Selec PID500-U Universal PID Controller with White+Green Display
Selec PID500-U Universal PID Temperature & Process Controller – 48×48 mm, Dual Display
Universal PID controller with TC/RTD/analog inputs, dual 4+4 digit LED display, adaptive/auto/self-tuning, heat–cool PID, up to 128-step profile control, retransmission output, and optional RS485 Modbus communication.
The Selec PID500-U is a powerful universal PID controller designed for advanced temperature and process control. With adaptive–auto–self tuning, universal inputs (TC/RTD/analog), relay/SSR/analog outputs, up to 128 program steps, heat–cool PID mode, and optional RS485 Modbus RTU, it is ideal for precision industrial automation applications.
Key Features
Universal input & universal output
Dual 4+4 digit LED display (15.3 mm + 8 mm)
Adaptive, Auto & Self-Tune PID / ON-OFF control
Heat–cool PID with independent bands and cycle times
Profile controller up to 128 steps
Retransmission analog output (0/4–20 mA, 0–5/10 V)
Capacitive touch keypad with IP65 front protection
SSR, relay, current & voltage outputs
Input filter FTC: 1–99 sec
Fast sampling: 200 ms
Alarm outputs with multiple modes
RS485 MODBUS RTU (optional)
IDM applicable
TECHNICAL SPECIFICATIONS
Display Specifications
| Parameter | Value |
|---|---|
| Display | Dual 4+4 digit LED (White + Green) |
| Upper/Lower Digit Height | 15.3 mm / 8 mm |
| Indicators | Main output: Alarm, Manual, Adaptive Tune |
Input Specifications
| Parameter | Value |
|---|---|
| Sensor Inputs | TC (J,K,T,R,S,C,E,B,N,L,U,W, Platinel II), RTD PT100 |
| Analog Inputs | −5 to 56 mV, 0–10 V, 0–20 mA |
| Resolution | 1/0.1°C (TC/RTD), up to 0.001 for analog |
| Accuracy | |
| • TC: 0.25% FS ±1 | |
| • R/S TC: 0.5% FS ±2 (20 min warm-up) | |
| • RTD: 0.1% FS ±1 | |
| • Analog: ±0.5%, ±1 digit | |
| Temperature Unit | °C / °F |
| Input Filter (FTC) | 1–99 sec |
| Sampling Time | 200 ms |
Output Specifications
Relay Outputs
| Output | Rating |
|---|---|
| Relay 1 & Relay 2 | 7A at 250VAC / 28VDC |
| Relay 3 | 10A at 250VAC / 28VDC |
SSR Drive Output
15 VDC pulse output
Analog Output / Retransmission
| Type | Range |
|---|---|
| Current | 0/4–20 mA (≤500 Ω load) |
| Voltage | 0–5 / 0–10 VDC (≥10kΩ load) |
| Update Rate | 100 ms |
Control Functions (PID / ON-OFF)
| Function | Range |
|---|---|
| Proportional Band (P) | 0.0–400.0°C |
| Integral Time (I) | 0–3600 sec |
| Derivative Time (D) | 0–200 sec |
| Cycle Time | 0.1–100 sec |
| Hysteresis | 0.1–99.9°C |
| Manual Reset | −19.9 to +19.9°C |
| Control Action | Adaptive/Auto/Self-Tune PID or ON-OFF |
Heat–Cool Function
| Parameter | Range |
|---|---|
| P-Band Cool | 0.0–400.0°C |
| Cycle Time Cool | 0.1–100 sec |
| Dead Band | SP low to SP high (programmable) |
Profile Control
| Parameter | Value |
|---|---|
| No. of Profiles | 8 |
| Steps per Profile | 16 |
| Max Steps | 128 |
| Supported Features | Link profiles, repeat cycles, power resume, deviation hold, alarm at steps with duration setting |
Alarm Output Settings
| Parameter | Value |
|---|---|
| Modes | Deviation High/Low, Absolute High/Low, Band, Sensor Break |
| Hysteresis | 0.1–99.9°C |
Environment & Electrical
| Parameter | Value |
|---|---|
| Supply Voltage | 90–270 VAC/DC |
| Power Consumption | 5 VA max |
| Operating Temp | 0–50°C |
| Storage Temp | –20 to 75°C |
| Humidity | 85% RH non-condensing |
| Weight | 101 g |
Applications
Ovens, furnaces, kilns
Plastic extrusion & injection moulding
Packaging & sealing machines
Temperature-controlled chambers
Food heating/processing equipment
Industrial automation panels
Process temperature & pressure loops (with analog scaling)
What’s in the Box?
Selec PID500-U Controller
Mounting clamps
User manual
Warranty information
FAQs
Q1. Does PID500-U support universal input?
Yes—TC, RTD, mV, V, and mA inputs are supported.
Q2. Does it support analog retransmission?
Yes—0/4–20 mA or 0–5/10 VDC analog output is available.
Q3. Can it run profile programs?
Yes—up to 8 profiles × 16 steps = 128 steps.
Q4. Is RS485 Modbus available?
Yes—model PID500-U-C-1 includes Modbus RTU.
Q5. How many relay outputs can it provide?
Up to 3 relays, depending on wiring.
Q6. Does it support heat–cool PID?
Yes—with independent P-band and cycle times.