1756-PLS Allen-Bradley Programmable Limit Switch Module

1756-PLS ControlLogix Programmable Limit Switch Module

Technical Specifications

• Brand & Model: Allen‑Bradley 1756-PLS.
• Module Type: Programmable Limit Switch with 16 inputs and 16 outputs.
• Operation Modes: Uses 3 contiguous slots in the ControlLogix chassis.
• Backplane Current: 1000 mA at 5V DC; 125 mA at 24V DC.
• Power Dissipation (Max): 25.7 Watts at 30 °C, 21.3 Watts at 60 °C.
• Output Ratings: 10–31.2V DC, 1A max per output (4 groups of 4 with separate power/common).
• Input Type: 16 single‑ended inputs, 10–31.2V DC (4 groups of 4 with separate commons).
• Removable Terminal Blocks: Includes three RTBs – 1756-TBSH or 1756-TBNH.
• Dimensions: 5.51 x 4.41 x 5.71 inches (140 x 112 x 145 mm).
• Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F).
• Storage Temperature: -45 °C to 60 °C.
• Humidity (Non‑condensing): 0–95% relative humidity.
• Off‑state Voltage (Max): 5V DC; Off‑state current max 1.5 mA.
• On‑state Current: 3–10 mA.
• Thermal Dissipation: 6.35 BTU/hr at nominal DC voltage; 9.56 BTU/hr at max DC voltage.

Frequently Asked Questions (FAQ)

• Q: Is the 1756-PLS brand new and original?
  A: Yes, we supply 100% genuine new Allen‑Bradley 1756-PLS modules. No counterfeits or used units.
• Q: What is the output current per channel?
  A: Each output provides 1A max at 10–31.2V DC with 4 isolated groups.
• Q: Can I use this module without a resolver?
  A: The 1756-PLS requires a resolver input to monitor machine position and trigger limits.
• Q: Do you have stock for immediate shipping?
  A: Yes, we maintain abundant stock of the 1756-PLS module. Orders ship within 5 days.
• Q: Which terminal blocks does the module include?
  A: It includes three RTBs – 1756-TBSH or 1756-TBNH (depending on variant).
• Q: What is the return policy?
  A: We support 30-day returns for unused modules in original condition.
• Q: What is the maximum operating temperature?
  A: The module operates from 0 °C to 60 °C (32 °F to 140 °F).
• Q: Can I remove the module while the chassis is powered?
  A: No, removing under power may cause configuration loss or data errors. Always power down first.

For any inquiries or volume orders, please contact us:

• Email: sales@nex-auto.com
• WhatsApp: +86 153 9242 9628

Partner: NexAuto Technology Limited