Products Description

The Allen-Bradley 1753-L32BBBM-8A is a Safety Controller from GuardPLC 1800 series. This controller has the most I/O points among GuardPLC controllers. It is equipped with 32 I/O points (24 inputs and 8 outputs, none of which are electrically isolated). Output channels 4 and 8 can withstand 1 Amp of current at 60 degrees Celsius and the other channels are 0.5 Amps rated. The 1753-L32BBBM-8A controller also has 2 (not electrically isolated) high-speed counters with a 24-bit resolution. There are 250 KB of user program memory and 250 KB of application data memory installed to support microprocessor in fault processing. This device will detect a fault in their controlling system behavior and put all affected inputs and outputs from the faulty module to the safety state.
Performance specifications
| Manufacturer | Allen Bradley |
| Product Type | Safety Controller |
| Product Line | GuardPLC |
| Part Number | 1753-L32BBBM-8A |
| Weight | 32.00 lbs (14.51 kg) |
| Product Series | GuardPLC 1800 |
| User Memory | 250 KB user program memory |
| Digital Inputs | 24 |
| Operating Voltage | 24V DC |
| On-state Voltage | 15V 30V DC |
| On-state Current | 3.5 mA at 24V DC |
| Outputs | 8 |
| Output Voltage Range | ? L+ minus 2V |
| Output Current | 0.5-1 A |
| Counters | 2 |
| Inputs per Counter | 3 |
| Counter Resolution | 24 bit |
| Analog Inputs | 8 |
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Application Areas

- Automotive Manufacturing: Safety control for automotive welding production lines. 32-point integrated I/O connects the welding robot's emergency stop button, safety light curtain, and protective door. When a person enters the danger zone, the robot's power supply is shut off within 0.5ms, preventing injuries from welding sparks.
- Food Packaging: Safety protection for high-speed packaging machines. Extended safety I/O modules monitor cutter position and conveyor belt emergency stop signals. Safety logic controls the cutter's emergency brake, with a braking response time of ≤2ms, preventing equipment damage or personal injury from material jams.
- Logistics and Warehousing: Safety control for automated warehouse stacker cranes. Dual Gigabit Ethernet ring network redundancy ensures stable communication. Monitoring stacker crane lift limits and travel track safety gates ensures immediate shutdown when safety limits are exceeded, protecting goods and equipment.
- Pharmaceutical Industry: Safety system for aseptic filling production lines. Compliant with GMP certification requirements, the system maintains a safety event log with traceability of at least one year. CIP Safety communicates with the DCS system for simultaneous monitoring of safety status and production data.
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