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Model iT401 4-20 mA Alarm Module
Brand: Wilcoxon Sensing TechnologiesThe iT401 is the first alarm module designed to work with any 4-20 mA loop-powered device and/or the iT Series sensor signal-conditioning modules, providing easily-programmable relay activation for use in condition-based monitorinng or process control.
Digital technology, along with simple face-panel push-buttons and a bright digital display means never having to open the unit to alter setpoints. Memory allows user to decide to keep changes permanently, or restore manufacturer defaults.
Features- 35 mm DIN rail mount
- Front-panel tactile membrane switches give access to all settings
- Front-panel 7-segment LED displays
- TBUS connection to iT Series modules
- Digital processing
- Relays have over 2,000 Vac isolation
- Mounts adjacent to iT Series transmitter modules
- External alarm contacts for signal or BOV faults
- Alternate direct 4-20 mA signal input
Specifications
Approvals & Certifications
- CE
Delay Time
- Alarm Action Delay (Each Alarm): 0 to 99 seconds
Display
- Front Panel Alarm LED Display: Orange LED (BOV)
- Front Panel Alarm LED Display: Red LEDs (High)
- Front Panel Alarm LED Display: Yellow LED (Low)
- Front Panel Digital Display: Dual 7-Segment Yellow LED, 0.3” (7.62 mm)
Electrical Connectors
- Front Panel Connectors: 4-Position Removable Screw Terminal Plugs
Humidity
- Maximum 95 % Relative Humidity, Non-Condensing
Input Signal
- 4-20 mA
Load
- Input Signal (Loop Load): 247.5 ohms, ± 5 %
- Relay Contact Load (Inductive): 1/3 HP, 125 Vac
- Relay Contact Load at 70° C (158° F) Resistive: 8 A at 250 Vac
- Relay Contact Load at 70° C (158° F) Resistive: 8 A at 30 Vdc
- Relay Contact Load at 85° C (185° F) Resistive: 5 A at 250 Vac
- Relay Contact Load at 85° C (185° F) Resistive: 5 A at 30 Vdc
Mounting
- 35 mm DIN “T” Rail
Operating Temperature
- -40° to 85° C (-40° to 185° F)
Output
- Redundant 4-20 mA Output: 2 to 22 mA
Power Requirement
- 24 Vdc Nominal
- Curretn, Max. 150 mA
Range
- Altitude, Above Sea Level, Max. 3,000 metres (10,000 ft)
Relay Operation
- Alarm Relay Function: Latching or Non-Lataching
Vibration Effect
- Alarm Set Point [Each Alarm (Vibration Signal)]: 0 to 99 % of Full Scale, in 1 % Increments
Voltage
- Alarm Set Point [Each Alarm (Bias Voltage)]: 0-18 V in 1 V Steps