or more. The DHC-301 has many au- tomatic advanced features that will enhance any actuator while making it easy to install and set up.
  • Page 2: Front Panel

    DHC-301 OUTLINE DHC-301 117VAC PEAKTRONICS Digital High Resolution ELECTRICAL DIGITAL AUTO CONNECTIONS 4-20mA MANUAL / FB POT CAL 1-5VDC CLOSE LAST (BOTH OFF) 0-5VDC OPEN to Solid State Relay MODE 0-10VDC AUX CLOSE OUTPUT CONTROL 1 OUT 2-10VDC AUX OPEN OUTPUT...
  • Page 3: Block Diagram

    See Special Applications DHC-301 DESCRIPTION The DHC-301 is powered by a secondary source of unit automatically and continuously sets all other parame- 117 VAC 10%. The unit is easily mounted with 2 screws ters when placed in the AUTO mode.
  • Page 4: Override Mode

    1 and 2 enables normal opera- An appropriate command signal, either 0-5V, 0- tion of the DHC-301 and must be installed if the external 10V, 1-5V, 2-10V, or 4-20mA, should be connected to pin override functions are not used.
  • Page 5 (▲ and ▼) without affecting any other settings with- functions. The OFF and STOP functions turn the motor in the DHC-301. When the ▲ button is pressed, the Con- off, which also unlatches the OPEN or CLOSE functions. trol 1 output (J1-1) will be +4V in respect to J6-1. When Note that the OPEN and CLOSE functions may the ▼...
  • Page 6: Command Type

    1-5V input), 10.5V (for 2-10V ipnut), or 21mA. If the output on the optional relay module - the output can be DHC-301 detects a loss of the command, a fault will be used to drive an alarm or merely act as an auxiliary limit indicated (see FAULT INDICATORS), and the actuator switch.
  • Page 7: Fault Indicators

    DHC-301 However, the DHC-301 can detect when a 0-5V or 0-10V fault that has not been corrected. The following table pro- command signal is out of range (i.e., greater than 5.25V or vides a summary of the Fault indications which is fol- greater than 10.5V) or connected backwards.
  • Page 8: Specifications

    DHC-301, and it prevents disruption of a process due to a set by the CLOSE and OPEN functions. thermal switch shutdown.
  • Page 9: Power Supply Outputs

    Various option modules can be plugged into the Contact the factory for the latest available modules. Refer DHC-301 option module connector, J3. Option modules to the diagram below for instructions on installing an op- provide additional features such as position feedback sig- tion module.
  • Page 10: Wiring Diagrams

    DHC-301 WIRING DIAGRAMS Input Signal Configurations J2-6 0-5V VOLTAGE CMD (+) 1-5V 0-10V DHC-301 DHC-301 J2-5 2-10V 4-20mA J2-4 Sourcing SIGNAL GND 4-20mA Sinking J2-4 output SIGNAL GND 4-20mA Input using a self powered transmitter Voltage Input using digital-to-analog card...
  • Page 11 J2-2 J1-2 CLOSE J2-3 J6-1 COMMON DHC-301 NOTE: When the DHC-301 is in the manual mode, the button operates Control 1 Out, and button operates Control 2 Out. Connecting a solid state relay block DHC-301 Voltage Feedback Monitor 7 Voltage Output...
  • Page 12 DHC-301 WIRING DIAGRAMS Special Applications MECHANICAL AMM-100 USING MANUAL OVERRIDE MOMENTARY SWITCH Series (optional) SWITCHES STOP (optional) J7-1 AUTO J7-2 OFF (optional) Connect for latching function. Note, one STOP switch will MANUAL be required. MECHANICAL AMM-100 USING MANUAL OVERRIDE TOGGLE...

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