Triconex 3636R Tricon Series Relay Output Module

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Manufacturer: Triconex
Product No.: 3636R
Country of origin:United States
Product Type: Relay Output Modules
Payment: T/T, Western Union
Weight: 4000g
Shipping port: Xiamen
Warranty: 12 months

Description

For auxiliary signaling and non-triplicated isolation requirements within Tricon Safety Instrumented Systems (SIS), the Triconex 3636R provides 32 independent, non-commoned relay outputs. This simplex (non-triplicated) relay output module is designed to interface the Tricon controller with external annunciators, interposing relay panels, and auxiliary systems. By offering high-integrity galvanic isolation up to 125 VAC/VDC, the module ensures robust protection for sensitive control circuitry while managing medium-power digital signals across demanding industrial automation topologies.

Features

32 Isolated Channels: Individually isolated, non-commoned contacts permit the integration of multiple external voltage sources on a single module.
Simplex Operation: Configured as a non-triplicated (RO) module, making it highly cost-effective for non-safety critical signaling, status indicators, and alarm panels.
Broad Voltage Range: Supports control circuit switching up to 125 VAC or 125 VDC, offering wide compatibility with standard field devices.
Low Signal Compatibility: Designed with a minimum permissible load of 10 mA at 5 VDC to ensure reliable execution in low-current dry contact loops.

Applications

Emergency Shutdown (ESD) status and alarm annunciation panels.
Interposing relay cabinet interfacing for high-current MCC contactors.
Distributed Control System (DCS) digital input signal isolation.
Utility and auxiliary subsystem interlocking in petrochemical and power plants.

Technical Specifications

Parameter	Specification Value
Manufacturer	Triconex (Schneider Electric)
Model Number	3636R
Module Type	Relay Output (RO) Module, Non-Triplicated
Number of Channels	32, fully isolated (non-commoned)
Maximum Voltage		Maximum Current Load	2 A resistive, maximum per channel
Minimum Permissible Load	10 mA, 5 VDC
Contact Type	Normally Open (NO) / Form A
System Compatibility	Tricon v9, v10, and v11 Main Chassis
Country of Origin	United States
Shipping Weight (Calculated)	4.0 kg (8.8 lbs)

Connections and Interfaces

Interface Type	Functional Assignment / Description
Backplane Connector	Dual-redundant high-density ribbon connectors interfacing with the Tricon backplane.
External Termination Panel (ETP)	Field wiring connects via dedicated Triconex ETP interface cable (typically 56-pin / 96-pin connector block).
Channel Configuration	32 pairs of terminal points (Output + / Output -) providing complete galvanic separation between circuits.

Empirical Engineering Insights

Alternative Models & Compatibility

The 3636R is a simplex, non-triplicated module. Note that it cannot directly replace triplicated relay output modules like the 3625 or 3623 inside high-availability safety loops where SIL3 voting logic is mandatory. It is fully cross-compatible with standard Tricon v9 and v10 backplane chassis slots allocated for non-triplicated modules.

Application Pitfalls & Engineering Notes

When switching inductive loads such as heavy-duty solenoids or contactor coils, external arc suppression (flyback diodes for DC loads or RC snubbers for AC loads) must be installed at the load. Without adequate suppression, excessive inductive kickback can weld the non-replaceable internal mechanical relay contacts, causing the output channel to fail in a permanently energized state.

Commissioning & Wiring Tips

To prevent contact oxidation (often referred to as 'dry contact' issues), ensure that loop currents do not fall below the module's absolute minimum load parameter of 10 mA at 5 VDC. If a high-impedance digital input on a third-party PLC is being driven, consider installing an external pull-down resistor to guarantee sufficient loop current.

Installation Guidelines

CRITICAL WARNING: Prior to extracting or inserting any module, ensure the system backplane power is either isolated or verify that the chassis configuration explicitly supports hot-swapping for this non-triplicated slot. De-energize all connected external field circuits to prevent arcing across the chassis connectors during insertion. Handlers must wear a grounded ESD wrist strap at all times.

Inspect the module for physical damage, ensuring no debris or bent pins are present on the rear backplane connectors.

Align the module with the guide rails in the designated simplex slot on the Tricon main or expansion chassis.

Slide the module firmly into the chassis slot until the faceplate levers engage, then lock the top and bottom ejector/retractor clips to complete seating.

Perform a loop-back and continuity test on the external termination panel to verify circuit integrity before re-energizing field power loops.

Key Features:

#Relay Output Modules #Triconex Tricon Series

Can the Triconex 3636R module be used in a TMR configuration for safety shutdown loops?

No, the 3636R is a simplex, non-triplicated relay output module. It does not provide the Triple Modular Redundant (TMR) safety architecture required for critical SIL3 ESD actions. It is designed for non-safety signaling, alarms, and auxiliary controls.

What happens if my inductive load does not have arc suppression?

Without external suppression (like a flyback diode for DC or an RC snubber for AC), inductive kickback will cause severe arcing across the relay contacts. This leads to premature contact wear, pitting, or contact welding, causing the channel to fail in a stuck-on state.

Does the 3636R support channels with different voltage sources?

Yes. Because the 32 outputs are non-commoned and individually isolated, you can mix different voltage supplies (e.g., some channels using 24 VDC and others using 120 VAC) on the same module, provided you stay within isolation parameters.

What is the consequence of driving a load below 10 mA?

Operating below the 10 mA minimum load threshold can lead to contact reliability issues. Mechanical relays require a minimum wetting current to break through microscopic oxidation layers on the contacts; dropping below this can cause intermittent open-circuit faults.

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Returns & Warranty

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TECHNICAL SPECIFICATIONS

Country of origin

Triconex 3636R Tricon Series Relay Output Module