Precision Digital Corporation PDW30, Instruction Manual

Page: 5 / 30

PDW30 Point-to-Point Wireless Bridge Instruction Manual
5
Specifications
Except where noted all specifications apply to operation at +25°C.
General
Display 32-character dual-line alphanumeric
dot matrix LCD display with back-
light (4.68mm x 2.21mm characters)
Display Orien-
tation 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 soft-
ware.
Recalibration All ranges are calibrated at the fac-
tory. Recalibration is recommended
at least every 12 months.
Process/ Digi-
tal 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 program settings.
Power 12-28 VDC, 5 W max
Non-Volatile
Memory All programmed settings are stored
in non-volatile memory for a mini-
mum 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 humid-
ity: 0 to 90% non-condensing
Connections Removable screw terminal blocks
accept 12 to 22 AWG wire.
Enclosure Cast aluminum with glass window,
0.30% max copper content, corro-
sion resistant powder coating, color:
blue. NEMA 4X/IP68. Three 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 Di-
mensions on page 28 for mounting
space requirements.
Signal Con-
nector Tight-
ening Torque 2.2 lb-in (0.25 Nm)
Shipping Di-
mensions 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 Spec-
trum (FHSS)
Power Output 24 dBm (250 mW)
Sensitivity -101 dBm
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
Calibration
Range Input Range Min Span Input 1 & 2
4-20 mA

10 V
0.15 mA
0.01 V
An error will appear if the input 1
and input 2 signals are too close.
Input
Impedance Voltage ranges: greater than 500
k

; Current ranges: 50 - 100

(de-
pending on resettable fuse imped-
ance)
Signal Loss Inputs will remain off (open circuit)
until wireless units are reconnected.
HART Trans-
parency 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 wire-
less unit
Calibration Factory calibrated: 4.000 to 20.000
= 4-20 mA output
Accuracy ± 0.1% of span ± 0.004 mA
Temperature
Drift 0.4 µA/

C max from 0 to 65

C ambi-
ent, 0.8 µA/

C max from -40 to 0

C
ambient Note: Analog output drift is
separate from input drift.
Signal Loss mA output will become 3.2 mA after
approx. 25 seconds
Output Loop
Resistance Power supply Minimum Maximum
24 VDC
10-ohms 900-ohms
Digital Input / Output Terminal
Channels Four (4) digital connections, inde-
pendently field selectable as either
inputs or outputs
DI Logic High 3 to 5 VDC
DI Logic Low 0 to 1.25 VDC
DO Logic High 3.1 to 3.3 VDC
DO Logic Low 0 to 0.4 VDC
Source Cur-
rent 0.5 mA maximum output current
Sink Current 1.5 mA minimum input current
Signal Loss Digital output goes to logic high