The 1756-LSP is part of the 5570 GuardLogix Programmable Automation Controller (PAC).
This module is a safety partner module which acts as a co-processor for safety functions.
It is a chassis-based module with integrated memory that corresponds to the memory
of the installed primary control. This memory may be a 1MB-3.75MB safety memory.
It is installed beside the primary controller and draws current from the backplane
amounting to 1200 milliamperes @ 5.1 Volts DC and 14 milliamperes @ 24 Volts DC.
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