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Power Supplies
Power Supply Modules
The power supply modules are used in 1771 Universal I/O chassis to provide 5V DC power directly to the chassis backplane. These power supplies occupy one or two slots and can provide up to 8 A per supply to the I/O chassis. Power supply modules can be paralleled to provide up to 20 A per chassis @ 60 °C (or up to 24 A per chassis at 55 °C). Refer to the power supply selection chart for compatibility information.
Benefits
- Require no space outside the I/O chassis.
- Connect directly to the I/O chassis backplane.
- Contain output-power indicators that indicate if 5V DC is being supplied to the backplane.
- Can be paralleled (using 1771-CT cable) to provide up to 16 A of current per chassis (1771-P4S, -P6S, -P4S1, -P6S1).
- Single failure-proof chassis power of up to 20 A of current per chassis using redundant configurations (1771-P4R, -P6R).
Typical Configurations
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