Teracom TCW280, Руководство пользователя

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TCW280_R1.2 – February 2019 Page 6
The output schematic is as follows:
Analog inputs can be used to direct control of devices with voltage or current loop inputs –
electronic valve actuators, motor inverters, etc.
5.3.3. Open drain outputs
TCW280 has four isolated open drains (digital) outputs. Every digital output can be programmed
to work either in ON/OFF or PWM (Pulse-width modulation) mode.
In PWM mode a few frequencies are supported. The working frequency of PWM has to be higher
than the effect which is expected in the load. Every output can be set on a different Pulse-width,
but the frequency is the same for all outputs in this in this mode.
PWM is an easy way to have an analog control through a digital signal. The duty cycle of the PWM
corresponds to the average value of voltage fed to the load.