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Parallel remote sensing
Remote sensing can be used as normal with paralleled modules. The sense lines (S+ and S-) from each of the output modules
should be connected together, S+ to S+, and S- to S- as shown below. This should be done close to the power supply output
and a single pair of cables brought from these sense lines to the load. Keeping cable lengths to a minimum and using twisted
pairs where necessary will help reduce noise pickup in the sense lines.
N+1 configurations
When using N+1 redundant configurations, a suitably rated diode (or controlled MOSFET) must be used on each output to
prevent a device failure from causing a system failure. However, the diode introduces voltage drops between the supply and
the load that significantly degrade the load regulation. To counteract this, the remote sense lines should be used to regulate
the voltage at the load as shown below.
Typically this configuration can damage the internal sense resistors used within a power supply. However, the RCB/MCB
outputs have integrated protection to prevent this type of damage and are completely N+1 compatible without any additional
external protection circuitry. Note that only the positive sense terminal is protected and diodes should be used in the positive
connection only.