ACT20X digital isolators are newly introduced as specifically designed for hazardous area applications. The intrinsic safety signal conditioners include modules that can convert and isolate digital signals to and from hazardous areas, as well as versions that isolate and drive digital actuators. ACT20X includes pulse isolator or actuator driver digital modules. Pulse isolators accept digital inputs from field equipment within a hazardous area. These include Namur and relay status and frequency signals from flow, pressure, or level switches and proximity sensors for position or motor speed measurements. They create isolated outputs for safe area controls. Actuator drivers isolate a controller’s digital outputs and drive solenoids, actuators, and alarm devices in hazardous areas. The limiting value of actuator current produced by the module depends on hazardous zone classification, it’s noted. Each ACT20X module features an independent error alarm output for monitoring input signals and internal electronics. A dedicated, volt-free contact registers open/short circuits or internal errors for quick problem identification. The 22.5-mm-wide devices are part of this manufacturer’s wide range of isolators and converters for process applications in hazardous areas.
Weidmuller, Richmond VA
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