Bently Nevada 3500/32M 4-Channel Relay Module

Form & Compatibility

• Part Number: 3500/32M (M = “Modbus” firmware)

• Slots: One full-height slot in any 3500 rack (RIM or TDI required for communication)

• Agency Approvals: CE, ATEX Zone 2, IECEx, CSA Class I Div 2, SIL 2 capable per IEC 61508

Channel Architecture

• Channels: 4 independent SPDT relays (Form-C)

• Contact Rating: 5 A @ 30 Vdc / 250 Vac resistive

• Pick-up Time: < 10 ms (coil energize)

• Drop-out Time: < 8 ms (coil de-energize)

• Isolation: 600 V channel-to-channel and channel-to-ground

Configuration & Logic

• Software: 3500 Rack Configuration Software v5.0 or later

• Relay Logic: AND/OR of any proportional or discrete values from monitors in the same rack

• Defaults: Two relays configured to “Trip Multiply” and two to “Danger” per API 670 guidelines

Front-Panel Interface

• LEDs: OK, TX/RX (Modbus), individual Relay Status (4×)

• Programmable Reset: Front-panel push-button or remote reset via Modbus coil 0100h

• Keylock Switch: Prevents accidental configuration changes without removing the module

Power & Environment

• Supply: 24 Vdc ±10 % from rack backplane (typ 3.5 W)

• Operating Temp: –30 °C to +65 °C (–22 °F to +149 °F)

• Humidity: 5 %–95 % non-condensing

• Shock: 10 g half-sine, 11 ms per IEC 60068-2-27

• Vibration: 2 g, 10–500 Hz per IEC 60068-2-6

Ordering & Stock

PLC Autocontroller keeps the 3500/32M (PN 149986-01) in bonded inventory for same-day shipment.

Optional accessories include the 149992-01 labeled terminal block and the 3500/05 Mini-Rack pre-wired for FAT testing.

Contact our experienced team for pricing or more details.

What happens next?