1. General Information

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 3500/32M

• Spare Part Number: 141533-01 / 184631-02

• Product Name: 4-Channel Enhanced Relay Module

• Series: 3500 Machinery Protection System

• Module Type: Full-height configurable relay output module

• Application: Provides discrete alarm and trip contacts for rotating machinery; used for auxiliary alarm logic, fan/pump interlock, DCS dry contact transmission; widely applied in non-SIL conventional protection loop.

• Installation Rule: Any full-height slot behind TDI communication module

• Compliance: API 670

2. Functional Description

• Channel Quantity: 4 independent single-pole relay outputs

• Contact Type: SPDT dry contact (NO/NC/COM)

• Logic Mode: Normally Energized / Normally De-energized configurable

• Programmable Logic: AND / OR / Gating / Latch alarm logic

• Contact Life: 100,000 switching cycles under rated load

3. Electrical Specifications

• Backplane Power: +5 VDC from rack backplane

• Power Consumption: 7.5 W typical

• Resistive Load Rating: 250 VAC / 5 A ; 30 VDC / 5 A

• Inductive Load Rating: 250 VAC / 2.5 A ; 30 VDC / 2.5 A

• Response Time: ≤ 2 ms fast relay action

• Isolation Voltage: 1500 VAC channel-to-system isolation

4. Environmental Specifications

• Operating Temperature: -30 °C ~ +65 °C (-22 °F ~ +149 °F)

• Storage Temperature: -40 °C ~ +85 °C (-40 °F ~ +185 °F)

• Relative Humidity: 5% ~ 95% (Non-condensing)

• Anti-vibration: Compliant with API 670 industrial vibration standard

5. Mechanical Specifications

• Structure: Full-height single slot module

• Dimensions (H × W × D): 241.3 × 24.4 × 99.1 mm

• Weight: Approximately 0.53 kg

• Mounting: 3500 standard rack slot installation, hot-swap capable

6. Compatible Devices

7. Key Features

• Four isolated programmable relays for multi-group alarm output

• Enhanced logic function compared with old 3500/32 version

• Durable relay contact with long mechanical service life

• Compact full-height design saving rack installation space

• Wide industrial temperature range for harsh power plant environment

8. Critical Relay Module Comparison

• 3500/32 (Old): Basic 4 relays, simple logic, obsolete version.

• 3500/32M (New): Enhanced 4 relays, rich logic, common alarm card.

• 3500/34 (TMR): 3 redundant relays, 2oo3 voting, SIL3 turbine ETS trip.