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Model iT401
Intelligent Transmitter Series Alarm
Operating guide
Wilcoxon Sensing Technologies
Tel: +1 (301) 330-8811
8435 Progress Drive, Frederick, MD 21701, USA
Tel: +1 800 WILCOXON
Fax: +1 (301) 330-8873
Amphenol (Maryland), Inc d/b/a Wilcoxon Sensing Technologies
www.wilcoxon.com
97017 Rev B.1 10/18
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Table of Contents
Summary of Contents for Wilcoxon iT401
- Page 1 Intelligent Transmitter Series Alarm Operating guide Wilcoxon Sensing Technologies Tel: +1 (301) 330-8811 8435 Progress Drive, Frederick, MD 21701, USA Tel: +1 800 WILCOXON Fax: +1 (301) 330-8873 Amphenol (Maryland), Inc d/b/a Wilcoxon Sensing Technologies www.wilcoxon.com 97017 Rev B.1 10/18...
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Page 2: Safety Section
1. Make sure that the iT401 is properly grounded to a good earth ground. 2. Do not expose this equipment to rain or moisture. 3. Lethal AC voltage may be present at some of the iT401 connectors due to relay connection circuits. 4. Use common sense and avoid haste! CE certification The iT401 Intelligent Transmitter Series Alarm received CE certification in 2009. -
Page 3: Table Of Contents
Contents Safety section Safety summary 1.0 Theory of operation 2.0 Product description 2.1 Front panel 2.2 Right side label 2.3 Left side label 3.0 Installation 3.1 Jumper selection for 4-20 mA input / output 3.2 Mounting and removal 3.3 Wiring 3.3.1 Power 3.3.2 Alarm relays 3.3.3 External reset... -
Page 4: Theory Of Operation
“span” of the alarm window is adjusted in voltage rather than percent of full scale. 2.0 Product description The iT401 module is a 22mm wide DIN-rail mountable unit. The power required is a nominal +24 VDC which must be supplied through the rear panel TBUS connector. -
Page 5: Front Panel
(see section 5.1). 2.2 Right side label The label on the right side identifies the connections of the iT401 module. Sixteen terminal connections are available on four plug-in termination connectors. -
Page 6: Left Side Label
The software must be changed to reflect the jumper setting (see section 4.3 of this manual). To change the jumper from “IN” to “OUT,” open the case of the iT401 by using a small screwdriver to pop the plastic latches. Figure 6 shows a user releasing the latch. There is a latch on the top and bottom of the unit. -
Page 7: Mounting And Removal
The iT401 can only be powered directly from the TBUS connector at the rear of the module. The label on the left side of the iT401 module (see figure 5) illustrates the TBUS wiring. When the iT401 is used with iT100/200 Series vibration transmitter modules, a mating connector provides power to the iT401 module. -
Page 8: Alarm Relays
It is not connected to any circuit common connection. 3.3.2 Alarm relays The iT401 has three form C relays (pictured at the right). The “COM” is the center pole of the switch, the “N.C.” is the normally closed contact, and the “N.O.” is the normally open contact. -
Page 9: Operation
The module will then be in the normal operating mode and display the signal level on the front panel two-digit LED. When the iT401 is operating with an iT100/200 Series module, the iT401 will wait for the iT100/200 Series module to complete its initialization sequence before the alarm relays become active. -
Page 10: Entering The Programming Mode
4.3 Entering the programming mode To put the iT401 in programming mode, depress and hold the MODE/RESET switch P.P.: until “P.P.” displays on the front panel, and then release. The display will then indicate S.I.: “S.i.” for one second to indicate that the module is in the “signal input,” or programming, mode. -
Page 11: Alarm Module Input Over-Range
Figure 11 - Complex level alarm illustration integer values of DC voltage. Note: The BOV alarm is not operable when the iT401 is set for 4-20mA loop powered sensor input. 4.6 Alarm module input over-range If an input signal to the alarm module exceeds the full-scale of 20mA, the front panel LED elements will flash to indicate the over-range condition. -
Page 12: Maintenance And Troubleshooting
5.0 Maintenance and troubleshooting There is no maintenance the user can perform on the iT401 Alarm module. After troubleshooting, contact Wilcoxon Sensing Technologies technical assistance at 301-330-8811 (see section 6). Table 1 - Error codes and explanations Error code Description of error... -
Page 13: Displaying Serial Number And Manufacturing Date
YY, --, hh, --, mm.) 6.0 Technical assistance 6.1 Technical assistance For technical assistance, please contact Wilcoxon Sensing Technologies at 301-330-8811, fax to 301-330-8873, or email to info@wilcoxon.com. 6.2 Customer service To obtain a return goods authorization number, please contact customer service at 301-330-8811, fax to 301-330-8873, or email info@wilcoxon.com. -
Page 14: Appendix A - Programming Codes
Appendix A – Programming codes This table has the programming codes and item selections in the sequence they appear during programming. Mode Item Definition Description of programming selection Notes Programming P.P. Appears on display when MODE/RESET is first pressed. Indicates programming mode Position will begin upon release of MODE/RESET switch... - Page 15 1.F. Alarm 1, Off Delay Time delay before relay de-activates after returning below/above hysteresis level 00-99 Set as integer seconds of delay Default: 10 1.A. Alarm 1, Activate Manual activation of alarm (for test purposes) Manually set alarm 1 relay ‘ON’ [when in the o.n.
- Page 16 3.t. Alarm 3, Type L.o. Low-going Activates when the signal decreases below the set-point H.i. High-going Activates when the signal increases above Default the set-point b.o. B.O.V. Activates when the sensor DC Bias Output Voltage moves outside the set band (Valid only for signal input source as TBUS) o.F.
- Page 17 Set from 3 mA (03) to 21 mA (21), or can be or o.F. turned off (o.F.) Restore Default r.d. Resets iT401 settings to factory default n.o. Do Not restore Keep settings from programming session (toggle using ‘setpoint’ select using ‘mode’) G.o.
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Page 18: Appendix B - Programming Worksheet Guide
Appendix B – Programming worksheet guide Mode Item Setting Default Description S.i. t.b. or 4.2. t.b. Selects the input to be from the T-BUS or the 4-20 mA connector pin 1.t. Lo, Hi, bo Alarm type as Low, High, or BOV 1.P. -
Page 19: Appendix C - Additional Display And Programming Notes
Appendix C – Additional display and programming notes Programming mode: P.P. Entering programming mode (the left-column of Appendices A and B is only displayed while holding-in Mode-Button) (“S.i.” displayed after releasing Mode-Button) S.i. Source for signal input 4.2. 4-20mA input currently selected t.b. - Page 20 Note: Alarm will be on or off based on current state of alarm (allowing scroll-through programming without changing state). Alarm will be left on or off until the end of programming- mode 2.t. Alarm#2, Type of alarm L.o. Alarm activates when 4-20mA signal is lower than trip-point H.i.
- Page 21 Note: b.o. only displays if S.i. (source) is set for TBUS data 3.P. Alarm#3, trip-Point (%) Minimum programmable setting, 0% or 0V Maximum programmable setting, 99% Maximum programmable setting, 24V Programmable to any percentage between 00 and 99 for H.i. or L.o. Programmable to any integer voltage between 00 and 24 for b.o.
- Page 22 A.3. Alarm#3 is forcibly reset during a failure (internal or external) A.L. All alarms are reset in the event of a failure Note: Only options not contradicting setpoints for “F.A.” are shown Note: In the event of an internal or external failure, the selected alarm will reset (if the failure isn’t catastrophic) Note: An alarm that is not selected for failure-activation or failure-reset, will remain in the state it was before the failure...
- Page 23 Normal Module Operation: minimum 0% of full-scale signal maximum 99% (or greater) of full-scale signal integer xx% of full-scale signal from 00% to 99% (typical) minimum zero-scale, 4mA (note right decimal point) (typical) maximum full-scale, 20mA (note right decimal point) integer xxmA signal, from 00.
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