Model Interpretation

• 3500/33: 16‑Channel Relay Module

• 1st XX (Configuration):

  • 01: Standard (SPDT, epoxy‑sealed, arc suppression)

• 2nd XX (Certification):

  • 00: Standard

  • 01: CSA/ATEX/IECEx (Zone 2)

• Common P/N:

  • 3500/33‑01‑00 (149986‑01, 162291‑01)

  • 3500/33‑01‑01 (certified)

Technical Parameters

Mechanical

• Form Factor: Full‑height (1 front slot + 1 rear slot)

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

• Weight: ~0.7 kg

• Power Consumption: 5.8 W typical

Electrical – Relays

• Channels: 16 independent SPDT outputs

• Contact Rating:

  • 5 A @ 250 VAC

  • 5 A @ 300 VDC

• Min Switched Current: 100 mA @ 12 VDC

• Arc Suppression: 250 Vrms standard

• Contact Life: 100,000 cycles (5 A, 24 VDC)

• Operation: 4‑channel groups, selectable Normally Energized / De‑energized

Electrical – Logic & I/O

• Logic: AND/OR, voting, latching per channel

• Inputs: Any Alert/Danger/Not OK from rack modules

• LEDs: OK, TX/RX, 16×CH ALARM

• Software: 3500 Rack Config v3.3+; Data Acquisition v2.40+

Environmental

• Operating Temp: −30°C to +65°C

• Storage Temp: −40°C to +85°C

• Humidity: 5%–95% RH, non‑condensing

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

• Sealing: Epoxy‑sealed for harsh environments

Compatibility

• Rack: 3500/05 (right of TDI/interface)

• System: All 3500 monitors (vibration, displacement, speed)

• Safety: SIL 2 rated for machinery protection loops

Core Functions

• 16 Independent Relays: High‑density output for large TSI systems (turbines, compressors).

• Flexible Voting Logic: Each channel programmed with AND/OR/latch using any rack alarm status.

• Failsafe Operation: Configurable de‑energized state for safety trips.

• Epoxy Sealing & Arc Protection: Reliable in high‑noise, oily, humid industrial areas.

• Front‑Panel Diagnostics: Quick status for module health, comms, and each relay channel.

Applications

• Power Generation: Steam/gas turbines, generators, BFP (multiple alarm/trip points).

• Oil & Gas: Compressors, pumps, turbines (high‑channel‑count protection).

• Heavy Industry: Large motors, gearboxes, process machinery interlocks.

• TSI & Safety: Vibration, displacement, speed monitoring with many shutdowns.

• DCS/PLC Integration: 16 relay outputs to plant control systems for remote annunciation/tripping.