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Triconex DO3401 Digital Output Module

Triconex DO3401 Digital Output Module

  • Manufacturer: TRICONEX

  • Product No.: DO3401

  • Condition:1000 in stock

  • Product Type: Digital Output Module

  • Product Origin: United States

  • Payment: T/T, Western Union

  • Weight: 2260g

  • Shipping port: Xiamen

  • Warranty: 12 months

  • 24/7 Support
  • 30-Day Returns
  • Fast Shipping

Product Details: Triconex DO3401 Digital Output Module

The Triconex DO3401 Digital Output Module is a reliable and high-performance solution for industrial automation systems. It features Triple Modular Redundancy (TMR) for safety and fault tolerance, providing multiple levels of diagnostics and redundancy for critical digital output control in complex applications.


Key Features & Specifications:

Feature Specification
Points 16 points, commoned
Nominal Output Voltage 24 VDC
Operational Voltage Range 15 to 30 VDC
Absolute Maximum Output Voltage 33 VDC
Absolute Maximum Reverse Input Voltage -0.6 VDC
Output Current <4.8 A (self-limiting), 3.0 A typical
Switching Current (Degraded Mode) >0.7 A (self-limiting), 1.5 A typical
Leakage to Load (Off State) <1 mA
Diagnostic Glitch Duration <2 ms, maximum
Diagnostic Fault Coverage 500 ms detection time for stuck-on and stuck-off faults
Maximum Toggle Rate >20 ms
Minimum Toggle Rate Not applicable
On State Voltage Drop <1.0 VDC @ 1.5 A
Loop-back Scan Time <1.0 ms for all 16 points
Functional Earth Isolation 500 VDC minimum
Protective Earth Isolation 800 VDC minimum
Field Alarms Loss of field power, output point shorted
Loop-back Thresholds 0–5 VDC = Off region, 6–14 VDC = Transition region, 15–30 VDC = On region
Diagnostic Coverage Full channel diagnostics, hot-spare module support

Quad Voter Circuitry:

Each DO3401 Digital Output Module incorporates Quad Voter circuitry, which ensures that only valid output signals are applied to the load. This voting system relies on a series of parallel paths that pass power when two out of three channels (A, B, or C) command them to close, ensuring redundancy and safety in case of faults. The patented Quad Voter system guarantees maximum availability by minimizing the risk of output failures.


Diagnostic & Fault Management:

  • Output Voter Diagnostic (OVD): Periodically runs to check for faults, such as stuck-on or stuck-off points. The OVD routine detects these faults within 500 milliseconds and activates a fault alarm if necessary.
  • Channel-Specific Diagnostics: The module continuously monitors the health of each channel. If a fault is detected in any channel, the Fault indicator lights up to notify operators, and the system alarm is triggered. However, the failure of one channel does not result in a complete module failure due to the TMR design, allowing the module to continue operation even with certain faults.
  • Hot-Spare Module Support: The DO3401 supports hot-swapping, allowing for minimal downtime during maintenance and increasing system reliability.

Baseplate Compatibility:

The DO3401 Digital Output Module can be used with various baseplates, offering flexibility for different application types:

  • Model 2401: Standard baseplate for typical applications.
  • Model 2401L: Baseplate for low-current applications where current limiting is required, featuring a 180 ohm series resistor on each output.
  • DO External Termination Baseplate: Used for high-voltage applications or hazardous locations when paired with the 9671-610 DO Hazardous Location External Termination Panel.
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Product Description

Product Details: Triconex DO3401 Digital Output Module

The Triconex DO3401 Digital Output Module is a reliable and high-performance solution for industrial automation systems. It features Triple Modular Redundancy (TMR) for safety and fault tolerance, providing multiple levels of diagnostics and redundancy for critical digital output control in complex applications.


Key Features & Specifications:

Feature Specification
Points 16 points, commoned
Nominal Output Voltage 24 VDC
Operational Voltage Range 15 to 30 VDC
Absolute Maximum Output Voltage 33 VDC
Absolute Maximum Reverse Input Voltage -0.6 VDC
Output Current <4.8 A (self-limiting), 3.0 A typical
Switching Current (Degraded Mode) >0.7 A (self-limiting), 1.5 A typical
Leakage to Load (Off State) <1 mA
Diagnostic Glitch Duration <2 ms, maximum
Diagnostic Fault Coverage 500 ms detection time for stuck-on and stuck-off faults
Maximum Toggle Rate >20 ms
Minimum Toggle Rate Not applicable
On State Voltage Drop <1.0 VDC @ 1.5 A
Loop-back Scan Time <1.0 ms for all 16 points
Functional Earth Isolation 500 VDC minimum
Protective Earth Isolation 800 VDC minimum
Field Alarms Loss of field power, output point shorted
Loop-back Thresholds 0–5 VDC = Off region, 6–14 VDC = Transition region, 15–30 VDC = On region
Diagnostic Coverage Full channel diagnostics, hot-spare module support

Quad Voter Circuitry:

Each DO3401 Digital Output Module incorporates Quad Voter circuitry, which ensures that only valid output signals are applied to the load. This voting system relies on a series of parallel paths that pass power when two out of three channels (A, B, or C) command them to close, ensuring redundancy and safety in case of faults. The patented Quad Voter system guarantees maximum availability by minimizing the risk of output failures.


Diagnostic & Fault Management:

  • Output Voter Diagnostic (OVD): Periodically runs to check for faults, such as stuck-on or stuck-off points. The OVD routine detects these faults within 500 milliseconds and activates a fault alarm if necessary.
  • Channel-Specific Diagnostics: The module continuously monitors the health of each channel. If a fault is detected in any channel, the Fault indicator lights up to notify operators, and the system alarm is triggered. However, the failure of one channel does not result in a complete module failure due to the TMR design, allowing the module to continue operation even with certain faults.
  • Hot-Spare Module Support: The DO3401 supports hot-swapping, allowing for minimal downtime during maintenance and increasing system reliability.

Baseplate Compatibility:

The DO3401 Digital Output Module can be used with various baseplates, offering flexibility for different application types:

  • Model 2401: Standard baseplate for typical applications.
  • Model 2401L: Baseplate for low-current applications where current limiting is required, featuring a 180 ohm series resistor on each output.
  • DO External Termination Baseplate: Used for high-voltage applications or hazardous locations when paired with the 9671-610 DO Hazardous Location External Termination Panel.

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