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iT401

Product catalog summary

Specifications Overview:
The iT401 is a 4-20 mA alarm module designed for use with any 4-20 mA device. It features tri-color LED displays for alarm status, indicating high, low, or BOV alarms. Power is supplied via a TBUS connector from an external power source.

Key Features:

Front panel tactile membranes for settings access.
7-segment LED displays for digital processing.
External alarm contacts for signal or BOV faults.
Programmable relay activation with >2,000 VAC isolation.

Input Specifications:

Front panel push buttons for mode/reset and parameter changes.
4-20 mA input signal with a loop load of 247.5 Ω, ± 5%.

Output Specifications:

Alarm relay contacts with latching or non-latching functions.
Relay contact load: 8 Amp at 250 VAC/30 VDC (resistive), 5 Amp at 250 VAC/30 VDC (resistive), 1/3 HP at 125 VAC (inductive).
Alarm trip setpoints from 0 to 99% of full scale and bias voltage from 0 to 18 V.
Redundant 4-20 mA output ranging from 2 mA to 22 mA.

Physical Specifications:

Mounting on a 35 mm DIN "T" rail.
Dimensions: Width 22.5 mm, Depth 127 mm, Height 100 mm.
Front panel features dual 7-segment yellow LED displays and tri-color alarm LED displays.

Environmental Specifications:

Operating temperature range from –40° to +85°C.
Maximum humidity of 95% RH, non-condensing.
Altitude up to 3,000 meters (10,000 ft.) above sea level.
Power requirements: 24 VDC nominal, 150 mA maximum.

Catalog excerpts

4-20 mA alarm module iT401SPECIFICATIONS INPUT Front panel push buttons: Mode/reset Increase/decrease Reset input, terminal connection Input signal: 4-20 mA input Loop load OUTPUT Alarm relay contacts, 1 form-C Alarm relay function Relay contact load: 70°C (resistive) 85°C (resistive) Inductive Alarm trip (each alarm) Alarm action delay (each alarm) Alarm setpoint (each alarm): Vibration signal Bias voltage Redundant 4-20 mA output PHYSICAL Mounting Width Depth, front of panel to back of DIN rail Height Front panel switches Front panel digital display Front panel alarm LED display1 Front panel connectors ENVIRONMENTAL Operating temperature Humidity, maximum Altitude, above sea level, maximum Power requirements: Voltage Current, maximum controls mode for programming or reset of latched relays Changes programming parameters contact closure for reset of latched relays uses signal from any 4-20 mA source 247.5 O, ± 5% (3) alarm relays latching or non-latching 8 Amp, 250 VAC/30 VDC 5 Amp, 250 VAC/30 VDC 1/3 HP, 125 VAC high or low setpoint1 2 3 0 to 99 seconds 0 to 99% of full scale, in 1% increments 0 to 18 V in 1V steps2 2 mA to 22 mA2 35 mm DIN “T” rail 22.5 mm 127 mm 100 mm tactile membrane dual 7-segment yellow LED, 0.3” high (red), low (yellow), BOV (orange) 4-position removable screw terminal plugs Note: Due to continuous process improvement, specifications are subject to change without notice. This document is cleared for public release. 8435 Progress Drive Frederick, MD 21701 USA buy.wilcoxon.com www.wilcoxon.com • Front panel tactile membranes give access to all settings • Front panel 7-segment LED displays • Digital processing • External alarm contacts for signal or BOV faults • Works with any 4-20 mA device • Easily programmable relay activation • Relays have >2,000 VAC isolation • Manufactured in ISO 9001 facility Notes: 1 The three front panel alarm status LED displays are tri-color: red, yellow and orange; are illuminated when that alarm is “On” with color indicating whether it was set as a high, low or BOV alarm. Power for the iT401 is supplied via TBUS connector inside DIN-mount from external power supply (using iT032 and iT033/034/035 connectors). Current draw is determined at 24 Volts DC power. Accessories supplied: (1) iT032 TBUS connector for iT401 module; (4) iT042 4-position wire connec

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