The YS1700 Programmable Indicating Controller can be tailored for various applications by running a user program, and offers high reliability thanks to Yokogawa’s proprietary technology, user friendliness, and expandability. Standard models are smaller and lighter than earlier series, requiring less space for installation, and are compliant with international safety standards including the CE Mark and FM, CSA nonincendive (optional) approvals. For easy replacement of earlier controllers, models requiring the same panel cutout dimensions and depth as those of earlier models are also offered.
GENERAL
The YS1700 Programmable Indicating Controller can be tailored for various applications by running a user program, and offers high reliability thanks to Yokogawa’s proprietary technology, user friendliness, and expandability. Standard models are smaller and lighter than earlier series, requiring less space for installation, and are compliant with international safety standards including the CE Mark and FM, CSA nonincendive (optional) approvals. For easy replacement of earlier controllers, models requiring the same panel cutout dimensions and depth as those of earlier models are also offered.
FEATURES
• Excellent legibility thanks to a full-dot, TFT LCD: High visibility of the display screen is ensured even in direct sunlight in the early morning and late afternoon. The user can freely access a desired operation display from meter, trend display, bar graph, alarm, and event displays. All parameters can be set via the front panel display.
• Function block programming: Besides the text programming compatible with earlier models, the YS1700 offers the new GUI-based programming method, function block programming. The optional YSS1000 Setting Software for YS1000 Series is used to develop user programs.
• Large programming capacity: Program capacity is 1000 steps for a text program, and 400 modules for a function block program.
• More powerful control and calculation functions: IEEE754format four-byte floating-point calculations enable actual values to be used in calculations. More than a hundred types of calculation modules are featured, including exponential and logarithmic functions, temperature compensation, and pressure compensation.
• Function selection mode (needs no programming): The multi-function controller mode allows control to be selected from frequently used functions (single-loop, cascade, or selector control) without programming. Function assignments to digital and analog inputs/outputs (DIs, DOs, AIs, and AOs) can be determined by parameter settings.
• Expandable I/O: The basic type with expandable I/O has eight analog inputs, four analog outputs, ten digital inputs or ten digital outputs (total fourteen digital inputs and outputs).
• Fail-safe: Thanks to dual CPU (one for control and one for display), display and manual operations are enabled even during a failure of either CPU. The hard manual circuit incorporated independently from the digital circuits enables the controller output to be adjusted manually during a failure of a digital circuit including both CPUs. (The hard manual circuit is not incorporated when the suffix code -2xx option is specified.)
• Nonvolatile memory for memory backup: No battery or capacitor is used for memory backup, facilitating maintenance.
• AC/DC dual power supply with wide operating voltage range to ensure stability against supply voltage fluctuations: Can be driven by either an AC (100 V) or DC (24 V) power supply. Furthermore, the DC power supply enables receiving power without polarity. (Must be specified upon ordering if using a 220 V AC power supply.)
• 250 mm depth (for basic types only)
• Dust- and splash-proof IP54 faceplate (for basic type only)
• CE Mark (for basic type and YS100 compliant type only)
• FM Nonincendive explosion protection (optional for basic type only)
• CSA Nonincendive explosion protection (optional for basic type).
• Communication (optional)
- Ethernet (Modbus/TCP; for basic type only)
- RS485 (PC Link, Modbus, Peer-to-Peer communication, and YS protocol; unavailable for YS80 internal unit-compatible type)
- DCS-LCS communication
• Compatibility with YS100 Series: Setting and control operations can be done with the same feel. For basic-type cases, terminal-to-terminal pitches differ but the signal-to-terminal arrangement is almost the same.

Hardware specification parameters
Power supply and physical characteristics
Power type: AC/DC dual power drive (default 100V AC/24V DC), 220V AC single power drive (specified when ordering)
Physical dimensions: Basic type 144 × 72 × 250mm (H × W × D), weight 1.6kg; with expansion I/O type main unit and expansion cable, total weight approximately 1.92kg
Protection level: Basic front panel IP54 (dustproof and splash proof)
Installation requirements: Panel installation, panel thickness 2.3-25mm, single installation opening 137+2 × 68+0.7mm, parallel installation needs to adjust the opening width according to the quantity (2 units 140mm, 3 units 212mm, etc.)
I/O interface configuration | Interface type | Basic type (YS1700-x0x) | Scalable I/O type (YS1700-x1x) | Compatible type (YS100/YS80, etc.)|
|Analog input (1-5V/4-20mA) | 5 channels (1 channel can be changed to 4-20mA through parameters) | 8 channels | 5 channels (some models have 4 channels)|
|Analog output | 2 channels (1-5V)+1 channel (4-20mA) | 3 channels (1-5V)+1 channel (4-20mA) | 2 channels (1-5V)+1 channel (4-20mA)|
|Total number of digital I/O | 6 channels (can be set as DI or DO through parameters) | 14 channels (10 fixed DI/DO channels) | 6 channels|
|Direct input options | Supports mV, thermocouple RTD、 Potentiometer, etc. (corresponding/A01-/A08 optional code required) | Same basic type | Supported by some models|
Communication function
Optional interfaces: Ethernet (Modbus/TCP, basic only), RS485 (PC Link/Modbus/point-to-point communication/YS protocol), DCS-LCS communication
Communication capability: Supports host systems (CENTUM CS 3000, FA-M3 PLC, etc.) to read and write measurement values/parameters, and can disable write permissions
Point to point communication: Up to 32 YS1700s can be interconnected, with 4 sending data (each with 4 analog channels and 16 status data channels), with an average communication cycle of 200ms
Host control modes: DDC mode (host directly controls MV), SPC mode (host controls SV); After communication failure, it can be switched to MAN/OUT backup mode
Programming and software support
Configuration software: YSS1000 Setting Software, supports developing programs on the computer and downloading them to the controller
Programming mode: either text programming or function block programming
Debugging function: online function block monitoring (only function block programs), test run (supports 50 step/10 module simulation programs)
System requirements: Please refer to document GS01B08K02-01EN for details
Computing resources: 30 variables (P parameters), 100 constants (K parameters), 60 temporary memory registers
Model classification and accessories
Model suffix description | Suffix section | Meaning | Optional values|
|Part 1 (- x) | Manual Unit | -1 (with hard manual unit), -2 (without hard manual unit)|
|Part 2 (x) | Product Types | 0 (Basic Type), 1 (Scalable I/O Type), 2 (YS100 Compatible Type), 3 (YS80/EBS/EK Compatible Type), 4 (YS80 Compatible Type), 5 (100 Line Compatible Type)|
|Part 3 (x) | Power Supply | 0 (100V AC/24V DC), 1 (220V AC)|
|Optional code | Extended functions |/A01-/A08 (direct input),/A31-/A34 (communication),/FM/CSA (authentication), etc|
Standard and optional accessories
Standard accessories: metal fixtures, label seals, operating instructions, M4 screws, etc
Optional accessories: Expansion I/O terminal (YS010), Expansion I/O cable (YS011-03, 3 meters), RJC sensor (L3501RA), communication adapter cable, 120 Ω terminal resistor (YS020), etc
Replacement shell: SHUP series shell (compatible with YS80/EBS/EK series replacement), YS006 shell (compatible with 100 Line pneumatic instrument replacement)
Environment and working conditions
Working environment: temperature 0-50 ℃, relative humidity 5-90% (no condensation), altitude ≤ 2000m, atmospheric pressure 86-106kPa
Anti interference capability: Common mode noise suppression ratio 83dB (50/60Hz), series mode noise suppression ratio 46dB (50/60Hz)
Vibration impact: Continuous vibration 5-150Hz (amplitude ≤ 0.625mm/acceleration ≤ 4.9m/s ²), impact ≤ 49m/s ² (5G)
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