Precise Switching of Inductive Loads: The PW 161

Pulse width modulation - precise, fast and safe

New in the S-DIAS I/O family is a 16 channel output module for pulse width modulation. The PW 161 is for switching inductive loads such as solenoid valves and relays.

It has 16 digital outputs, which are designed for 1 A and divided into two supply groups with 8 channels each. A supply voltage of up to 48 V DC can be applied to the coils.

The user can set separate PWM ratios for the pick-up and holding phase. Per supply group, a current measuring function is implemented with which characteristic curves of the loads can be determined. For exact control of inductive loads, fast switch-off electronics are integrated into the module. Short-circuit, over current and over temperature monitoring also ensure safe operation.

The PW 161 has – as all modules of the S-DIAS series – compact dimensions of only 12.5 x 104 x 72 mm. The system communicates with a speed of 100 Mbit/s via the real-time Ethernet bus VARAN.

Project development and programming are also user-friendly with the object-oriented engineering suite LASAL. For simple schematic integration, an EPLAN macro is available.


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