Overview
The ABB NE840 (3BSE080211R1), also cataloged as the NE840 Managed Industrial Ethernet Switch, operates as a dedicated hardware component for deterministic data exchange within System 800xA control networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Origin | Sweden |
| Weight | 0.7 kg |
| Dimensions | 52 mm x 100 mm x 101 mm |
| Operating Temp | -40 degC to +70 degC |
| Power Consumption | 5.5 W to 6 W typical |
| Total Ports | 8 Ports |
| Port Configuration | 8 x 10/100 Base-TX, RJ-45 |
| Network Standards | IEEE 800.3, IEEE 800.3u, IEEE 800.3x |
| Operating Voltage | 24 VDC (dual/redundant inputs supported) |
| Input Voltage Range | 19.2 VDC to 60 VDC |
| Protection Class | IP40 |
| Relative Humidity | 5% to 95% non-condensing |
| Diagnostics / Management | Web interface, CLI, SNMP v1/v2c/v3 |
| Redundancy Protocols | FRNT, RSTP, STP |
Firmware Flash Compatibility
Firmware revisions must be validated against the installed System 800xA network baseline prior to deployment. Incompatible firmware may result in mismatched packet handling behavior on deterministic EtherNet/IP segments. All updates should be executed via the CLI using verified binary images to maintain consistent backplane bus communication velocity across redundant switch pairs.
Frequently Asked Questions
Q: Does the NE840 support hot-swapping under load?
A: No. Power must be removed before insertion or removal to prevent backplane electrical stress and potential port controller lockup.
Q: What is the switching latency during redundancy failover?
A: With FRNT enabled, recovery occurs within milliseconds; RSTP typically requires several seconds depending on topology depth.
Q: Can different NE840 firmware versions coexist in one ring?
A: Mixed versions are not recommended due to possible differences in protocol timing and SNMP response structures.
Field Installation Guidelines
Mount the unit on a standard 35 mm DIN rail ensuring proper mechanical engagement. Maintain separation from high-voltage cabling to minimize EMI coupling. Ground the shield terminations at both ends of each twisted-pair segment. Verify that incoming DC supply polarity matches the redundant input wiring diagram before energizing the switch.
ABB Top Products
Customers Also Viewed
Contact: Manski Wong +86 18030205725 manski@cambia.cn
Reviews
There are no reviews yet.