Parameters/Address Space; Normal Operation/Valve Control; Pulse Width Modulation - Siemens SIMATIC ET 200SP Manual

3.2

Parameters/address space

3.2.1

Normal operation/Valve control

Normal operation
"Normal operation" refers to the function of the DQ 4×24VDC/2A HS as digital output
module.
Valve control is a special function of normal operation.
Valve control function
You can use the valve control function to switch to a lower "holding current" after operating
the valve (inrush current). You do this by activating a pulse width modulation (see section
Pulse width modulation (Page 46)).
At a 0 → 1 change of the digital channel, the configured hold time is started. After the hold
time elapses, the pulse duty cycle becomes "modulated upon" in the form of a pulse width
modulation. The actuating signal is output digitally as a pulse train of on and off pulses.
Configuration
You configure valve control with the following parameters:
● "Normal operation" operating mode
● Holding time valve control
● Pulse width modulation duty cycle
● Pulse width modulation time period
Digital output module DQ 4x24VDC/2A HS (6ES7132-6BD20-0DA0)
Manual, 06/2018, A5E32855695-AC
DQ operating mode DQ (valve control)
3.2 Parameters/address space
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