SKU: CD66
The CD66 PID Controller offers all the advanced features you expect from a modern temperature controller, including a high-performance display for excellent readability.
Available with dual analogue input, the CD66 allows you to manage two processes with separate control loops or perform mathematical operations between them, such as sum, difference, or average.
The controller supports multiple output options, including command mode, various alarm modes, and analog retransmission of process or setpoint values.
For network communication, the controller uses an RS485 serial connection with the Modbus-RTU protocol. The versatile power supply, with 24Vac or dc and 115/230Vac versions, add flexibility and ensures stable performance even during power fluctuations.

CD66 RS485 Comms Capability
| Product Name | Temperature Controller - CD66 |
| Ideal For | Designed for all thermal heating and/or cooling applications that require front panel-mounted controls |
| Voltage Power Supply | 24Vac or dc (Standard) or 115/230Vac as option (±15%) 50/60Hz |
| Power Consumption | 6 Watt/VA |
| Display | 4 Digits (0.5"), 5 Digits (0.3") |
| Primary Input | 2 x analogue 16bit, programmable for thermocouples K, S, R, J, T, N, B (automatic compensation of cold junction-25 to 85°C, ±0.2% F.S. ±1 digit F.S.), RTD PT100, PT500, PT1000, Ni100, PTC1K, NTC10K (β 3435K), Process signals 0-10 V (50000 points), 0/4-20mA (40000 points), 0-60 mV (25000 points), potentiometer 1-150 KΩ (50000 points) |
| Digital Inputs | 4x PNP(overlapped to outputs SSR) |
| Digital outputs | 2x SSR 12/24Vdc - 25 mA max overlapped to inputs) |
| Auxiliary Outputs | 12/24Vdc - 30mA max for sensor supply |
| Relay Output | 3x 2A - 250Vac resistive load |
| Analogue outputs | 2x Selection 4-20 mA (40000 points ± 0.2% F.S.) or 0-10Vdc (40000 points ± 0.2% F.S.) for command or retransmission PV/SPV |
| Serial communication | RS485 (1200 to 115200 Baud) galvanically isolated |
| Control algorithms | ON - OFF with hysteresis, P., P.I., P.I.D., P.D. time proportional |
| Tuning | Manual or automatic |
| Alarm mode | Absolute / Threshold, Band, High / Low deviation. Alarm with optional Manual reset. Loop Break Alarm |
| Dual P.I.D. | Heating / Cooling with dual P.I.D. |
| Soft-Start | Rising gradient expressed as Degrees / Hour or fixed output percentage |
| Programmer function | Cycle with up to 12 steps and end-of-step recovery/waiting functions |
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CD Automation UK
Industrial power control. Backed by people who understand the application.