Laurel

Laureate™ Power Options

For 85-264 Vac, or 8-28 Vac & 9-37 Vdc Input,with 5, 10 & 24 Vdc Excitation Output
Features
  • Lightweight, high-frequency switching power supply design.
  • 8-28 Vac or 9-37 Vdc power option.
    Allows operation from batteries or 28 Vac, 400 Hz aircraft power.
  • Certificate of compliance to UL 3101-1, CAN/CSA-C22.2, and EN 61010-1 safety standards.
  • 85-264 Vac or 90-370 Vdc input is standard. Includes 250 Vac, 0.1A resettable fuse.
    Allows worldwide AC operation without hardware modification.
  • Three selectable isolated excitation outputs:
    5 Vdc at 100 mA, 10 Vdc at 120 mA, or 24 Vdc at 50 mA.
  • Certification issued by CSA, a Nationally Recognized Test Laboratory (File No. 212851).
Description
Laureate™ digital panel meters, digital counters and 6-digit remote display offer a choice of two high-frequency switching power supplies. These provide stable, isolated power for instrument operation plus excitation outputs at a substantially reduced weight and over a broader range of input voltages and power frequencies than conventional linear supplies

High voltage AC or DC power. The standard Laureate supply accepts power from 85 to 264 Vac, 47 to 440 Hz. This allows the same meter to operate worldwide without modification. The supply also accepts 90 to 370 Vdc.

Low voltage AC or DC power. An optional low voltage supply operates from 9 to 37 Vdc or 8 to 28 Vac, 47 to 440 Hz. This supply allows the Laureate to be powered from batteries or from 28 Vac, 400 Hz aircraft power
Isolated Excitation Output
Each power supply provides three jumper-selectable, isolated excitation outputs: 5 Vdc at 100 mA, 10 Vdc at 120 mA, or 24 Vdc at 50 mA. These outputs can be used to power external sensors, transmitters and up to four 350 ohm load cells, thereby avoiding the need for an expensive external supply. When powering a load cell or potentiometer, a ratiometric operating mode can be selected, where the meter monitors the excitation supply and removes the effects of voltage variation.

In addition to the isolated excitation output, regulated 5 Vdc at up to 50 mA is brought out and can be used to power external logic

Isolated Excitation Output
Counters
4-wire 4-20 mA transmitter
Counters
4-wire 4-20 mA transmitter
With four-wire transmitters, two wires are used to apply 10 or 24 Vdc, and two separate wires are used to sense the transmitter's 4-20 mA output

With two-wire transmitters, the same two wires are used to power the transmitter and carry the 4-20 mA output, which is made to flow across an internal 10 ohm resistor between pins 3 and 4.

Both power supplies and their connectors (standard) are designed to UL/IEC/CSA safety standards. The two Laureate power supplies also do double-duty by providing two connector inputs (A & B) and a digital ground for signals such as meter hold, reset, tare, etc. These signals do not affect power supply operation.

Specifications

Operating Power Excitation Power Supply
Voltage (std) 85-264 Vac or 90-370 Vdc Selectable outputs 5 Vdc ±5%, 100 mA max
10 Vdc ±5%, 120 mA max
24 Vdc ±5%, 50 mA max
Voltage (opt)

8-28 Vac or 9-37 Vdc

Ripple 50 mVp-p max
Frequency DC and 49-440 Hz Isolation to power ground Safety-rated to 250 Vac, 4.2 kVp per High Voltage Test
Power consumption 5.3 W max Isolation to meter ground 50 Vp
Pin Assignments
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5672 Bolsa Avenue Huntington Beach, CA 92649 - USA - Ph (714) 622-2000 - Fax (714) 622-2001