Precision Digital PDW90 Point-to-Multipoint Wireless Process Signal System

Precision Digital PDW90 Point-to-Multipoint Wireless Process Signal System

Name: Precision Digital PDW90 Point-to-Multipoint Wireless Process Signal System
Brand: Precision Digital
SKU: PDW90
Availability: InStock

SKU: PDW90 Category: Industrial Wireless

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Brand: Precision Digital

The Precision Digital PDW90 is a durable and customizable wireless bridge designed for point-to-multipoint communication. It provides a flexible solution for transmitting analog, digital, or Modbus® signals from one location to another. With modular input/output cards and expandable field units, the PDW90 can be tailored to fit any wireless application.

Ordering the PDW90 is straightforward, and configuring it is a breeze. You can choose from preassembled kits or individual modular components. Plus, it comes with a satisfaction guarantee—if it doesn’t meet your needs, you can return it hassle-free. For installations requiring longer distances, a wireless survey tool is available to ensure your setup will work effectively from the start.

The field units can accept various inputs, including analog, discrete, or Modbus®, and they wirelessly transmit these signals to the PDW90 base station. The base station can then recreate these signals using its built-in RS-485 or analog and digital I/O cards. It can also be programmed to activate relays or send analog/digital signals back to the field units. Simply place the field units near your process signals and the base station in your control room.

Additionally, the PDW90 offers fixed or remote antenna modules along with a variety of accessories, such as mounting kits, antenna-related tools, and repeaters. You can attach the antenna directly or place it remotely, and high-gain directional antennas are also available for enhanced performance.

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

General

Maximum Connected Field Units	32 field units
Network ID	Programmable: 0 – 99
Programming Methods	Via PC with PDW Manager software
Power	24 VDC ±10%, 36 W max, 2.4 W min; Power consumption is dependent on type and number of modules installed
Non-Volatile Memory	All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
Environmental	Operating temperature range: -40 to 65°C; Storage temperature range: -40 to 85°C; Relative humidity: 0 to 90% non-condensing
Connections	Removable screw terminal blocks accept 12 to 22 AWG wire.
Peak Antenna Gain	2.15 dBi ± 1.0
Enclosure	15.75″ x 11.81″ x 7.03″ (40 cm x 30 cm x 17.9 cm) (W x H x D); NEMA 4X; Thermoplastic Polyester; Color: Gray
Tightening Torque	Screw terminal connectors: 5 lb-in (0.56 Nm)
Shipping Dimensions	17″ x 14″ x 9″ (43.2 cm x 35.6 cm x 22.9 cm) (W x H X D)
Shipping Weight	6.5 lbs (2.95 kg)
Warranty	3 years parts & labor

Wireless Radio

Frequency	900 MHz
Range	500 ft (152.4 m) indoor, 1 mi (1.61 km) outdoor (line-of-sight)
Encryption	AES 128-bit encryption available using PDW Manager software
Interference Reduction	Frequency Hopping Spread Spectrum (FHSS)
Power Output	24 dBm (250 mW)
Sensitivity	-101 dBm

PDW Manager Software

System Requirements	Microsoft® Windows® XP/Vista/7/8/10
Communications	USB 2.0 (Standard USB A to Micro USB B)
Configuration	Configure devices one at a time

RS-485 Modbus® RTU Serial Communications

Compatibility	EIA-485
Connectors	Removable screw terminal connector
Max Distance	3,937′ (1,200 m) max
Baud Rate	1200 – 57,600 bps
Transmit Time Delay	Programmable between 0 and 199 ms
Data	8 bit (1 start bit, 1 or 2 stop bits)
Parity	Even, Odd, or None with 2 stop bits
Modbus Timeout	0.5, 1, 2, 3, 4, 5 seconds; user selectable

Inputs	Field selectable: 4-20 mA, 0-10 V, 0-5 V, 1-5 V
Accuracy	±0.03% of calibrated span ±1 count
Isolation	500 V
Recalibration	All ranges are calibrated at the factory. Recalibration is recommended at least every 12 months.
Temperature Drift	0.005% of calibrated span/°C max from 0 to 65°C ambient, 0.01% of calibrated span/°C max from -40 to 0°C ambient
Input Impedance	Voltage ranges: greater than 110 kΩ; Current ranges: < 220 Ω
Signal Loss	Inputs will remain off (open circuit) until wireless units are reconnected.
HART Transparency	Analog input will not interfere with existing HART communications on the wired 4-20 mA signal

Dual 4-20 mA Output Module

Output Source	Analog input from connected wireless unit
Calibration	Factory calibrated: 4.000 to 20.000 = 4-20 mA output
Accuracy	± 0.1% of span ± 0.004 mA
Isolation	500 V
Temperature Drift	0.4 µA/°C max from 0 to 65°C ambient, 0.8 µA/°C max from -40 to 0°C ambient
Loop Power Supply	Internally powered; no external supply needed
Output Loop Resistance	Power supply	Minimum	Maximum
	24 VDC	10 Ω	900 Ω
Signal Loss	After approximately 25 seconds of trying to reconnect, mA output will become 3.2 mA

Digital Input / Output Module

Channels	Four (4) digital connections, independently field selectable as either inputs or outputs
Digital Input Logic High	3 to 5 VDC
Digital Input Logic Low	0 to 1.1 VDC
Digital Output Logic High	3 to 5 VDC
Digital Output Logic Low	0 to 0.4 VDC
Source Current	10 mA maximum output current
Sink Current	1.5 mA minimum input current
Signal Loss	Digital output goes to logic high

Dual Relays Module

Rating	2 SPDT (Form C); rated 3 A @ 30 VDC and 125/250 VAC resistive load; 1/14 HP (≈ 50 W) @ 125/250 VAC for inductive loads
Noise Suppression	Noise suppression is recommended for each relay contact switching inductive loads; see page 13 for details.
Initialization	After power failure, relays will initialize to default state before reconnecting to wireless units.
Signal Loss	If mapped to digital input channel, the relay energizes.

PDW90 Field Unit Specifications

General

Display	32-character dual-line alphanumeric dot matrix LCD display with backlight (4.68mm x 2.21mm characters)
Display Orientation	Display may be mounted at 180° from default orientation
Network ID	Field selectable: 0 – 99
Programming Methods	Four programming buttons (behind glass) or PC with PDW Manager software.
Recalibration	All inputs and outputs are calibrated at the factory. Recalibration is recommended at least every 12 months.
Process/ Digital I/O Display	Press the display button once to display the present analog input and output, press the display button again to display digital I/O states.
Password	A programmable password restricts modification of programmed settings.
Power	12-28 VDC, 5 W max
Non-Volatile Memory	All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
Isolation	500 V
Environmental	Operating temperature range: -40 to 65°C (display inoperable < -20 °C); Storage temperature range: -40 to 85°C; Relative humidity: 0 to 90% non-condensing
Connections	Removable screw terminal blocks accept 16 to 30 AWG wire.
Enclosure	Cast aluminum with glass window, 0.30% max copper content, corrosion resistant powder coating, color: blue. NEMA 4X/IP68. Two ½” NPT threaded conduit openings. One ½” NPT stainless steel conduit plug with 10 mm hex key fitting installed.
Mounting	May be mounted directly to conduit. Two mounting holes for 1.5″ pipe or wall mounting. See Mounting Dimensions on page 15 for mounting space requirements.
Tightening Torque	2.5 lb-in (0.28 Nm)
Shipping Dimensions	17″ x 14″ x 9″ (43.2 cm x 35.6 cm x 22.9 cm) (L x W X H)
Shipping Weight	5 lbs. (2.27 kg)
Warranty	3 years parts & labor

Wireless Radio

Frequency	900 MHz
Range	500 ft (152.4 m) indoor, 1 mi (1.61 km) outdoor (line-of-sight)
Encryption	AES 128-bit encryption available using PDW Manager software
Interference Reduction	Frequency Hopping Spread Spectrum (FHSS)
Power Output	24 dBm (250 mW)
Sensitivity	-101 dBm

PDW Manager Software

System Requirements	Microsoft® Windows® XP/Vista/7/8/10
Communications	USB 2.0 (Standard USB A to Micro USB B)
Configuration	Configure devices one at a time

Analog Input

Inputs	Field selectable: 4-20 mA, 0-10 V, 0-5 V, 1-5 V
Accuracy	±0.03% of calibrated span ±1 count
Temperature Drift	0.005% of calibrated span/°C max from 0 to 65°C ambient, 0.01% of calibrated span/°C max from -40 to 0°C ambient
Input Impedance	Voltage ranges: greater than 110 kΩ; Current ranges: < 220 Ω
Signal Loss	Inputs will remain off (open circuit) until wireless units are reconnected.
HART Transparency	Analog input will not interfere with existing HART communications on the wired 4-20 mA signal

Isolated 4-20 mA Transmitter Output

Output Source	Analog input from connected wireless unit
Calibration	Factory calibrated: 4.000 to 20.000 = 4-20 mA output
Accuracy	± 0.1% of span ± 0.004 mA
Loop Power Supply	Internally powered; no external supply needed
Temperature Drift	0.4 µA/°C max from 0 to 65°C ambient, 0.8 µA/°C max from -40 to 0°C ambient
Signal Loss	mA output will become 3.2 mA after approx. 25 seconds
Output Loop Resistance	Power supply	Minimum	Maximum
	24 VDC	10 Ω	900 Ω

Digital Input / Output Terminal

Channels	Four (4) digital connections, independently field selectable as either inputs or outputs
Digital Input Logic High	3 to 5 VDC
Digital Input Logic Low	0 to 1.1 VDC
DI Contact	Dry contact to ground can be used to activate the input
Digital Output Logic High	3 to 5 VDC
Digital Output Logic Low	0 to 0.4 VDC
Source Current	10 mA maximum output current
Sink Current	1.5 mA minimum input current
Signal Loss	Digital output goes to logic high

RS-485 Modbus® RTU Serial Communications

Compatibility	EIA-485
Connectors	Removable screw terminal connector
Max Distance	3,937′ (1,200 m) max
Baud Rate	1200 – 57,600 bps
Transmit Time Delay	Programmable between 0 and 199 ms
Data	8 bit (1 start bit, 1 or 2 stop bits)
Parity	Even, Odd, or None with 2 stop bits
Modbus Timeout	0.5, 1, 2, 3, 4, 5 seconds; user selectable

PDW90 Dimensions

Base Station

16-Module Base Station Dimensions — 16-Module Base Station

Field Unit

Base Station Connections

The diagrams below illustrate the layout of I/O module slots, screw terminal headers, wireless antenna connection, USB programming port, Modbus/power terminals, and LCD display for each base station size.

16-Module Base Station Sub Panel — 16-Module Sub Panel

6-Module Base Station Sub Panel — 6-Module Sub Panel

2-Module Base Station Sub Panel — 2-Module Sub Panel

Base Station Wiring

Power

Connect power to the two-terminal block labeled POWER. Supply voltage: 9–30 VDC.

Power Connection Diagram

Dual Analog Input

Accepts 4-20 mA, 0-10 V, 0-5 V, or 1-5 V. Configure each channel independently. Compatible with HART loop signals (HART data not transmitted wirelessly).

Dual Analog Input Diagram

Dual Analog Output

Outputs 4-20 mA based on remote field unit input or Modbus register. Internally powered, no external supply required.

Dual Analog Output Diagram

Four Digital I/O

Each channel can be set as input or output. Inputs use internal pull-up resistors. Outputs can indicate loss of wireless signal.

Digital I/O Diagram

Dual Relay Outputs

Two mechanical relays, each with common (C), normally open (NO), and normally closed (NC) contacts. Active-low inputs may require swapping NO/NC connections.

Relay Output Diagram

Modbus RTU

Pass-through communication for multiple Modbus-enabled devices. Connect the Modbus Client to the Base Station.

Data Sheet: Predig_LDSW90-Datasheets
Instruction Manual: Predig_PDW90_Manual