Allen-Bradley 1756-L7SPK GuardLogix Safety Partner Processor
Introduction:
The 1756-L7SPK is a GuardLogix safety partner processor from Allen-Bradley. It requires one partner per GuardLogix L7 controller and features conformal coating for harsh environments.
Customer Reviews
UBEST Automation – Trusted Global Automation Parts Supplier
We offer a wide range of in-stock industrial automation spare parts. All products come with a 12-month warranty and a 30-day refund for quality issues.
Product Attributes:
Notice: For real-time prices and inventory, please click the button below to contact us.
Product Overview
The Allen-Bradley 1756-L7SPK is a GuardLogix safety partner processor. It belongs to the ControlLogix series of programmable automation controllers. This module works alongside a primary GuardLogix L7 controller to provide safety control functionality.
One safety partner processor is required for each GuardLogix L7 controller. Furthermore, the module features conformal coating for enhanced environmental protection. Therefore, it suits applications requiring high-reliability safety control.
General Specifications
The 1756-L7SPK offers dedicated safety partner functionality for GuardLogix systems.
Manufacturer: Rockwell Automation.
Brand: Allen-Bradley.
Series: ControlLogix (GuardLogix).
Part Number/Catalog No.: 1756-L7SPK.
Module Type: GuardLogix Controller (Safety Partner Processor).
Enclosure: None (Open-Style).
Special Feature: Conformally coated.
Memory and I/O Capacity
The 1756-L7SPK has specific memory and I/O specifications.
I/O Memory: N/A (partner processor, not primary).
User Memory: N/A.
Maximum I/O: N/A.
Maximum Analog I/O: N/A.
Maximum Digital I/O: N/A.
This module serves as a safety partner and does not independently store user programs or control I/O. Therefore, it must be paired with a primary GuardLogix L7 controller.
Power and Current Draw
The 1756-L7SPK draws minimal power from the ControlLogix backplane.
Current Draw (1.2 Volts DC): 5 milliamps.
Current Draw (5.1 Volts): 802 milliamps.
Power Dissipation: 2.5 Watts.
Thermal Dissipation: 8.5 BTU per hour.
Isolation Voltage: 30 Volts Continuous.
Key Features
The 1756-L7SPK offers several advantages for safety control applications.
Safety Partner Function:
Works as a redundant safety partner to a primary GuardLogix L7 controller. Therefore, it provides the necessary redundancy for SIL 3 safety applications.
Conformal Coating:
The module is conformally coated for enhanced protection. Consequently, it resists moisture, dust, and chemical contamination in harsh environments.
Required for GuardLogix L7 Systems:
One safety partner processor is required for each GuardLogix L7 controller. Hence, it is an essential component for safety-certified systems.
Low Power Consumption:
Draws only 2.5 Watts typical. For this reason, it adds minimal load to the chassis power supply.
Open-Style Enclosure:
Requires installation in a protected panel or enclosure. Thus, it is suitable for UL/cUL listed industrial control panels.
ControlLogix Platform Integration:
Mounts in standard ControlLogix chassis. Consequently, it integrates seamlessly with other ControlLogix I/O and communication modules.
Typical Applications
The 1756-L7SPK suits various safety control applications.
Safety-rated machine control systems (SIL 3).
Emergency stop monitoring and response.
Safety interlock and guard monitoring.
Redundant safety controller configurations.
Applications requiring conformal coating for harsh environments.
Installation Guidelines
Install the 1756-L7SPK in any available slot of a ControlLogix chassis alongside a primary GuardLogix L7 controller. First, ensure the chassis power supply can provide the required current (802 mA at 5.1V and 5 mA at 1.2V). Then, insert the module into an available slot.
The conformal coating protects the module from moisture and contaminants. However, the open-style enclosure still requires installation within a protected panel or cabinet. The safety partner processor works in tandem with the primary L7 controller to achieve safety certification.
What is in the Box
Please inspect all items upon delivery.
Allen-Bradley 1756-L7SPK GuardLogix safety partner processor.
Installation instruction manual.
Anti-static protective bag.
Frequently Asked Questions (FAQ)
1. What is the purpose of the 1756-L7SPK safety partner processor?
The 1756-L7SPK is a safety partner processor for GuardLogix L7 systems. One partner is required for each primary GuardLogix L7 controller to achieve safety certification.
2. Does this module have user memory for control programs?
No. The 1756-L7SPK does not have user memory or I/O memory. It serves as a safety partner and must be paired with a primary GuardLogix L7 controller.
3. What is the power dissipation of this module?
The 1756-L7SPK dissipates 2.5 Watts of power. Thermal dissipation is 8.5 BTU per hour.
4. What is the conformal coating on this module?
Conformal coating is a protective chemical layer applied to the circuit board. Therefore, the 1756-L7SPK resists moisture, dust, and chemical contamination in harsh environments.
5. How many safety partner processors are needed per GuardLogix L7 system?
One 1756-L7SPK is required for each GuardLogix L7 controller. Hence, a complete safety system includes one primary L7 processor and one L7SPK safety partner.