Yokogawa Motor YS1700 Programmable Indicator Controller

Note: Some analog inputs can be changed to 4-20mA through parameter settings, and DI/DO terminals can be specified as input or output functions through parameters.

Core functions and technical features

1. Display and operation functions

High visibility display: using a 120 × 320 pixel full dot matrix TFT color LCD, supporting backlight brightness adjustment and off, even in direct sunlight in the morning and evening, it is still clearly visible; Provide multiple display modes such as dashboard, trend chart, bar chart, alarm, event, etc., which can be quickly switched through panel buttons.

Flexible data display: The tag number can display up to 12 characters, PV (process value) and SV (set value) can display up to 7 digits (including decimal point and symbol), and MV (operation value) can display up to 6 digits; The trend chart supports three types of variables (such as PV1/SV1/MV1), with a time span of 1.5 minutes to 45 hours, and can hide/display a single curve.

Convenient manual operation: The panel is equipped with SV/MV increase and decrease buttons, supporting FAST mode (MV adjustment speed 4 seconds/full range, normal mode 40 seconds/full range); When there is a malfunction, it automatically switches to FAIL display, and the hard manual wheel can adjust the output urgently.

2. Control mode and computing power

Dual control mode:

Programmable mode: Requires YSS1000 configuration software, supports basic control (BSC1/BSC2), cascade control (CSC), selector control (SSC) modules, and can freely combine control and calculation modules.

Function selection mode: No programming required, select commonly used functions (single loop, cascade, selector control) directly, and I/O functions are allocated through parameters.

Rich control types: Supports four control types: PID, PD, sample and hold PI, and batch PID. PID parameters (proportional range 0.1-999.9%, integration time 1-9999 seconds, differentiation time 0-9999 seconds) can be flexibly set, and additional functions such as self-tuning (STC), nonlinear PID, and output limitation can be added.

High precision calculation: using IEEE754 format 4-byte floating-point operation, supporting over 100 calculation modules such as exponential, logarithmic, temperature/pressure compensation, etc., to ensure data processing accuracy.

3. Programming and debugging skills

Dual programming mode:

Text programming: Program capacity of 1000 steps (main program+subroutines, subroutines can be reused), supporting logical operations, conditional judgments, jumps, and other instructions.

Function block programming: Based on GUI interface, with a program capacity of 400 modules, supporting online monitoring and testing operation, reducing programming barriers.

Online debugging: Through YSS1000 software, program testing, I/O signal simulation (up to 50 steps of simulation program), and functional block status monitoring can be achieved for easy troubleshooting and parameter optimization.

Data storage: Provides 30 P-parameter variables, 100 K-parameter constants, and 60 temporary data registers to meet the data storage needs of complex programs.

4. Communication function

Support multi protocol communication and adapt to different industrial control systems, with specific parameters as follows:

Key parameters of communication type interface/protocol applicable scenarios

RS-485 PC Link, Modbus RTU/ASCII, YS protocol, point-to-point communication connection PLC, PC or multiple YS1700 devices can be networked up to 32 devices, with a maximum communication distance of 1200 meters

Ethernet Modbus/TCP (basic type only) connection DCS/PLC, supports remote configuration and monitoring 10BASE-T/100BASE-TX, RJ45 interface, distance of 100 meters

DCS-LCS communication Yokogawa dedicated protocol connects up to 8 devices per LCS card in Yokogawa CENTUM CS 3000 and other DCS systems, with a communication distance of 100 meters

Programmer communication RS-232C (dedicated interface) downloads/uploads programs and parameters through YSS1000 software using a dedicated USB-RS232C cable, with a distance of approximately 2.7 meters

Host control mode: Supports DDC (direct control MV) and SPC (control SV) modes, and can automatically switch to manual (MAN) or automatic (AUT) backup mode when communication is interrupted.

Wiring cost optimization: Modbus multi station output supports 32 devices sharing one communication cable, reducing wiring workload.

5. Alarm and self diagnosis

Alarm function: Supports PV high and low limit/high and high limit/low and low limit alarms, deviation alarms, and rate alarms. The alarm threshold (-6.3-106.3%) and hysteresis (0.1-20.0%) can be set; When an alarm is triggered, the ALM yellow light will light up, the tag number will be displayed in reverse, and the event message can be stored and traced back on the ALARM interface (up to 5 messages).

Self diagnosis: It can detect hardware faults such as CPU failure, A/D/D/A conversion errors, memory errors, etc. When there is a fault, the FAIL red light will light up, the analog output will maintain the current value, the DO signal will be locked, and the hard manual function will be enabled.