
YOKOGAWA programmable controller, model SLCD-151
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Yokogawa
Description
Yokogawa SLCD‑151 Programmable Indicating Controller
Core Identity
- Model: SLCD‑151*E (Style E)
- Series: YS80 (rack‑mount instruments)
- Status: Discontinued (replaced by YS1500‑200)
- Type: Single‑loop programmable indicating controller
- Programming: Requires SPRG‑E Programmer (handheld/rack‑mount)
Key Specifications
I/O & Signals
- Analog Input: 5 points (1–5 V DC)
- Analog Output: 2 points (4–20 mA DC)
- Digital I/O: 8 inputs / 4 outputs (for sequence logic)
- Control Modes: PID, cascade, ratio, batch, dead‑time compensation
Display & Operation
- Indicator: Moving‑coil pointer + digital display
- Keypad: Front‑panel for parameter setup
- Programming: 46+ math/logic functions; EPROM‑based program storage
Physical
- Dimensions: 76 (W) × 178 (H) × 457 (D) mm
- Weight: ~3.4 kg
- Mounting: 19‑inch rack (48 mm width)
- Power: 100–240 V AC, 50/60 Hz
Environmental
- Operating Temp: 0–50 °C
- Humidity: 5–95% RH (non‑condensing)
Model Code Breakdown
- SLCD: Single‑Loop Controller (Display)
- 151: 1 = Moving‑coil indicator; 5 = Enhanced functions; 1 = Fixed
- E: Style E (standard rack‑mount)
- MTS: Mounting kit (common option)
Compatibility & Programming
- Programmer: SPRG‑E (for program write/monitor/EPROM burn)
- Compatible Series: YS80 rack instruments (SLPC, SPCM, SPLR, etc.)
- Replacement: YS1500‑200 (modern indicating controller)








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