Model Interpretation

3500/34‑XX‑XX

3500/34: TMR Relay Module (6‑channel)

1st XX (Configuration):

01: Standard (6 relays, 24 VDC coil)

02: High‑current contacts (5 A resistive)

2nd XX (Certification):

00: Standard

01: CSA/ATEX/IECEx (Zone 2)

Common P/N: 3500/34‑01‑00 (125720‑01)

Technical Parameters

Mechanical

Form Factor: Full‑height module (1 slot)

Dimensions (H×W×D): 241 mm × 24.4 mm × 242 mm

Weight: ~0.8 kg

Installation: Any slot in 3500 rack; hot‑swappable

Power Consumption: 6 W typical

Electrical – Relay Outputs

Channels: 6 independent Form C (NO/NC/COM)

Contact Rating:

Resistive: 5 A @ 30 VDC

Inductive: 3 A @ 30 VDC

Coil Voltage: 24 VDC (supplied by rack backplane)

Response Time: <25 ms

Voting Logic: 2‑out‑of‑3 TMR per relay (3 independent circuits)

Fault Isolation: Single‑channel failure does not affect output

Environmental

Operating Temp: −30°C to +65°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: SIL 3, CE, UL, CSA, ATEX/IECEx (Zone 2)

Compliance: API 670, IEC 61508

Compatibility

Rack: 3500/05 (all slots)

Monitors: All 3500 series (40M, 42M, 44M, etc.)

Software: 3500 Rack Config v3.3+ (relay mapping, logic setup)

System: TMR‑configured 3500 systems (critical protection)

Core Functions

TMR Fault Tolerance: Three independent processing paths per relay; 2‑out‑of‑3 voting ensures valid output even with one channel fault.

6‑Channel Isolated Relays: Map any alarm/danger from monitors to relays for DCS/PLC trip interlocks.

Fail‑Safe Operation: Relays de‑energize on fault/power loss (safe state for shutdowns).

Diagnostics & Bypass: Self‑check, relay coil monitoring, and channel bypass for maintenance.

High‑Speed Switching: <25 ms response for fast machine protection.

Applications

Power Generation: Steam/gas turbine emergency shutdown (ESD), generator trip, BFP protection.

Oil & Gas: Centrifugal compressor anti‑surge, high‑speed trip, process safety interlocks.

Heavy Industry: Critical motor, gearbox, and fan vibration trip systems.

Safety‑Critical TSI: SIL 3‑rated turbine supervisory instrumentation for high‑integrity plants.

Redundant Protection: Any rotating machinery requiring zero single‑point failure in alarm/shutdown paths.