Products Husky I/O Subsystem
To interface the RTU with field equipment for data acquisition and control, different I/O modules are provided based on the functions required. Salient features of the system include –
- Onboard 16-bit microcontroller with clock
- Optical/Galvanic isolation between field inputs and system
- Dual redundant high-speed communication bus
- Fault diagnostics
Single-ended and double-ended positive logic digital inputs modules in different input densities are available for sensing field equipment contacts. Various voltage options (24VDC, 48VDC, 110VDC) are available for different applications. By utilizing the presence of an onboard microcontroller, all input status changes are recorded with true 1ms resolution timestamps before transfer to CPU.
The digital output modules provide control facility for operating field equipment. Relay-based 24VDC output modules are available which can be used for pulsed and latched output types.
Select-before-Operate (SBO) scheme is built into the output module for systems requiring output control security. Individual channel select status is confirmed prior to execution of command.
RTU 6049-E70 has support for both AC and DC analog inputs. In case of AC inputs, AC voltages can be measured after suitable signal conditioning. For DC inputs, both bipolar and unipolar voltage/current inputs are available.
The DC analog input module has a built-in precision reference using which the onboard microcontroller performs automatic calibration of the input channels.
The DC Analog Output modules are designed to provide current or voltage output as required. The output ranges supported include:
- 4 to +20 mA
- 0 to +10 VDC
- -10 to +10 VDC
The card is designed with a precision 12-bit DAC along with precision voltage references and precision resistors to achieve the accuracy of 0.1%. The card provides both voltage and current output simultaneously to allow the application to use any of the output as per requirement.