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T8403
ICS TRIPLEX
1. Module Architecture & Channel Redundancy
The 24 Vdc Digital Input Module - 40 Channel (T8403) features a triplicated design for each of its 40 field
inputs (as visualized in Figure 6-9: 24Vdc Digital Input Module). This triplication enhances reliability by
providing redundant measurements for each input. The input voltage is measured and compared against
user-configurable threshold voltages to determine and report the field input state, ensuring accuracy and
adaptability to different operational requirements.
2. Cable Fault Detection & Line Monitoring
The module supports advanced fault detection for field cables:
Open & Short-Circuit Detection: When a line-monitoring device is installed at the field switch, the module
can detect open and short-circuit conditions in field cables.
Independent Channel Monitoring: Line monitoring functions are configured independently for each input
channel, allowing granular control and diagnostics for every input path.
3. Sequence of Events (SOE) Reporting
The module includes on-board Sequence of Events (SOE) reporting with a resolution of 1ms. Any change
of state in an input channel triggers an SOE entry, enabling precise tracking of event timing. States are
determined by voltage thresholds that can be configured on a per-channel basis, making the module suitable
for applications requiring high temporal accuracy (e.g., process control, event logging).
4. Status LEDs & Customizable Indications
The module’s front panel features input channel status LEDs (one per field input) that provide real-time
visibility into channel health and state:
LED Behavior: The state of each LED depends on the voltage level of the input I/O signal. The input
voltage is measured and compared against six threshold levels (four configurable, two fixed), which define
seven threshold bands (detailed in Section 8). Each band can be assigned a specific indicator mode: off,
green, red, flashing green, or flashing red.
Default LED Indications (summarized in Table 6-3: Default Digital Input Module LED Indications):
Off: Open field switch (contact).
Green: Closed field switch (contact).
Green – flashing: Associated channel input voltage out of range (below the lowest or above the highest
trip threshold).
Red – flashing: Associated channel fault.
Customization: Users can configure voltage thresholds and LED modes to suit individual application
needs. Without customization, the default indicators are optimized for digital inputs without line monitoring.
5. Application Suitability
The T8403 module is ideal for industrial environments requiring:
High-density digital input (40 channels in a single module).
Redundant measurement for critical inputs.
Detailed fault diagnostics (cable faults, voltage range issues).
Precise event timing (1ms SOE resolution) for sequence-dependent processes.
How we deliver
Supply Ability:In stock,within 3 days send the products.
Price:The more you order,the lower price you will get.
Our products is ship with original factory new package.
We will cover our our professional foam protective packaging to keep worldwide shipping no damaged.
We have many couirer partner,like DHL,TNT,FeDex and UPS
The factory will strictly test all the goods before shipment,and the warehouse staff will also check the
integrity of the product packaging when it is shipped.
We will ship the items with 3 working days after the payment is reached.
Interested in the following products?
Contact Cheryl Qi!
Phone No: +8618150137565
Email: chen@htechplc.com
Whatsapp: +8618150137565
Schneider | Bently Nevada |
140DDI35310 | 3500/15 133292-01 |
140DDI35300 | 3500/15 129486-01 |
140DAI75300 | 3500/15 127610-01 |
140DAI74000 | 3500/15 106M1079-01 |
140CRP93200C | 3500/05-01-02-00-00-01 |
140CRP93200 | 3500/05-01-01-00-00-00 |
140CRP93100 | 33104-00-10-10-02-05 |
140CRA21220 | 330980-71-CN |
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140CPU65160S | 330980-50-05 |
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140CPU53414A | 330930-065-03-05 |
140CPU43412A | 330930-065-01-05 |
140CPU43412 | 330930-065-00-CN |
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