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Triconex 3601E TMR DO Module with 16 Non-Commoned Outputs, Quadruplicated Voter Circuitry
Triconex 3601E TMR DO Module with 16 Non-Commoned Outputs, Quadruplicated Voter Circuitry
16 non-commoned outputs Triconex 3601E
Quadruplicated voter circuitry Digital Output Module
Hot-spare capable TMR DO Module
Place of Origin:
USA
Brand Name:
Triconex
Model Number:
3601E
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Product Details
Nominal Voltage:
115 VAC
Type:
TMR, DO
Output Signals:
16, Non-commoned
Voltage Range:
80-155 VAC
Voltage Drop:
< 3V, Typical
Frequency Range:
47-63 Hz
Load Leakage:
2 MA Maximum @ 60 Hz
Chassis Leakage:
4 MA Maximum @ 60 Hz
Highlight:
16 non-commoned outputs Triconex 3601E
,Quadruplicated voter circuitry Digital Output Module
,Hot-spare capable TMR DO Module
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
Each Triple Modular Redundancy (TMR) Digital Output (DO) module receives output signals from the Main Processors on each of three channels. These signals are then voted by special quadruplicated output circuitry on the module to produce a single voted output signal for the field termination. This quadruplicated voter circuitry provides multiple redundancy for all critical signal paths, which effectively guarantees high safety standards and maximum system availability during operation.
To ensure continuous integrity, each module utilizes a voltage-loopback circuit to verify the operation of each output switch independently of the presence of a load. If the detected field voltage fails to match the commanded state of the output point, a LOAD/FUSE alarm indicator is activated to alert the operator of latent faults. Furthermore, ongoing diagnostics are performed on every channel; while a "Fault" indicator signals a channel-specific issue, the module is guaranteed to continue operating properly in the presence of a single fault or even certain multiple faults.
In terms of hardware deployment, all TMR Digital Output Modules support hot-spare capability and require a separate external termination panel (ETP) connected via a cable interface to the Tricon backplane. To ensure maintenance safety, each module is mechanically keyed to prevent improper installation in a configured chassis. Additionally, because these digital outputs are designed to source current to field devices, users must ensure that field power is correctly wired to each individual output point on the field termination.
How is signal integrity maintained across the Triple Modular Redundancy (TMR) path?
The module doesn't just pass a signal; it processes it through quadruplicated voter circuitry. Every output command from the three Main Processors is "voted" on internally. This layered redundancy ensures that if one channel goes rogue, the voted field signal remains accurate, maintaining both SIL-rated safety and process availability.
Is a connected load required for the module to verify its own switch state?
Negative. The module utilizes an onboard voltage-loopback circuit. This allows the hardware to verify switch operation independently of whether a field device is actually drawing current. It's designed specifically to catch latent faults—those hidden failures that only show up when you actually need the output to trip.
What triggers the "LOAD/FUSE" alarm, and is it always a hardware failure?
This alarm triggers the moment the commanded state doesn't match the detected field voltage. While it could be a blown fuse, it's often a discrepancy in the field power loop. It's the module's way of saying: "I tried to energize this point, but the voltage isn't there."
If the "Fault" indicator hits the chassis, is the module considered "dead"?
Not necessarily. In the Triconex world, a Fault indicator usually points to a single channel discrepancy, not a total module collapse. The architecture is "fault-tolerant," meaning the module is guaranteed to stay online and perform correctly even with a single channel failure (and sometimes more, depending on the fault type).
What are the physical constraints for installing these in a live rack?
You can't just shove these in any open slot. Each DO module is mechanically keyed. This physical lockout prevents a technician from accidentally sliding a Digital Output card into a slot configured for Analog Inputs or other incompatible I/O, which could otherwise fry field instruments or fault the backplane.
Does the module provide power to the field devices directly from the backplane?
No. These are current-sourcing outputs, but they require external field power to be wired to each individual point on the termination assembly. The module acts as the "gatekeeper" for the power, but the heavy lifting (the current) comes from your field power distribution.
How is "Zero-Downtime" maintenance handled for failed DO cards?
The platform fully supports Hot-Spare capability. You can keep a second module seated and ready to take over, or swap a faulted module while the system is hot. Because the logic is handled by the Main Processors and the voting is hardware-based, the process never misses a beat during the swap.
Why is an ETP (External Termination Panel) mandatory for these DO modules?
The DO modules don't have screw terminals on the faceplate. They interface with the Tricon backplane via high-density cables that run to a dedicated ETP. This separates the sensitive logic electronics from the "messy" field wiring, making it easier to manage power distribution and loop testing without disturbing the main chassis.
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