Overview
Suffix Breakdown & Model Matrix
| Parameter | Specification |
|---|---|
| Base Model | 3500/91 |
| Module Type | EGD Communication Gateway Module |
| I/O Module Type | Ethernet 10BASE-T / 100BASE-TX |
| Physical Interface | RJ-45 Ethernet connection |
| Agency Approval Option | CSA/NRTL/C |
| Communication Protocol | Ethernet Global Data (EGD) Version 2.01 |
| Network Protocol | Ethernet UDP/IP |
| Ethernet Standard | IEEE 802.3 CSMA/CD |
The supplied ordering description identifies the -01 I/O configuration as 10BASE-T / 100BASE-TX Ethernet and the following -01 as the CSA/NRTL/C approval option. The final -01 is retained as supplied because the available data does not define its ordering-matrix meaning in sufficient detail.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/91-01-01-01 |
| Brand | Bently Nevada |
| Origin | Not specified in supplied data |
| Weight | Main Module: 0.79 kg; I/O Module: 0.39 kg |
| Dimensions | Main Module: 241.3 mm x 24.4 mm x 241.8 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 |
| Rack Space | Main Module: 1 full-height front slot; I/O Module: 1 full-height rear slot |
| Ethernet Speed | 10 Mbps / 100 Mbps, auto-sensing |
| Ethernet Interface | RJ-45, 10BASE-T / 100BASE-TX |
| EGD Version | Version 2.01 |
| Producer Data | Rack, module, channel, and data-value status; float data values; float setpoints |
| Consumer Exchanges | Group Reset, Group Trip Multiply, Group Alarm Inhibit, Group Special Alarm Inhibit |
| Compliance | EMC, electrical safety, and RoHS requirements as specified |
| Approval | CSA/NRTL/C option |
Rotor Monitoring Data Communication
The 3500/91 transfers machinery-monitoring information from the 3500 rack to external control systems through Ethernet-based EGD communication. Therefore, the gateway can carry monitored values and status information generated by the rack without changing the underlying measurement function of individual monitoring modules.
For rotating-equipment monitoring, the transmitted data can represent measurements associated with vibration, position, speed, and other rack-monitored parameters. However, the supplied specifications do not define probe scaling, gap-voltage limits, or individual measurement-channel accuracy for the 3500/91 itself. Those parameters remain dependent on the installed 3500 monitoring modules and connected transducers.
Frequently Asked Questions
Q: What Ethernet connection does the 3500/91-01-01-01 use?
A: The specified I/O module provides an RJ-45 interface for 10BASE-T and 100BASE-TX Ethernet, with 10 Mbps and 100 Mbps auto-sensing.
Q: What data can the 3500/91 communicate?
A: Producer exchanges include rack, module, channel, and data-value status, float data values, and float setpoints. Supported consumer exchanges include group reset and alarm-related commands.
Q: Does the 3500/91 perform eddy-current probe scaling?
A: No specific probe-scaling function is defined for this gateway in the supplied data. The module communicates data generated by the 3500 rack and its installed monitoring channels.
Field Installation Guidelines
- Install the main module in the designated full-height front slot of the 3500 rack.
- Install the associated Ethernet I/O module in the designated full-height rear slot.
- Connect the Ethernet network through the specified RJ-45 interface.
- Use twisted-pair Ethernet cabling suitable for the selected 10BASE-T or 100BASE-TX network.
- Route Ethernet cables separately from high-voltage power wiring and high-current switching conductors where practical.
- Maintain cable bend radius and connector clearance according to the selected cable manufacturer’s requirements.
- Verify Ethernet link status after installation and confirm communication with the intended EGD host.
- Confirm rack configuration and exchanged data points before placing external control logic into service.
- Ground and shield associated system wiring according to the 3500 rack installation documentation and the plant grounding scheme.
- Do not apply undocumented probe, sensor, or measurement scaling values to the communication gateway itself.
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