Allen-Bradley 1794-TB37DS Flex I/O Terminal Base Unit
The Allen-Bradley 1794-TB37DS, also cataloged as the 1794-TB37DS Terminal Base Unit, operates as a dedicated hardware component for field signal termination and module backplane interfacing within Allen-Bradley Flex I/O systems. The unit incorporates a 37-pin D-shell interface to connect pre-wired field cable assemblies directly to inserted 1794 I/O modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-TB37DS |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.30 lbs (0.14 kg) |
| Dimensions | Standard Flex I/O Base Dimensions |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Passive Terminal Base Component |
| Interface Connector | 37-pin D-shell female connector |
| Enclosure Rating | IP20 |
| Mounting Type | TS35 DIN rail or panel mount |
| Product Category | Terminal Base Unit / Panel Accessory |
EtherNet/IP Deterministic Networks & Backplane Bus Velocity
The 1794-TB37DS terminal base connects inserted functional modules directly to the Flexbus backplane, facilitating high-velocity communication with EtherNet/IP adapters. Utilizing a 37-pin D-shell connection interface permits rapid field harness installation and eliminates individual point-to-point wiring errors. Internal signal traces are routed to maintain physical isolation and prevent cross-talk between backplane communication signals and field I/O lines.
Frequently Asked Questions
Q: What interface connector type is provided on the 1794-TB37DS terminal base?
A: The base unit features an integrated 37-pin D-shell connector designed for rapid mating with multi-conductor pre-wired cables.
Q: What ingress protection rating applies to the 1794-TB37DS base unit?
A: The chassis carries an IP20 open-style enclosure rating, requiring installation inside a suitable control cabinet.
Q: How is the 1794-TB37DS terminal base secured inside an instrument cabinet?
A: The unit mounts onto standard TS35 DIN rails or can be screwed directly to a cabinet panel plate.
Field Installation Guidelines
- Snap the 1794-TB37DS terminal base onto a grounded TS35 DIN rail or secure it to the enclosure backpanel using screws.
- Slide the unit laterally into adjacent terminal bases to ensure the Flexbus backplane connectors lock together completely.
- Plug the pre-wired 37-pin D-shell cable harness into the base interface and tighten the connector retention screws.
- Set the module mechanical keyswitch on the terminal base to the designated position required for the specific I/O card.
- Ensure the DIN rail or panel surface is grounded to provide electrostatic discharge protection across the I/O assembly.
Allen-Bradley 1794-TB37DS Flex I/O Terminal Base Unit
Allen-Bradley 1794-TB37DS Flex I/O Terminal Base Unit
The Allen-Bradley 1794-TB37DS, also cataloged as the 1794-TB37DS Terminal Base Unit, operates as a dedicated hardware component for field signal termination and module backplane interfacing within Allen-Bradley Flex I/O systems. The unit incorporates a 37-pin D-shell interface to connect pre-wired field cable assemblies directly to inserted 1794 I/O modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-TB37DS |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.30 lbs (0.14 kg) |
| Dimensions | Standard Flex I/O Base Dimensions |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Passive Terminal Base Component |
| Interface Connector | 37-pin D-shell female connector |
| Enclosure Rating | IP20 |
| Mounting Type | TS35 DIN rail or panel mount |
| Product Category | Terminal Base Unit / Panel Accessory |
EtherNet/IP Deterministic Networks & Backplane Bus Velocity
The 1794-TB37DS terminal base connects inserted functional modules directly to the Flexbus backplane, facilitating high-velocity communication with EtherNet/IP adapters. Utilizing a 37-pin D-shell connection interface permits rapid field harness installation and eliminates individual point-to-point wiring errors. Internal signal traces are routed to maintain physical isolation and prevent cross-talk between backplane communication signals and field I/O lines.
Frequently Asked Questions
Q: What interface connector type is provided on the 1794-TB37DS terminal base?
A: The base unit features an integrated 37-pin D-shell connector designed for rapid mating with multi-conductor pre-wired cables.
Q: What ingress protection rating applies to the 1794-TB37DS base unit?
A: The chassis carries an IP20 open-style enclosure rating, requiring installation inside a suitable control cabinet.
Q: How is the 1794-TB37DS terminal base secured inside an instrument cabinet?
A: The unit mounts onto standard TS35 DIN rails or can be screwed directly to a cabinet panel plate.
Field Installation Guidelines
- Snap the 1794-TB37DS terminal base onto a grounded TS35 DIN rail or secure it to the enclosure backpanel using screws.
- Slide the unit laterally into adjacent terminal bases to ensure the Flexbus backplane connectors lock together completely.
- Plug the pre-wired 37-pin D-shell cable harness into the base interface and tighten the connector retention screws.
- Set the module mechanical keyswitch on the terminal base to the designated position required for the specific I/O card.
- Ensure the DIN rail or panel surface is grounded to provide electrostatic discharge protection across the I/O assembly.
