High Quality Allen Bradley ControlLogix 1756-L55M22 Module

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Introduction

The Allen-Bradley 1756-PLS ControlLogix Programmable Limit Switch is a module that can monitor machine position through the resolver, activate the actuator at various limits, and switch the Low Limit and High Limit setpoint positions. The 1756-PLS module energizes and de-energizes outputs for industrial applications. This module has 16 output currents at 10 - 31.2V DC with a maximum of 1A per output (4 groups of 4 outputs with separate power and common). The 1756-PLS also has 16 single-ended inputs 10-31.2V DC (4 groups of 4 inputs with separate commons). This module is installed in a ControlLogix chassis. It also uses a Removable Terminal Block (RTB) to connect all the field-side cables. Removing the PLS module from the chassis when the power is applied causes the message commands to commit configuration, input data, and output errors. Deletion may also cause the module to lose its previous configuration.  When inserting or removing a module while the backplane power is on, an electri c arc can occur.

The Allen-Bradley 1756-PLS has an operating temperature of 0 - 60°C (32° - 140°F) at nominal DC I/O voltage. The operating humidity is 0-95% noncondensing and the thermal dissipation is 6.35 BTU/hr at the nominal DC voltage and 9.56 BTU/hr at the maximum DC voltage. The maximum off-state voltage of the 1756-PLS module is 5V DC. The maximum off-stage current is 1.5 Ma and the maximum on-stage current is 3-10 mA.

Allen Bradley Main Products:

1. SLC500:1747/1746 series
2.MicroLogix: 1761/1763/1762/1766/1764 series
3.CompactLogix: 1769/1768 series
4. The ControlLogix: 1756/1794/1760/1788 series
5. PLC-5:1771/1785 series
6.2711,2711P PanelView man-machine interface, touch screen, operation panel
7.22A,22B, 20 small frequency converter,150 soft starter
8. ProSoft: MVI69 / PS69 / MVI56 / MVI94 / MVI71 / MVI46/3150 9. ICS TRIPLEX: T8431 / T8461 / T3401 / T8310

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Advantage Products

①Allen-Bradley(USA AB)Series

②Schneider(Schneider Electric)Series

③General electric(General Electric)Series

④Westinghouse Series

⑤SIEMENS Series

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⑦Westinghouse: OVATION System、WDPF System、MAX1000 system spare parts.

Conversion、I/O Signal processing、Data communication systems?Digital-to-Analogue

⑧Invensys Foxboro I/A Series system，FBM（I/O）SCS、Trapezoidal logic control、Accident recalling、DAC

Invensys Triconex: Redundant fault-tolerant control system、Most modern fault-tolerant controller based on Triple Modular Redundancy (TMR) architecture.

⑨Siemens：Siemens MOORE，?Siemens Simatic C1，Siemens CNC system.

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