﻿The "PWM cycle time" parameter specifies the switching frequency of the pulse-width-modulated output signal of the valve output. It allows adaptation to the adjusting cycle times (the adjusting time it takes the drive to bring the valve from its completely closed to its completely opened position) of the valve drives used. In addition to the adjusting cycle time, take account of the dead time (the time in which the actuators do not show any response when being switched or off). If different actuators with different adjusting cycle times are used at an output, take account of the longest of the times.

The "PWM cycle time" parameter is also available, when the command value data format is configured to "Switching (1-bit)" or "Constant (1-byte) with command value limiting value". For such valve outputs, pulse width modulation can also be executed during an active forced position, emergency operation, after voltage return or after an ETS programming operation, for which, as a result, the presetting of a cycle time is required.
