Siemens 7SR210 Argus Manual page 4

Programmable User Logic
The user can map Binary Inputs and Protection operated
outputs to Function Inhibits, Logic Inputs, LEDs and/or Binary
Outputs.
The user can also enter up to 16 equations defining scheme
logic using standard functions e.g. Timers, AND/OR gates,
Inverters and Counters.
Each Protection element output can be used for Alarm &
Indication and/or tripping.
Circuit Breaker Maintenance
Two circuit breaker operations counters are provided. The
Maintenance Counters record the overall number of opera-
tions and the Delta Counter the number of operations since
the last reset.
An I t summation Counter provides a measure of the contact
2
wear indicating the total energy interrupted by the circuit
breaker contacts.
Each counter has a user set target operations count which,
when reached, can be mapped to raise Alarms/ Binary Out-
puts.
These counters assist with maintenance scheduling
Function LED's
Eight or sixteen user programmable tri-colour LED's are
provided eliminating the need for expensive panel mounted
pilot lights and associated wiring. Each LED can be user set
to red, green or yellow allowing for clear indication of the
associated function's state. A slip-in label pocket along-side
Fig 1. Tri-colour LED's and function keys
enables the user to insert customised notation. A printer
compatible template is available.
Function Keys
Six user programmable function keys are available for
implementing User logic and scheme control functionality,
eliminating the need for expensive panel mounted control
switches and associated wiring. Each function key has an
associated user programmable tri-color LED (red, green,
yellow) allowing for clear indication of the associated
function's state. A slip-in label pocket along-side enables the
user to insert his own notation for the function Key LED
Identification.
Each Function Key can be mapped directly to any of the
built-in Command functions or to the User Logic equations.
Siemens Protection Devices Limited 4