Product Core Brief
- Model: YS170-012
- Brand: YOKOGAWA
- Series: YS170 Programmable Loop Controller
- Core Function: Executes single-loop PID control with integrated logic and math functions.
- Product Type: Programmable Loop Controller / Regulator
- Key Specs: 99-Step MPR Programming | 6 DI / 6 DO | RS232C Interface
- Condition: New Original / New Surplus
Product Introduction
YOKOGAWA YS170-012 programmable loop controllers combine standard PID regulation with advanced logic in a single panel-mount unit. This industrial automation unit features a full-dot LCD display for clear PV, SV, and MV monitoring.
The YOKOGAWA YS170-012 supports up to 99 steps of Main Program (MPR) and 99 steps of Sub Program (SPR). It provides six discrete inputs and six discrete outputs, eliminating the need for external relays in complex control strategies.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Control Algorithm | Standard PID, Sampling PI, Batch PID |
| Program Capacity | 99-Step MPR / 99-Step SPR |
| Discrete I/O | 6 Digital Inputs / 6 Digital Outputs |
| Analog Input | 1-5V DC, Thermocouple, RTD, mV |
| Display Type | Full-Dot LCD with Backlight |
| Communication | RS232C Interface |
| Programming Method | PC Software (YSS10-210) |
| Operating Modes | Auto, Manual, Cascade |
| Power Supply | AC 100V to 240V / 50-60Hz |
| Self-Tuning | PID Parameter Auto-Tuning |
Quality Control Process
Every YOKOGAWA YS170-012 undergoes a strict hardware validation process before shipping. We first verify the LCD backlight and display segments by navigating through the LOOP, TREND, and ALARM screens. Next, technicians inject 4-20mA and 1-5V signals into the analog inputs using precision calibrators to verify engineering unit scaling.
We also test the six discrete inputs and outputs to confirm proper switching and isolation. The RS232C port is validated by successfully downloading a test program via the YSS10-210 software. Finally, the unit is sealed in anti-static packaging to protect the sensitive microprocessor during transit.
Replacement Pitfall Guide
❗ Verify the exact suffix code before ordering. The YOKOGAWA YS170-012 has specific variants for input types and communication options. A mismatched suffix code will halt your installation.
❗ Mind the panel cutout dimensions. While designed for easy replacement, verify the 96x96mm DIN cutout. Forgetting to account for mounting brackets or gaskets can cause fitment issues during retrofits.
❗ Check discrete I/O terminal availability. If your legacy system uses extra inputs, ensure you order the base model with expansion I/O. You cannot add expansion interfaces after the unit is received.
❗ Configure power supply options upfront. The unit accepts AC 100V to 240V, but this must be specified at the time of order. Wiring the wrong voltage will instantly destroy the power supply board.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level (Direct/Needs Adaptation) | Migration Notes |
|---|---|---|---|
| SLPC | AWA | Direct | Backward compatible with existing SLPC user programs |
| YS100 | AWA | Direct | Same panel cutout; terminal spacing differs slightly |
| YS80 | AWA | Needs Adaptation | Requires specific compatibility suffix codes (-3 or -4) |
- PID Internal Resolution: 1/65536, providing significantly finer control than older 1/4096 models.
- Programming Capacity: 99-step MPR and 99-step SPR, allowing for complex logic and sequencing.
