Siemens SINAMICS S120 Function Manual page 185

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Example 2: monitoring the pressure

The pressure as process variable is to be monitored, whereby a temporary overpressure is

tolerated. For this, the output signal of an external sensor is connected with the variable

signaling function. The pressure thresholds and a pull-in delay are set as tolerance time. When

the output signal of the variable signaling function is set, bit 5 in message word MELDW is set

during cyclic communication. The message word MELDW is a component of the telegrams

102, 103, 105, 106, 110, 111, 116, 118, 126.

Function diagrams (see SINAMICS S120/S150 List Manual)

Overview of important parameters (see SINAMICS S120/S150 List Manual)

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Diagram: Variable signaling function

Servo control - variable signaling function

Variable signaling function, start

CI: Variable signaling function signal source

BO: Variable signaling function, output signal

Variable signaling function, threshold value

Variable signaling function, hysteresis

Variable signaling function, pickup delay

Variable signaling function, dropout delay

Variable signaling function, sampling time

Servo control

5.21 Variable signaling function