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PDW90 Point-to-Multipoint Wireless Process Signal System

Brand: Precision Digital Corporation
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The Precision Digital PDW90 is a rugged, customizable, point to multipoint wireless bridge that can be configured for a variety of inputs and outputs including a maximum of 32 Analog inputs.

It offers a highly-flexible means of getting Analog, digital, and Modbus signals from where you have it to where you need it.

Modular input/output cards and expandable field units mean that the PDW90 can be customized to meet the needs of just about any wireless application.
Features
  • Point to Multi-Point Signal Wire Replacement
  • Simple to Configure Using PDW Manager Programming
  • Software and Onboard USB
  • Range: 1 Mile Line-of-Sight, 500 ft Indoor
Base Station
  • Rugged Plastic NEMA 4X Field Enclosure
  • Field or Wall Mounted
  • RS-485 Modbus Standard
  • Up to 16 Dual Input/Output Expansion Cards
  • Analog Input, Analog Output, Relay Output, and Digital I/O Cards Available
Field Units
  • Analog Input and Output, Four Digital I/O, and RS-485 Modbus® Standard
  • Remote or Attached Antenna
  • Flanges for Wall or Pipe Mounting
  • NEMA 4X, IP68 Enclosure
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The Precision Digital PDW90 is a rugged, customizable, point to multipoint wireless bridge that can be configured for a variety of inputs and outputs including a maximum of 32 Analog inputs.

It offers a highly-flexible means of getting Analog, digital, and Modbus signals from where you have it to where you need it.

Modular input/output cards and expandable field units mean that the PDW90 can be customized to meet the needs of just about any wireless application.
Features
  • Point to Multi-Point Signal Wire Replacement
  • Simple to Configure Using PDW Manager Programming
  • Software and Onboard USB
  • Range: 1 Mile Line-of-Sight, 500 ft Indoor
Base Station
  • Rugged Plastic NEMA 4X Field Enclosure
  • Field or Wall Mounted
  • RS-485 Modbus Standard
  • Up to 16 Dual Input/Output Expansion Cards
  • Analog Input, Analog Output, Relay Output, and Digital I/O Cards Available
Field Units
  • Analog Input and Output, Four Digital I/O, and RS-485 Modbus® Standard
  • Remote or Attached Antenna
  • Flanges for Wall or Pipe Mounting
  • NEMA 4X, IP68 Enclosure
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Specifications

Brand

Accuracy

  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output: ± 0.1 % of Span ± 0.004 mA
  • Dual Analog Input Module: ± 0.03 % of Calibrated Span ± 1 Count

Calibration

  • Field Unit, Dual Analog Input Module, Dual 4-20 mA Output Module: Recalibration is Recommended at Least every 12 Months

Communication

  • Dual Analog Input Module: Analog Input Will Not Interfere with Existing HART Communications on the Wired 4-20 mA Signal
  • RS-485 Modbus
  • RS-485 Modbus RTU Serial Communication (Compatibility): EIA-485
  • RS-485 Modbus RTU Serial Communication: Baud Rate: 1,200 to 57,600 bit/sec
  • RS-485 Modbus RTU Serial Communication: Data Length: 8-bits
  • RS-485 Modbus RTU Serial Communication: Start Bit: 1-bit
  • RS-485 Modbus RTU Serial Communication: Stop Bit: 2-bits
  • USB

Conduit Connection

  • 1/2” NPT

Current

  • Sink Current: 1.5 mA Min. (Input Current)
  • Source Current: 10 mA - Max.

Display

  • Field Unit: 32-Character Dual-Line Alphanumeric Dot Matrix LCD with Backlight (4.68 mm x 2.21 mm Characters)
  • Field Unit: Display May be Mounted at 90° Increments up to 270° from Default Orientation
  • LCD Display

Distance

  • RS-485 Modbus RTU Serial Communication: 3,937 feet (1,200 metres) - Max.

Electrical Connectors

  • Field Unit: Removable Screw Terminal Blocks Accept 16 to 30 AWG Wire
  • Removable Screw Terminal Blocks Accept 12 to 22 AWG Wire
  • RS-485 Modbus RTU Serial Communication: Removable Screw Terminal

Electrical Rating

  • Dual Relay Module: 1/14 hp (50 W) at 125/250 Vac for Inductive Loads
  • Dual Relay Module: 3 A at 30 Vdc, 125/250 Vac Resistive Load

Enclosure Finish

  • Field Unit: Blue
  • Field Unit: Corrosion Resistant Powder-Coated
  • Gray

Enclosure, Body Material

  • Field Unit: 0.30 %, Max.
  • Field Unit: Cast Aluminum with Glass Window
  • Thermoplastic Polyester

Environmental Protection

  • IP66
  • IP68
  • NEMA 4X

Frequency

  • Wireless Radio: 900 MHz

Humidity

  • 0 to 90 % Relative Humidity, Non-Condensing

Input

  • Digital Input Logic High: 3-5 Vdc
  • Digital Input Logic Low: 0-1.1 Vdc
  • Dual Analog Input Module (Field Selectable): 0-10 V
  • Dual Analog Input Module (Field Selectable): 4-20 mA

Input Impedance

  • Dual Analog Input Module (Current Range): 50 to 100 ohms (Depending on Resettable Fuse Impedance)
  • Dual Analog Input Module (Voltage Range): > 500 kiloohms

Isolation

  • 500 V

Loop Resistance

  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output (Output Loop Resistance): 10 to 900 ohms

Mounting

  • 1.5” Pipe Mounting
  • Wall Mounting

Operating Temperature

  • -40° to 65° C (-40° to 149° F)

Output

  • Digital Output Logic High: 3.1-3.3 Vdc
  • Digital Output Logic Low: 0-0.4 Vdc
  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output (Factory Calibrated): 4-20 mA
  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output (Signal Loss): after Approximately 25 seconds of Trying to Reconnect, 3.2 mA

Plug Material

  • Field Unit (Conduit Plug): Stainless Steel

Power

  • 2.4 W Min.
  • 24 Vdc ± 10 %
  • 36 W, Max.
  • Field Unit: 12-28 Vdc, 5 W, Max.
  • Isolated 4-20 mA Transmitter Output (Output Loop Power): 24 Vdc

Power Supply

  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output (Output Loop Power): 24 Vdc

Range

  • Wireless Radio: 5,280 feet (1,610 metres) Outdoor (Line-of-Sight)
  • Wireless Radio: 500 feet (152.4 metres) Indoor

Sensitivity

  • Wireless Radio: -101 dBm

Storage Temperature

  • -40° to 85° C (-40° to 185° F)

Switch Type

  • Dual Relay Module: 2 SPDT (Form C)

System Requirements

  • Microsoft Windows® XP/Vista/7/8/10

Thermal Drift

  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output: 0.4 µA/°C, Max.
  • Dual 4-20 mA Output Module, Isolated 4-20 mA Transmitter Output: 0.8 µA/°C, Max.
  • Dual Analog Input Module: 0.005 % of Calibrated Span/°C, Max.
  • Dual Analog Input Module: 0.01 % of Calibrated Span/°C, Max.

Torque

  • Field Unit (Signal Connector Tightening Torque): 0.28 Nm (2.5 In/Lbs)
  • Tightening Torque (Screw Terminal Connectors): 0.56 Nm (5 In/Lbs)
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