Description
Bently Nevada 3500/93 135785-02C | System Display | 3500 Machinery Protection System
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 3500/93 |
| Part Number | 135785-02C |
| Manufacturer | Bently Nevada |
| Product Type | System Display |
| System | 3500 Machinery Protection System |
| Primary Function | Local/remote indication of rack information |
| Display Data | System events, alarms, channel and monitor data |
| Configuration | 3500 Rack Configuration Software |
| Maximum Power Consumption | 15.5 W, display unit + display interface module |
| Standard Remote Distance | Up to 100 ft |
| Extended Distance | Up to 4,000 ft with external power supply |
| Mounting Options | Face, 19-inch EIA rack, panel, independent |
| Compliance Basis | API 670 |
| Rack Interface | Display Interface Module (DIM) |
The 3500/93 is designed around API 670 requirements and provides visual access to information residing in the 3500 rack, including system event lists, alarm event lists, and data from channels, monitor modules, relay modules, Keyphasor modules, and tachometer modules.
Product Introduction
Bently Nevada 3500/93 135785-02C System Display
The Bently Nevada 3500/93 135785-02C is a system display for the 3500 Machinery Protection System, providing operators and maintenance personnel with a direct visual indication of rack status and machinery-monitoring information. It is not a measurement channel or protection monitor itself; instead, it presents information already collected and processed by the 3500 rack. The display can show system events, alarm events, and data associated with the installed monitor, relay, Keyphasor, and tachometer modules.
The 3500/93 135785-02C is useful where the plant needs local indication at the machinery-protection rack or a remotely mounted display in a control or equipment area. The documented installation options include direct face mounting on a full-size 3500 rack, 19-inch EIA rack mounting, panel mounting, and independent mounting. For remote installations, the standard distance is 100 ft, with the external-power arrangement extending the distance to as much as 4,000 ft.
135785-02
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
A machinery-protection display is often treated as a simple HMI, but the 3500/93 is tied specifically to the 3500 rack architecture. A display replacement can fail to communicate if the display interface hardware, rack position, configuration, or mounting arrangement does not match the installed system.
Typical Applications
- Steam Turbine Monitoring: Local display of vibration, position, speed, and protection alarms.
- Gas Turbine Packages: Visual indication of 3500 machinery-protection status near the turbine enclosure.
- Compressors and Pumps: Maintenance access to rack alarms and monitored machine parameters.
- Power Generation Plants: Local or remote display of the 3500 protection system in equipment rooms or control areas.
Technical Pitfalls to Avoid
- Do not confuse the 3500/93 with a monitor module.
The 3500/93 displays information; it does not replace modules such as the 3500/42M vibration monitor, 3500/50 tachometer monitor, or 3500/65 temperature monitor. - Check the exact display part number.
The 3500/93 family contains different display configurations. The 135785-02C designation should be matched exactly during procurement rather than assuming every 3500/93 display is interchangeable. Current secondary documentation specifically identifies 135785-02C as a 3500/93 display unit. - Check the Display Interface Module position.
For face mounting on a full-size 3500 rack, the DIM is specified for slot 15, the right-most rack slot. This mounting arrangement is not compatible with the 3500 Mini-rack. - Do not confuse the 3500/93 with the 3500/92.
The 3500/92 is a communication gateway, while the 3500/93 is the system display. The two have very different functions even though they are commonly listed together in 3500 system catalogs. - Check remote-distance requirements.
The documented standard distance is up to 100 ft. If the display is located farther from the rack, the external power-supply arrangement becomes important; do not assume the rack can power a display over an arbitrary cable length. - Use the correct configuration software.
The 3500/93 display is configured using 3500 Rack Configuration Software. A replacement display should be evaluated as part of the existing 3500 configuration rather than as a generic industrial monitor.
Related Products
- Bently Nevada 3500/92 136180-01 — Communication gateway for the 3500 system; used for external data communications rather than local visual indication.
- Bently Nevada 3500/22M 288055-01 — Transient Data Interface module for 3500 rack data collection and communication.
- Bently Nevada 3500/20 — Rack Interface Module family providing rack-level interface functions.
- Bently Nevada 3500/42M 140482-01 — Four-channel monitor used for vibration and position measurements; unlike the 3500/93, it performs measurement/protection functions.
- Bently Nevada 3500/50 133442-01 — Tachometer module for speed and Keyphasor-related monitoring.
- Bently Nevada 3500/54 — Tachometer/overspeed monitoring family for machinery-speed protection applications.
- Bently Nevada 3500/65 — Temperature monitor for RTD and thermocouple inputs.
- Bently Nevada 3500/94 — Related display family for 3500 system visualization; verify exact generation and interface requirements before substitution.
- Bently Nevada 3500 Rack Configuration Software — Required configuration environment for the 3500/93 display.
- Bently Nevada 3500 Machinery Protection System — Host platform for the 3500/93 system display.
Procurement note: The 3500/93 135785-02C is an interface/display component, not a protection monitor. When replacing one, verify the exact 135785-02C designation, the associated Display Interface Module, rack type, mounting method, cable distance, and existing 3500 configuration. Do not substitute a 3500/92 communication gateway simply because both modules are associated with rack-level system information.
