Overview
Suffix Breakdown & Model Matrix
| Parameter | Specification |
|---|---|
| Base Model | 3500/91 |
| Full Model | 3500/91-01-01-00 |
| Module Type | EGD Communication Gateway Module |
| I/O Module Type | Ethernet 10BASE-T / 100BASE-TX |
| Network Connector | RJ-45 |
| Agency Approval | CSA/NRTL/C |
| Secondary Configuration | -00 |
| Communication Protocol | EGD Version 2.01, Ethernet UDP/IP |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/91-01-01-00 |
| Brand | Bently Nevada |
| Dimensions | Main module: 241.3 mm x 24.4 mm x 241.8 mm; I/O module: 241.3 mm x 24.4 mm x 99.1 mm |
| Operating Temp | -30 deg C to +65 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Humidity | Up to 95%, non-condensing |
| Power Consumption | 7.4 W typical |
| Communication Speed | 10 Mbps / 100 Mbps Ethernet |
| Ethernet Standard | IEEE 802.3 and IEEE 802.3u |
| Network Interface | 10BASE-T / 100BASE-TX, RJ-45 |
| Rack Position | Main module: 1 full-height front slot; I/O module: 1 full-height rear slot |
| Producer Data | Rack, module, channel, and data status; real-time floating-point values; floating-point alarm setpoints |
| Consumer Data | Group reset, group trip multiply, group alarm inhibit, group special alarm inhibit |
| Rack Requirement | Requires a 3500/22M Transient Data Interface module |
| Rack Quantity | Maximum 1 3500/91 EGD Gateway module per rack |
| Front Indicators | OK LED; TX/RX LED |
EGD Data Exchange and Rotor Monitoring Interface
The 3500/91 gateway transfers monitored rack data through Ethernet for controller-level processing. It can publish rack, module, channel, status, floating-point measurement, and alarm setpoint information.
Furthermore, the gateway supports network commands for group reset, trip multiply, alarm inhibit, and special alarm inhibit functions. The module therefore provides a defined communication path between the 3500 rack and compatible EGD controller platforms.
For machinery monitoring applications, the transmitted measurement and status data can represent operating information associated with rotor dynamics and protection functions handled by the 3500 monitoring system. The gateway itself does not perform the probe measurement function; the rack monitor modules acquire and process the underlying machinery signals.
Frequently Asked Questions
Q: What Ethernet interfaces does the Bently Nevada 3500/91-01-01-00 support?
A: The module supports 10BASE-T and 100BASE-TX Ethernet through an RJ-45 connector. It uses IEEE 802.3 and IEEE 802.3u network standards.
Q: What rack hardware does the 3500/91 require?
A: The 3500/91 requires a 3500/22M Transient Data Interface module in the rack for communication with monitor modules.
Q: Can multiple 3500/91 EGD Gateway modules operate in one rack?
A: No. The supplied specifications permit only one 3500/91 EGD Gateway module per 3500 rack.
Field Installation Guidelines
- Install the main gateway module in one full-height front rack slot.
- Install the associated Ethernet I/O module in one full-height rear rack slot.
- Verify that the rack contains the required 3500/22M Transient Data Interface module before commissioning.
- Connect the Ethernet cable to the RJ-45 interface and verify correct network termination.
- Route Ethernet communication wiring separately from high-voltage and high-current power conductors where practical.
- Maintain appropriate cable separation from sources of electromagnetic interference.
- Verify the OK LED after installation to confirm normal module operation.
- Check the TX/RX LED during network commissioning to confirm Ethernet communication activity.
- Confirm EGD Version 2.01 and UDP/IP configuration on the connected controller before exchanging data.
- Do not install more than one 3500/91 EGD Gateway module in the same rack.
- Follow the applicable rack grounding, shielding, enclosure, and hazardous-area installation requirements for the installed system.
- Verify the specified operating temperature and humidity limits before placing the rack into continuous service.
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