System overview
4.6 Input and output modules
Automation system
74 System Manual, 01/2023, A5E03461182-AK
Digital output modules (UC, AC)
Short designation DQ 16x24
…48VUC/
DQ 8x230VAC/5A
ST relay
DQ
16x230VAC/2A ST
DQ 8x230VAC/2A
ST Triac
DQ
16x230VAC/1A ST
Electrical isolation
X X X X X
Number of poten-
1 16 8 8 8
Relay coil supply
voltage
age
125 V DC /
24 V AC to
120 V DC /
24 V AC to
120 V DC /
24 V AC to
Benefits
The digital output modules provide you with the following advantages:
• High channel density with low variety of parts, therefore less effort for ordering, logistics
and storage of spare parts
• Modules in 25 mm size without parameter assignment and diagnostics, therefore simple
commissioning
• Front connector in screw-type connection system or in push-in system (35 mm width) or
push-in system for 25 mm modules
• Same mechanical design, same handling and same accessories for all modules
• Same pin assignment for wiring, which means that circuit diagrams and wiring plans can
be universally used
• Any combination of narrow and wide modules
• Can be used centrally in SIMATIC S7-1500 and in ET 200MP distributed I/O system
• High feature module DQ 8x24VDC/2A HF: You can use pulse width modulation (PWM) to
easily generate periodic pulses with a constant rated voltage and a variable pulse
duration.
Typical use:
– Control of proportional valves and way values (e.g. energy saving by reducing the
holding current).
– Heating control e.g. via an external additional power unit.
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