Description
1. At-A-Glance Executive Brief
- Model: YS110-001
- Brand: Yokogawa
- Part Type: Single Loop Indicating Controller
- Lifecycle Status: Legacy / Mature Support Tier
- System Compatibility: Yokogawa YS100 series panel instrumentation frameworks
- Weight: 1.5 kg
2. Technical Introduction
Problem: Plant operators dealing with aging control rooms frequently experience loop instability or display failures in legacy pneumatic-to-electronic architectures, risking severe process upsets.
Agitation: Sourcing obsolete controllers that require major panel cutouts or complete rewiring can stall turnaround schedules and inflate capital expenditure budgets.
Solution: The Yokogawa YS110-001 acts as a direct-replacement single-loop indicating controller that drops seamlessly into existing panel cutouts, providing microprocessor-based PID control, digital communication options, and reliable manual-automatic bumpless transfer to keep critical loops operational without hardware redesigns.
3. Core Technical Specifications
| Parameter | Value |
| Control Action | PID with derivative on PV or error |
| Input Signals | 1 to 5 V DC or 4 to 20 mA DC (via internal shunts) |
| Output Signals | 1 to 5 V DC / 4 to 20 mA DC control output |
| Power Supply | 100 to 120 V AC or 24 V DC (model dependent) |
| Display Type | VFD / LED dual bar graph and digital readout |
| Mounting Style | Flush panel mounting (YS100 standard case) |
| Accuracy Rating | \pm0.2% of span |
| Operating Temperature | 0 °C to 50 °C |
4. Field Engineer’s Tech Notes
- Battery Backup and Memory Retention: The internal lithium battery maintains configuration parameters and tuning constants during power interruptions. Check the battery voltage before commissioning; a depleted cell will cause parameter loss and revert the unit to default settings upon power cycling.
- Input Impedance Jumpers: Verify the internal jumper settings for current versus voltage inputs before connecting field loops. Feeding an unadjusted 4-20 mA current loop into a voltage-configured input terminal will cause inaccurate scaling and potential signal clipping.
5. Adaptive QA & Testing Protocol
Each unit undergoes precision signal simulation across input channels to verify 4-20 mA and 1-5 V loop accuracy, display scaling linearity, and PID control loop response. Technicians test bumpless transfer performance between manual and automatic operational modes, verify alarm relay contact closures, and check power supply regulation. Comprehensive test logs and verification videos are available upon request prior to shipment.
6. Buyer’s FAQ
- What is the typical shipping lead time for emergency orders?Stock items process and dispatch within 1 to 2 business days via priority international courier services to prevent extended facility downtime.
- Is this controller supplied as new surplus or refurbished?Inventory is available in verified New Surplus (NSFP) and thoroughly bench-tested refurbished conditions, backed by a standard operational warranty.
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