Bently Nevada 149986-01 3500 Series Spare 16-Channel Relay Control Module

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Manufacturer: Bently Nevada
Product No.: 149986-01
Country of origin:United States
Product Type: Relay Control Modules
Payment: T/T, Western Union
Weight: 320g
Dimensions: 32.0 x 24.5 x 8.0 cm
Shipping port: Xiamen
Warranty: 12 months

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Description

Executing critical machinery protection and alarm dispatch sequences, the Bently Nevada 149986-01 functions as a high-reliability Spare 16-Channel Relay Control Module within the standard 3500 monitoring rack architecture. This module provides sixteen independent, software-programmable relay outputs that can be mapped to any alarm drive or channel status within the rack configuration. By facilitating discrete physical contact outputs for alert and danger conditions, the 149986-01 ensures seamless integration between continuous vibration monitoring systems and emergency shutdown systems (ESD), PLC networks, or distributed control systems (DCS).

Key Features

16 Independent Relays: Provides extensive alarm routing flexibility without requiring additional auxiliary hardware.
Software-Configurable Logic: Fully compatible with the 3500 Rack Configuration Software to customize voting logic (e.g., 1-of-2, 2-of-3, or individual channel mapping).
Epoxy-Sealed Relay Contacts: Protects contacts against atmospheric contaminants and moisture in harsh industrial control panels.
LED Status Indicators: Front panel diagnostics provide immediate status feedback for each relay channel, simplifies on-site troubleshooting.
Hot-Swappable Design: Allows module replacement in energized racks under bypass controls, preventing unnecessary process downtime.

Industrial Applications

Steam and gas turbine emergency trip logging systems.
Centrifugal compressor surge protection and alarm routing.
Heavy industrial cooling tower fan motor interlocks.
Large-scale power generation machinery shutdown loops.
Petrochemical processing pump and auxiliary gear monitoring.

Technical Specifications

Manufacturer	Bently Nevada
Model Number	149986-01
Product Type	Spare 16-Channel Relay Control Module
Compatible System	Bently Nevada 3500 Series Machinery Protection System
Number of Channels	16 Relay Outputs
Relay Contact Rating	5 A at 120 VAC / 30 VDC (resistive load)
Power Consumption	Typically 5.8 Watts maximum
Operating Temperature	-30 to +65 degC
Humidity Limits	95% non-condensing relative humidity
Net Weight	0.70 kg (1.54 lbs)
Shipping Weight (Calculated)	2.00 kg (4.40 lbs)
Package Dimensions (Calculated)	32.0 x 24.5 x 8.0 cm
Country of Origin	United States

Alternative Models & Compatibility

The 149986-01 is designed specifically to interface with the 3500/32M or 3500/34 series output hardware. Ensure that your corresponding backplane or I/O module (such as the 149992-01 standard or 149992-02 hazardous area terminal block) matches the keying pins on the rack to avoid physical interface misalignment. Note that mixing module firmware versions across redundant relay pairs requires careful configuration parity within the TwinCAT or direct rack monitoring software platforms.

Application Pitfalls & Engineering Notes

When deploying the 16-channel relay module, engineers must account for the default relay states: Normally Energized (NE) or Normally De-energized (ND). If a power failure occurs within the rack, relays configured as NE will drop out, which can trigger an unexpected emergency trip if hardwired to active safety interlocks. Ensure proper bypasses are active during loop testing and firmware upgrades to prevent unintended plant shutdowns.

Installation Guidelines

CRITICAL WARNING: De-energize all connected high-voltage field wiring before removing or inserting the relay control module. Even if the main 3500 rack is running on low DC voltage, the relay contacts themselves may be carrying external 120 VAC control lines. Verify with a calibrated digital multimeter that no external voltage is present at the field terminals before commencing servicing.

Verify that the keying pins on the rack slot align perfectly with the keyway slots on the back of the 149986-01 module.

Slide the module firmly into the rack guide rails until the rear connectors are fully seated in the backplane.

Secure the module to the rack face using the integrated front-panel thumb screws. Tighten with standard hand tools to ensure proper grounding.

Connect the 3500 configuration PC and execute a "Verify Configuration" check to ensure the module is recognized and that the channel maps correspond to active system parameters.

Key Features:

#Bently Nevada 3500 #Relay Control Modules

Can I hot-swap the 149986-01 module while the 3500 rack is powered?

Yes, the module supports hot-swapping under active rack power. However, you must enable bypass controls via software and ensure all connected relay loops are isolated to prevent false system trip signals during transition.

What is the difference between the 149986-01 and the connected I/O module?

The 149986-01 is the internal logic control module containing the main processor and configuration circuitry. It must interface with an external 16-channel relay I/O module (located at the rear of the rack) where the field wiring is terminated.

How do I configure the relay contacts to be Normally Energized?

Relay contact configuration is handled entirely through the Bently Nevada 3500 Rack Configuration Software. The state can be modified under the individual channel configuration tab to suit your fail-safe protocol requirements.

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Returns & Warranty

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12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

Country of origin

Bently Nevada 149986-01 3500 Series Spare 16-Channel Relay Control Module