Description
Core Product Summary
The AMETEK DCPF1-120-15-01 is a single-phase, phase-fired SCR power controller from the DCPF1 series, configured to deliver variable DC output. It regulates power to the load by controlling the firing angle of SCRs in proportion to an external command signal.
This model accepts a 120 Vac single-phase input at 50/60 Hz and is rated for 15 A rms continuous current. The standard command input is an optically isolated 4-20 mA signal. Multi-turn zero and span adjustments allow precise matching of output to the process control signal. Soft-start, voltage-squared linearity, and diagnostic indicators support reliable operation with resistive or inductive DC loads such as saturable core reactors.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Single-phase phase-fired SCR power controller (DC output) |
| Series | DCPF1 |
| Input Voltage | 120 Vac, +10 % / –15 %, single-phase |
| Line Frequency | 50 / 60 Hz |
| Current Rating | 15 A rms |
| Command Signal | 4-20 mA (optically isolated) |
| Output Voltage | Approximately 90 % of AC input voltage |
| Control Method | Phase-firing (two SCRs + two diodes full-wave for 15–50 A models) |
| Linearity | Within 2 % of span |
| Isolation | 2500 V rms (power circuit to command signal and ground) |
| Adjustments | Multi-turn ZERO and SPAN (10-turn) |
| Soft-Start | Approximately 12-cycle ramp (standard) |
| Operating Temperature | 0 °C to 50 °C |
| Storage Temperature | –10 °C to 70 °C |
| Relative Humidity | 0 to 95 % non-condensing |
| Approvals | UL / cUL Listed (E151547), CE Compliant |
| SCCR | 100 kA |
| Cooling | Natural convection (electrically isolated heatsink) |
| Weight (15–25 A) | Approximately 7 lb (3.18 kg) |
| Depth (15–50 A outline) | 6.28 in |
Engineering Selection Highlights
- Exact model DCPF1-120-15-01 specifies 120 Vac input and 15 A rms rating with 4-20 mA optically isolated command — confirm these match the available supply and process controller output before selection.
- Phase-fired DC-output configuration suits saturable core reactors, vibratory feeders, and DC resistive loads that require continuous proportional control rather than zero-crossing switching.
- Soft-start ramp of approximately 12 cycles reduces inrush on inductive loads or heating elements whose resistance changes significantly at start-up.
- Multi-turn zero and span controls allow calibration of the controller output to the exact span of the process command signal.
- 2500 V rms isolation between power circuit and command input supports safe interfacing with standard process controllers.
- Natural convection cooling and electrically isolated heatsink simplify installation in environments where forced-air fans are not required.
- UL/cUL listing and CE compliance provide documented approval for industrial panel integration under applicable safety standards.
DCPF1-120-15-01
DCPF1-120-15-01
Detailed Product Overview
The AMETEK DCPF1-120-15-01 belongs to the DCPF1 series of single-phase, phase-fired SCR power controllers designed for DC output. It regulates the portion of each AC half-cycle during which power is delivered to the load, producing an average DC voltage that is proportional to the applied command signal. For the 15 A rating the power stage uses two SCRs and two diodes in a full-wave configuration.
Input is fixed at 120 Vac single-phase with a tolerance of +10 % / –15 % and operates at either 50 Hz or 60 Hz. The continuous current rating is 15 A rms. The standard command input for the –01 suffix is an optically isolated 4-20 mA signal; DIP switches allow selection between isolated current and non-isolated voltage modes. Multi-turn zero and span potentiometers provide precise scaling of the controller output to the process signal range.
Pulse-train firing at approximately 17 kHz ensures reliable SCR gating throughout the conduction interval, while a phase-lock loop maintains synchronization with the line frequency. A standard soft-start ramp of roughly twelve cycles limits inrush current when the controller is first enabled or when load resistance changes abruptly. Voltage-squared feedback and line-voltage compensation maintain consistent power delivery despite supply fluctuations. Transient protection is provided by RC snubbers and MOVs; SCRs are rated 1400 V PIV and protected by a subcycle semiconductor fuse.
Diagnostic LEDs on the front panel indicate control power presence (red) and command-signal level (green, intensity proportional to output). Blown-fuse indicators are not fitted on 15 A and 25 A units. The unit is UL/cUL listed under file E151547, CE compliant, and carries a 100 kA SCCR rating. Operating ambient range is 0 °C to 50 °C with relative humidity up to 95 % non-condensing. Cooling is by natural convection through an electrically isolated heatsink; forced-air fans are used only on models rated 70 A and higher.
Installation requires proper orientation (load terminals downward), unrestricted vertical airflow, and a minimum 10 AWG ground conductor. Branch-circuit protection must be provided externally in accordance with applicable codes. The controller is intended for panel mounting inside an enclosure (IP00) and is not designed for outdoor or corrosive environments without additional protection.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| Input Supply | 120 Vac single-phase, +10 % / –15 %, 50/60 Hz | Branch-circuit overcurrent protection required; semiconductor fuse is not branch protection |
| Command Signal | 4-20 mA optically isolated (standard for –01) | DIP switches configure isolated current or non-isolated voltage input |
| Load Type | DC resistive or inductive loads | Output voltage approximately 90 % of AC input; open-output condition presents line voltage at terminals |
| Control Interface | Process controller, remote 5 kΩ potentiometer, or dry contact | Terminals provided for multiple external control methods |
| Grounding | 10 AWG or larger ground conductor required | Essential for proper operation and safety |
| Wire Size (15–30 A) | 14 to 8 AWG copper, 75 °C minimum | Torque connections per manufacturer torque table |
| Mounting Orientation | Load terminals at bottom; unrestricted upward airflow over heatsink fins | Ensures proper convection cooling |
Dimensions, Mounting & Connection Notes
For the 15–50 A frame (applicable to the 15 A model), outline depth is 6.28 in and approximate weight is 7 lb (3.18 kg). Mount the unit so that load connections face downward and upward airflow over the heatsink fins remains unrestricted. A ground conductor of 10 AWG or larger is required. Power wiring for 15–30 A ratings uses 14 to 8 AWG copper conductors rated 75 °C minimum. The internal semiconductor fuse does not replace required branch-circuit overcurrent protection. Thermostats are optional on ratings below 90 A and are not standard on the 15 A model.
Applications & System Role
The DCPF1-120-15-01 functions as a single-phase phase-fired SCR power controller that converts a proportional command signal into variable DC power delivered to the load. It sits between the AC supply and a DC load, regulating average output by advancing or retarding the SCR firing angle within each half-cycle. Documented applications include control of saturable core reactors, vibratory feeders, and DC resistive loads where continuous, proportional power adjustment is required. The soft-start feature and voltage-squared feedback support stable operation with loads that exhibit large resistance changes at start-up or during temperature variation.
FAQ
What is the AMETEK -120-15-01?
It is a single-phase, phase-fired SCR power controller configured for DC output, rated 120 Vac input and 15 A rms continuous current, with a standard optically isolated 4-20 mA command signal.
Which series does the DCPF1-120-15-01 belong to?
It belongs to the AMETEK HDR DCPF1 series of single-phase phase-fired SCR power controllers.
What command signal does the DCPF1-120-15-01 use?
The –01 suffix specifies an optically isolated 4-20 mA command signal. DIP switches allow configuration for isolated current or non-isolated voltage inputs.
What is the approximate DC output voltage?
Output voltage is approximately 90 % of the AC input voltage under rated conditions.
Does the DCPF1-120-15-01 require a cooling fan?
No. Models rated 15 A use natural convection through an electrically isolated heatsink. Forced-air cooling is applied only to units rated 70 A and higher.
What approvals does the DCPF1-120-15-01 carry?
It is UL/cUL listed (file E151547) and CE compliant, with a 100 kA short-circuit current rating.
What load types is the DCPF1-120-15-01 intended for?
It is intended for DC resistive and inductive loads, including saturable core reactors and vibratory feeders that require continuous proportional power control.
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