Product Introduction: 3500/62-03-00 136294-01
The 3500/62-03-00 136294-01 is a specific hardware version of the Relay Module for the Bently Nevada 3500 Machinery Protection System. This module acts as the critical action component of the system, converting alarm decisions from monitoring modules (like vibration, speed, or temperature monitors) into physical, hardwired relay contact closures. These contacts are used to initiate emergency shutdowns (ESD), activate auxiliary alarms, or provide status signals to the plant's Distributed Control System (DCS), thereby protecting expensive machinery from catastrophic damage.
Technical Parameters
The key technical specifications for the 3500/62-03-00 136294-01 module are summarized in the table below.
| Parameter | Specification |
|---|---|
| Part Number | 3500/62-03-00 136294-01 |
| System | Bently Nevada 3500 |
| Module Type | Relay Module (4-Channel) |
| Dimensions (H x W x D) | 190 mm x 55 mm x 120 mm (Standard 3500 Rack Slot) |
| Weight | 0.51 kg |
| Number of Relays | 4 independent relays |
| Relay Contact Type | Form C (SPDT - Single Pole Double Throw) |
| Contact Rating | 2 Amps @ 30 VDC (Resistive) / 0.5 Amps @ 120 VAC |
| Default State | De-energized (Fail-Safe); can be configured as latched |
| Operate Time | Typically 5 milliseconds |
| Power Supply | Powered by the 3500 Rack; +24 VDC from the rack's power supply |
| Operating Temperature | -20°C to +65°C |
Application Scenarios
The 3500/62 Relay Module is a fundamental safety component used across all industries that rely on the 3500 system for machinery protection.
Critical Shutdown Functions:
Directly wired to the emergency shutdown circuit of turbines, compressors, or large pumps to automatically stop the machine upon a "Danger" level vibration, overspeed, or high-temperature signal.
Alarm Annunciation:
Used to activate visual or audible alarms (e.g., panel lights, horns) in the control room when an "Alert" level condition is detected, prompting operator investigation.
Sequential Control Logic:
Initiates auxiliary systems based on specific machinery states; for example, starting a lube oil pump or opening a bleed valve when a machine is started up or shut down.
Interface with Plant Control Systems:
Provides a reliable, hardwired status signal (e.g., "Machine Running," "Shutdown Command Active") to the plant's DCS or Safety Instrumented System (SIS).
Redundant Safety Loops:
Used in systems with multiple voting logic (e.g., 2-out-of-3) to ensure a high level of safety integrity, preventing nuisance trips while guaranteeing a shutdown when truly needed.
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