I. Core Parameters (DO6603 Official Standard Version)

1) Basic Specifications

Model: DO6603 (8-Ch Digital Output, TMR, 24VDC)

Part Number: 7400136

Number of Channels: 8 channels / module (point-to-point isolation)

Output Type: Isolated Solid State Relay Output (SSR), Dry Contact / Wet Contact Optional

Rated Voltage: 24VDC (±10%)

Single Channel Current: Maximum 2A (Resistive Load)

Output Mode: Normally Open (NO) / Normally Closed (NC) Programmable Software

Architecture: TMR Triple Redundancy (Three Circuit Independent Outputs, 2-of-3 Voting)

Safety Level: SIL3 (IEC 61508, TÜV Certification)

Isolation: Field ↔ Backplane 1500VAC; Channel-to-Channel Complete Isolation

Response Time: <1ms (High Speed)

Diagnosis: Open Circuit / Short Circuit / Overload, Load Fault, Readback Check, Over Temperature, Contact Adhesion

Protection: Each Channel Electronic Fuse, Surge Protection

Hot Swap: Supports Online Replacement (System Continues)

Redundancy Capability: Supports Dual DO6603 Redundancy (Primary/Backup Automatic Switching)

Power Supply: 24VDC (Backplane, ±10%)

Power Consumption: Approximately 8W

Operating Temperature: 0℃ ~ +60℃

Storage Temperature: -40℃ ~ +85℃

Certification: CE, UL, CSA, ATEX/IECEx, TÜV SIL3

Installation: Tricon Host Rack / Expansion Rack I/O Slot

Matching Terminal Board: 9661-210 (8 Point Isolated Terminal Board)

Dimensions (L×W×H): Approximately 170 × 40 × 200 mm

Weight: Approximately 0.8 kg

2) Panel Indicator Lights

PWR (Green): Module Power Supply Normal

OK (Green): TMR Voting Normal, Module Running Normal

FAULT (Red): Module / Channel / Diagnostic Fault

CH01–CH08 (Yellow): Channel Output Activation / Fault Indication

3) Key Features of DO6603

Drive Object: Electromagnetic Valve, Relay Coil, Contactor, Alarm Light, Sound and Light Alarm, ESD Shut-off Valve

Load Type: 24VDC DC Load (Resistive / Inductive, Inductive Requires Continuity Diode)

Data Interaction: TriBus Backplane High-Speed Communication, TMR Voting Output

Configuration Tools: TriStation (Configure Channel Mode, Safety-Reliable Values, Alarm Thresholds)

II. Typical Application Scenarios

ESD Emergency Stop: Drive ESD Shut-off Valve, Emergency Stop Relay

BMS Combustion Management: Drive Ignition Transformer, Fuel Valve, Blow-off Valve

Unit Control: Drive Compressor / Turbine Emergency Stop Electromagnetic Valve

Interlock Alarm: Drive Field Alarm Light, Sound and Light Alarm, Horn

III. DO6603 Comparison (Same Platform DO Modules)

DO6603: 8 Channels, 24VDC, 2A, SSR, TMR, SIL3, High-Speed < 1ms, Point-to-Point Isolation; Safety Interlock / ESD/BMS

DO6601: 16 Channels, 24VDC, 0.5A, Transistor, TMR, SIL3, Economy Type; Ordinary Alarm Light / Small Relay

DO6604: 8 Channels, 120/230VAC, 5A, Relay, TMR, SIL3; AC Load (Large Contactor / Pump)