Slew Rate
The SlewRate function limits the slope with which the next setpoint is output electrically by the terminal. This serves, for example, to protect the connected signal sink or ultimately a mechanical load.
Parameter:
Index | Designation |
|---|---|
80nD:1E | Output Slew Rate [s] |
Result:
If the setpoint specification causes a higher electrical signal slope than permitted, the channel automatically reduces the setpoint change per internal cycle to the specified level. The value applies to positive and negative changes and is unsigned. The slope of the ramp must be specified in [sec] in relation to AEWnom. If, for example, a maximum permitted slope of ±2 V/s at AEWnom = 10 V is required, this results in an Output Slew Rate of 5 s. By default, the Slew Rate is unlimited (0).
The intermediate value after this functional unit can be viewed in x90n0:08.
Example: A rectangular output of 1 V / 6 V from the PLC is converted to a triangular output by "Output Slew Rate" = 1 s (corresponds to 10 V/s):
