Wilcoxon Sensing Technologies
an Amphenol Company
Germantown, MD 20876 USA Page 7 of 59
Tel: +1 (301) 330-8811
Tel: +1 800 WILCOXON
Fax: +1 (301) 330-8873
www.wilcoxon.com
1Introduction
This document contains information on the installation,
configuration and operation of the iT300 Series of Intelligent
Transmitters. The vibration transmitters are designed and
manufactured in the USA by Wilcoxon Sensing Technologies,
Germantown, Maryland.
2Description
The iT300 Series of configurable transmitter modules perform
acquisition and processing of dynamic vibration signals. The
transmitters are field configurable. Configurable parameters
include: input signal type, measurement bandwidth, detector
type, output type, English or metric measurement units, 4-20
mA driving source and full-scale range. Configuration may be
performed in the field, using a common web browser. No
custom or proprietary software is required. There are no
hardware jumpers to set.
The iT300/301 transmitters accept vibration signals from
piezoelectric (IEPE-type) accelerometers, piezovelocity
transducers (PVT™) and other sensors with comparable electrical
characteristics. They also feature an input for connection to a
Model 786T-type (or compatible) temperature sensor.
The iT300/301 transmitter module conditions, digitizes and
processes the input signal using powerful DSP technology. All
filtering, frequency selection, sub-sampling and power detection
is performed digitally, for consistent, reliable results. Selected
measurement results are then scaled and converted to dual 4-20
mA analog outputs. On iT301 models, measurement results and
operational status are also mapped to Modbus digital outputs.
iT300/301 transmitters are housed in a durable plastic enclosure
with a 35 mm DIN rail mount. The transmitter front panel
features multiple LEDs, a BNC connector for the buffered sensor
output, a “factory restore” push-button switch, and a standard
RJ45 jack for the Ethernet connection. The LEDs provide at-a-
glance operational status and indicate when power, sensor and
4-20 mA loops are correctly connected to the transmitter and
working properly. Removable, uniquely-keyed terminal blocks
allow for easy wiring and ensure correct terminal block
installation into the various transmitter IO ports.
3Key features
3.1 General features (all models)
Field configurable via standard web browser
0.2 Hz – 20 kHz signal bandwidth (-3.0 dB, -0.1 dB)
20 V p-p sensor input range, >90 dB dynamic range
DSP signal processing with 1,600-line FFT
Built-in 4.5 mA constant current source for IEPE sensors
Buffered sensor output on the front-panel BNC connector
Buffered, dynamic signal outputs on terminal block
RMS, peak and peak-to-peak detection
Fast, true-peak detector for capturing short transients and
impulses
Dual, 4-20 mA active current loop outputs with diagnostic
test mode
Two configurable frequency bands
Digital acceleration-to-velocity or velocity-to-displacement
conversion, based on sensor type
Selectable English or metric measurement units
6-way isolated (500 VAC) IO ports to prevent ground loops
Wide, 11-32 VDC power supply input with reverse polarity
and transient protection
TBUS power and data buses
ESD and short circuit protection on all ports
Pluggable, individually-keyed terminal blocks with screw
terminals on all ports
Multiple front panel LED status indicators
Front panel factory restore switch
Auto-MDIX 10/100 Ethernet with HTTP web server
Field upgradable firmware
35 mm DIN rail mounting, stackable on TBUS
4-terminal wide (22.5 mm) modular housing
Wide operating temperature range of -40 °C to +70 °C
CE approvals, RoHS compliant
3.2 iT301 advanced features
Configurable alarms
Relay output with NO/NC contacts and test mode
Modbus over RS485
Modbus TCP over Ethernet
