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PS-400G Series User Manual
2 RAS Function
2.1 Overview
RAS, which stands for Reliability, Availability, and Serviceability, is a device-level monitoring
function that provides a variety of features to improve the reliability of your PS-G system.
Though the standard set of RAS features used will vary depending on the devices used, the
following features are used to provide Alarm Monitoring and External Input Signal support.
Also, when either the one of the above mentioned alarm occurs, or an external signal input is
received, the following types of alarm processing output signals and features are supported.
Additionally, each of the above items and signals can either be enabled or disabled, or perform a
variety of alarm processing using the RAS Control on the PS-G unit’s Control Panel. Refer to
“Chapter 3 2.2 Control Panel Settings”.
There is also an Application Interface Library (API-DLL) available which allows RAS functions
to be used by other applications. For more information, refer to the “PS Series Type G Application
Development Kit (ADK) Developer Manual”.
*1 Standard Signal Input will latch Input Information.
*2 The remote reset feature’s input can be either enabled or disabled, however, the alarm output
setting cannot be set to trigger a forced system reset.
Alarm Monitoring
Watchdog Timer Time-up
External Input Signal
Standard Signal Input *1 (DIN 2-bit)
Remote Reset Input *2
External Output Signal
Standard Signal Output (DOUT 1-bit)
Alarm Output (single lamp)
Various Processing Functions
LED indicator (3 colors at 1 point)
Pop-up Message Output
Buzzer Output
System Reset
