Bently 3500-15 114M5330-01 Power Supply Module

Description

• Product Model: Bently 3500-15 114M5330-01
• Product Brand: Bently Nevada / GE
• Product Series: 3500 Series — Power Supply Module
• Key Features:
  1. Half-height power supply module (AC / DC input versions) for Bently 3500 racks
  2. Can be used in redundant configuration (primary / backup) without rack shutdown
  3. Supports low-voltage DC input (20–30 Vdc) or higher voltage DC/AC depending on version
  4. “Supply OK” LED indication, hot-swap capability if redundant supply is present

Applications & Industry Context

In the Bently 3500 machinery protection ecosystem, reliability is nonnegotiable: sensor inputs, vibration analytics, alarm logic, and protection logic all depend on stable power. The 3500-15 114M5330-01 module serves as the core DC power supply (or AC/DC converter) for a 3500 rack, ensuring that downstream modules (monitor, interface, communication, etc.) get clean, regulated voltage.

Whether in a gas turbine monitoring rack, compressor protection cabinet, or rotating machinery skid, the 3500 racks often house multiple modules that demand consistent, uninterrupted power. Any power glitch, noise, or failure can compromise measurement integrity or alarm logic. The 114M5330-01 is engineered to address these challenges.

In many facilities, redundancy is built into system architecture: two power supplies (primary and backup) are used so that one can be pulled or tested without shutting down the rack. This module supports that redundancy strategy, offering “hot swap” behavior—removing or inserting it does not disrupt rack operation provided a second supply remains active.

Upgrades or retrofits also rely on these modules. For example, replacing aging or under-performing power modules with a newer or refurbished 114M5330-01 ensures the rack continues to meet modern voltage stability and supply demands, without replacing the entire rack backbone.

Product Role & System Fit

Within a 3500 rack, the 3500-15 114M5330-01 occupies designated power supply slots—typically located on the leftmost side of the rack, in “half-height” positions.  The 3500 architecture is designed to accept one or two 3500/15 modules. If two are installed, the lower slot acts as primary and the upper acts as backup. Removing or inserting one module while a second is present does not interrupt rack operation.

This module is responsible for converting input power (whether DC or AC, depending on version) into the internal voltages the 3500 modules need to function. It supplies regulated voltages to all modules in the rack.

In a system design, the 114M5330-01 is part of the foundational infrastructure: before any analog reading, procession, communication, or protection logic can run, the power module must first do its job reliably. It is not a “smart” or logic module—its job is power. But its reliability underpins the entire system.

Because the architecture supports redundancy, the power supply module is often considered a “fail-soft” component—its failure, with a backup present, does not immediately stop the rack. This design choice enhances uptime and maintainability.

Technical Features & Benefits

Here are the key features and how they translate into real-world benefit:

Half-Height Module Design
The 114M5330-01 is built in a half-height module, saving vertical rack space. This enables more modular arrangement and leaves room for other modules above or below.

AC / DC Input Flexibility & Versions
The 3500/15 series supports various versions: low-voltage DC input (20–30 Vdc) is one version; other versions may support AC or high-voltage DC as input.  This flexibility allows the same rack design to suit different site power configurations.

Redundancy & Hot-Swap Capability
When two 114M5330-01 modules are installed, one acts as primary, the other as backup. The system is designed so that you can remove or insert one supply without disrupting the rack, as long as the other is active. This feature is important in critical monitoring systems where uptime is essential.

“Supply OK” LED Indicator
The front panel includes a green LED labeled “Supply OK” (or equivalent) that indicates when output voltages are within tolerance. This provides visual confirmation during maintenance or power checks.

Wide Temperature / Environmental Range
The module is rated for operation from approximately –30 °C to +65 °C, and storage from –40 °C to +85 °C.  It is built to survive typical industrial environments (vibration, ambient heating, etc.).

Physical & Mechanical Specs
Vendors list module dimensions approximately 120.7 mm × 50.8 mm × 251.5 mm (4.75 in × 2.0 in × 9.9 in)  and weight around 1.14 kg (or ~3.06 lb)

No Minimum Load Requirement
According to the documentation, there is no minimum rack load to maintain operation. The supply outputs remain regulated even under light load.

Line Noise Filtering & Input Protection
The module includes built-in line noise filters and protective circuits so that input fluctuations or noise are mitigated before they affect rack modules.

Dual Use in AC/DC or High/Low Voltage Configurations
The 3500/15 family can support combinations of AC and DC supplies in the same rack. For instance, the primary supply can be AC while the backup is DC (or vice versa), as long as they are compatible with the system input requirements.

Technical Specifications Table

Here is a summary table based on compiled vendor and datasheet information:

Installation & Maintenance Insights

Here are practical tips from experience with rack power modules like 3500-15 114M5330-01:

Slot & Module Placement
Place the module in the designated leftmost “power” slots of the rack. If using redundant supply, ensure one is in the lower (primary) and the other in the upper (backup) position.

Hot-Swap Behavior
One of the key advantages is that you can remove or insert a 114M5330-01 module without taking down the rack—so long as the second supply is functioning. That enables maintenance with minimal process disruption.

Input Wiring & Protection
For proper operation, ensure input wiring (DC or AC as applicable) is sized correctly, protected from surges, and includes filtering or transient suppression. Use isolated grounds, shielded cables if required, and protect against input voltage swings.

LED / Diagnostic Checks
On startup or during operation, verify that the “Supply OK” LED is lit (green). If not, it suggests voltage out-of-tolerance or module fault. Use LED as quick diagnostic tool before deeper measurement.

Load Testing & Capacity Planning
Before going live, measure the total current draw of the rack modules and ensure the power supply can handle peak loads plus margin. Overloading may reduce reliability or stability.

Periodic Inspection
Check module connectors, cooling vents, and wiring for dust accumulation, corrosion, or loose connections. Thermal stress or vibration may loosen connectors over time.

Spare / Redundancy Planning
Because power modules are critical, keep at least one spare 114M5330-01 module (or compatible variant) in maintenance inventory. Pretesting and matching firmware/electronics can reduce downtime in replacement.

Firmware / Compatibility Checks
While power modules are mostly analog/regulation, ensure they are compatible with the rack configuration and input type (DC vs AC). If your rack supports both AC and DC versions, ensure correct pairing and switch-overs.

Environmental and Thermal Management
In tightly packed racks, monitor temperature rise around the module area. Ensure adequate airflow and avoid heat sources adjacent that can stress the supply’s thermal performance.