Allen-Bradley 1440-TB-A Terminal Base Unit
Configured for physical module housing and field wiring termination in Allen-Bradley XM measurement systems, the Allen-Bradley 1440-TB-A (1440-TB-A Terminal Base) provides direct physical/electrical execution. It serves as the dedicated mounting base for the XM-12 Dynamic Eccentricity Measurement Module, establishing backplane signal buses and power routing via heavy-duty screw clamp terminals. The unit mounts directly to standard 35 mm DIN rails, providing a modular socket that allows module insertion and removal without disturbing field wiring.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1440-TB-A |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 2.31 lbs (1.05 kg) |
| Dimensions | Standard XM Series Terminal Base Dimensions |
| Operating Temp | -20 to 65 deg C |
| Power Consumption | Passive Termination Base Assembly |
| Terminal Type | Screw Clamp Terminals |
| Module Compatibility | XM-12 Dynamic Eccentricity Measurement Module |
| Mounting Method | 35 mm DIN Rail Mounting |
| System Line | Allen-Bradley XM Dynamic Measurement Series |
Backplane Bus & Deterministic Communications
The 1440-TB-A forms the structural and electrical backbone for the XM-12 dynamic measurement module. Integrated side-connector buses pass power, system diagnostics, and high-speed network traffic between adjacent XM terminal bases without external jumper wiring. Shielded backplane traces preserve signal integrity for sensitive dynamic eccentricity inputs, maintaining backplane bus communication velocity and preventing high-frequency noise injection into the measurement circuitry.
Frequently Asked Questions
Q: Does replacing an XM-12 module require disconnecting the field wiring on the 1440-TB-A?
A: No, the 1440-TB-A terminal base holds all screw clamp field terminations permanently. The XM-12 processing module plugs directly into the base and can be removed without touching field wiring harness connections.
Q: Can the 1440-TB-A base be used with other Allen-Bradley XM series modules besides the XM-12?
A: The 1440-TB-A is specifically keyed and pin-mapped for the XM-12 Dynamic Eccentricity Measurement Module to ensure correct terminal alignment and prevent incorrect module insertion.
Field Installation Guidelines
- Power Isolation: Ensure main 24 VDC supply power and field circuit voltage sources are de-energized prior to mounting or wiring the terminal base.
- DIN Rail Mounting: Snap the 1440-TB-A securely onto a 35 mm DIN rail, verifying that the metal DIN rail latch fully engages for positive earth grounding.
- Inter-Base Connection: Slide adjacent XM terminal bases together on the DIN rail to engage the side-locking backplane connectors for continuous power and bus routing.
- Field Wiring Termination: Strip conductor ends to recommended length and insert into the screw clamp terminals. Tighten terminal screws to specified torque ratings to prevent loose contacts.
- Shield Grounding: Connect field transducer cable shields to the designated base shield terminals, ensuring single-point grounding to avoid ground loops.
Allen-Bradley 1440-TB-A Terminal Base Unit
Allen-Bradley 1440-TB-A Terminal Base Unit
Configured for physical module housing and field wiring termination in Allen-Bradley XM measurement systems, the Allen-Bradley 1440-TB-A (1440-TB-A Terminal Base) provides direct physical/electrical execution. It serves as the dedicated mounting base for the XM-12 Dynamic Eccentricity Measurement Module, establishing backplane signal buses and power routing via heavy-duty screw clamp terminals. The unit mounts directly to standard 35 mm DIN rails, providing a modular socket that allows module insertion and removal without disturbing field wiring.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1440-TB-A |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 2.31 lbs (1.05 kg) |
| Dimensions | Standard XM Series Terminal Base Dimensions |
| Operating Temp | -20 to 65 deg C |
| Power Consumption | Passive Termination Base Assembly |
| Terminal Type | Screw Clamp Terminals |
| Module Compatibility | XM-12 Dynamic Eccentricity Measurement Module |
| Mounting Method | 35 mm DIN Rail Mounting |
| System Line | Allen-Bradley XM Dynamic Measurement Series |
Backplane Bus & Deterministic Communications
The 1440-TB-A forms the structural and electrical backbone for the XM-12 dynamic measurement module. Integrated side-connector buses pass power, system diagnostics, and high-speed network traffic between adjacent XM terminal bases without external jumper wiring. Shielded backplane traces preserve signal integrity for sensitive dynamic eccentricity inputs, maintaining backplane bus communication velocity and preventing high-frequency noise injection into the measurement circuitry.
Frequently Asked Questions
Q: Does replacing an XM-12 module require disconnecting the field wiring on the 1440-TB-A?
A: No, the 1440-TB-A terminal base holds all screw clamp field terminations permanently. The XM-12 processing module plugs directly into the base and can be removed without touching field wiring harness connections.
Q: Can the 1440-TB-A base be used with other Allen-Bradley XM series modules besides the XM-12?
A: The 1440-TB-A is specifically keyed and pin-mapped for the XM-12 Dynamic Eccentricity Measurement Module to ensure correct terminal alignment and prevent incorrect module insertion.
Field Installation Guidelines
- Power Isolation: Ensure main 24 VDC supply power and field circuit voltage sources are de-energized prior to mounting or wiring the terminal base.
- DIN Rail Mounting: Snap the 1440-TB-A securely onto a 35 mm DIN rail, verifying that the metal DIN rail latch fully engages for positive earth grounding.
- Inter-Base Connection: Slide adjacent XM terminal bases together on the DIN rail to engage the side-locking backplane connectors for continuous power and bus routing.
- Field Wiring Termination: Strip conductor ends to recommended length and insert into the screw clamp terminals. Tighten terminal screws to specified torque ratings to prevent loose contacts.
- Shield Grounding: Connect field transducer cable shields to the designated base shield terminals, ensuring single-point grounding to avoid ground loops.
