Description
overviews
ALK-XMDA series intelligent multi-point circuit display and regulation instrument has strong operation, comparison, execution, alarm and other processing capabilities. Using the self-developed integrated circuit, gathered most of the functions of all kinds of regulating instruments in the automatic control system, but also integrated CPU, I/O interface, EPROM and D/A conversion circuit.
Specification
Product application
The hardware of the instrument is greatly reduced, and the composition and structure of the system are relatively simple. Within the scope of user application, a variety of input signals are compatible.
The optimized design is adopted, and the process is significantly improved, with no flying line and no adjusting potentiometer.,Calibration and functional settings can be done by software through the keyboard.
It can be set to four-point control plus 12:00 inspection function. Can be set to a unified point report Or an independent separation newspaper. Function.
Four reports can be set Output, report The method can reach more than ten kinds and can be reported to each newspaper.Points for acousto-optic monitoring, and can be reported Set the silencing delay time.
Input signal types: thermocouple, thermoresistance, linear current, linear voltage.
Number of patrol channels:1: 16. The instrument can display four measured values at the same time.
Can be inspected, fixed check switching, channel display time setting0.1 / 25s optional.
Each channel can be set to be valid separately.
Linear input defines zeros, full values, and decimal places for each path.
Support upper and lower limit reports for each channelThe jing value is independently set and reported to the jing lamp indication; the upper and lower limits are unified relay output or one relay output is shared for every 4 channels.
OptionalThe combination and distribution of four relays.
The average value can be seen, and the average value can be controlled by bit.
Redefinable value report Output (including acousto-optic reports) Output).
It can realize the large value, small value and average value of patrol, and the instantaneous value can be transferred to the output at the same time or separately.
According to the operation function hasB, C, E three groups of menus, in which C menu is convenient and fast.
Multi-host, single-host, no-host modeRS485 asynchronous serial communication mode. Communication data calibration in accordance with CRC-16 data communication standard, high reliability cycle, bar code verification.
Main technical index
Measurement accuracy:±0.5%FS+1 word
Adjust control accuracy: position:±0.5%FS
Alarm function: upper limit, lower limit, upper and lower limit, lower return difference, double cycle difference, etc.
Input impedance:0-10mA: 50 Ω, 4-20mA:250 Ω thermocouple and DCmV: ≥ 10K Ω
Automatic compensation accuracy of cold end:0 ≤ 40 ℃ ±0.3 ℃
Thermal resistance: three-wire inputComplete compensation within 3 × 10 Ω
Relay contact capacity:AC220V 2A
Power supply:AC220V ≤ 6W AC110V DC24V
Working environment requirements: temperature:0-50 ℃, relative humidity: < 85%, non-corrosive gas, no vibration.
