I. Product Overview LY-400 PID control paperless recorder. 4 universal input, you can enter the standard current, standard voltage, thermocouple, RTD, mV and other signals, two analog outputs, 8 relay outputs, two-loop PID control, two-way transmission output. Two, PID control paperless recorder Features ◆ 5.4 英寸 dot matrix LCD graphics display, LED backlight, the screen is rich, informative, intuitive and easy to operate; ◆ high-speed, high-performance microprocessors, enabling simultaneous four-way signal detect, record, display and alarm, two-loop PID operation; ◆ control paperless recorder with large capacity FLASH memory chips store historical data, power-down and never lost data; ◆ fully isolated universal input, you can enter a variety of signals, no replacement of hardware, software configuration can; ◆ Chinese menu configuration, software locks to ensure the safety of the user configuration; ◆ alarm display, while indicating separate ways the next lower channel, lower, upper, upper limit alarm; ◆ standard serial Communication Interface: RS-485 and RS-232C; ◆ open standard Modbus protocol. In addition to supporting the company's PG2000 real-time monitoring software, also supports iFIX, Kingview, DYGS other popular professional configuration software. ◆ Integrated hardware real-time clock, power-down situations to run the clock can be accurately; ◆ new switching power supply, work within the scope of 85VAC ~ 265VAC; ◆ provide Transmitter + 24VDC isolated power distribution. Three, LY-400PID control paperless recorder Main Specifications Display: 160 × 128 dot-matrix graphic LCD display, LED backlight basic error: ± 0.2% FS Input Specifications: fully isolated universal input: 1-4 channel signal input, channel wholly isolated, isolation voltage 400V. Output Specification Distribution: 4 distribution, two groups 24VDC output, the output current of 100mA / group two analog outputs: PID regulator output or transmission output, 4-20mADC; load resistance <600 Ω eight configurable relay contact output , contact capacity 3A, 250VAC (resistive load) default to normally open contact.