Wilcoxon Sensing Technologies
an Amphenol Company
Frederick, MD 21701, USA Page 1 of 59
Tel: +1 (301) 330-8811
Tel: +1 800 WILCOXON
Fax: +1 (301) 330-8873
www.wilcoxon.com
91457 Rev. C.1 10/18
iT300 Series
Intelligent Configurable Transmitters
Installation and Operating Manual
Models iT300 and iT301
Please read this manual thoroughly before making electrical connections and applying
power to the module. Following the instructions in this manual will ensure the transmitter
delivers optimum performance.
Newer versions of firmware may occasionally be released to address known bugs or add
new features. Make sure you always use the latest firmware version and product
documentation. Both can be found at www.wilcoxon.com.
Wilcoxon Sensing Technologies
an Amphenol Company
Frederick, MD 21701, USA Page 2 of 59
Tel: +1 (301) 330-8811
Tel: +1 800 WILCOXON
Fax: +1 (301) 330-8873
www.wilcoxon.com
91457 Rev. C.1 10/18
Table of Contents
1 Introduction ........................................................................................................................................ 7
2 Description .......................................................................................................................................... 7
3 Key features ........................................................................................................................................ 7
3.1 General features (all models) ...................................................................................................................................................7
3.2 iT301 advanced features ..........................................................................................................................................................7
4 Abbreviations used in this manual ...................................................................................................... 8
5 Safety Regulations and Installation Notes ........................................................................................... 8
5.1 Safety summary ........................................................................................................................................................................8
5.2 Declaration of conformity ........................................................................................................................................................8
6 iT300 family overview ......................................................................................................................... 9
7 System diagrams ................................................................................................................................. 9
7.1 Major system components ......................................................................................................................................................9
7.2 Basic circuit diagram .................................................................................................................................................................9
7.3 Isolation diagram ......................................................................................................................................................................9
8 Front panel LEDs ............................................................................................................................... 10
8.1 Operating modes ................................................................................................................................................................... 10
9 IO ports and signal assignments ........................................................................................................ 11
9.1 Terminal block locations and pin numbers ........................................................................................................................... 11
9.2 Terminal block pin and signal assignments .......................................................................................................................... 11
10 Electrical connections and wiring ...................................................................................................... 12
10.1 ESD precaution .................................................................................................................................................................. 12
10.2 Pluggable terminal blocks ................................................................................................................................................. 12
10.3 Sensor/transducer connections ....................................................................................................................................... 12
10.4 4-20 mA current loop connections ................................................................................................................................... 13
10.5 Dynamic output connections ........................................................................................................................................... 13
10.6 Signal relay connections (iT301) ....................................................................................................................................... 13
10.7 Power supply input connections ...................................................................................................................................... 13
10.8 Cable shielding and earth ground connections ............................................................................................................... 14
11 Power-up .......................................................................................................................................... 14
12 IO ports – detailed description .......................................................................................................... 15
12.1 Vibration sensor input ....................................................................................................................................................... 15
12.1.1 Constant current IEPE power source ........................................................................................................................... 15
12.1.2 BOV acceptable range and sensor fault detection ...................................................................................................... 15
12.2 Temperature sensor input ................................................................................................................................................ 16
12.3 4-20 mA current loop outputs .......................................................................................................................................... 16
12.3.1 Loop error state when sensor fault detected .............................................................................................................. 16
12.3.2 Loop force mode (test mode) ...................................................................................................................................... 16
12.4 Power supply input ........................................................................................................................................................... 16
12.5 BNC dynamic signal output............................................................................................................................................... 16
13 TBUS ................................................................................................................................................. 17
13.1 Stacking modules .............................................................................................................................................................. 17
13.2 Powering via the TBUS ...................................................................................................................................................... 17