Description
The Watlow 96B0-CDDR-00RG is a \frac{1}{16} DIN microprocessor-based temperature and process controller within the Series 96 product family. Engineered to support single-loop configurations, this hardware manages complex process loops by utilizing a universal sensor input combined with specific hardware outputs for heating, cooling, or auxiliary signaling.
Commercial Availability & Terms
- Condition: Refurbished (bench-tested, fully functional) or New Surplus (legacy stock)
- Availability: Discontinued by the original manufacturer; available via specialized industrial automation legacy distributors. Standard shipping applies within 24 to 48 hours depending on regional stock locations.
- Warranty: 12-month comprehensive supplier warranty.
- Pricing Note: Price varies depending on market availability, current industrial component sourcing demands, and unit condition. Contact our sales engineering team for a firm, formal quotation.
Technical Specifications
| Parameter | Value / Specification |
| Manufacturer | Watlow |
| Model Number | 96B0-CDDR-00RG |
| Controller Size | \frac{1}{16} DIN Panel Mount |
| Power Input Range | 24 to 28 V AC/DC |
| Input Channels | 1 Universal Input (Thermocouple, RTD, or Linear 0-5 V DC / 4-20 mA) |
| Output 1 | Switched DC (typically used for driving External Solid-State Relays) |
| Output 2 | Electromechanical Relay |
| Output 3 | Electromechanical Relay |
| Output 4 | EIA/TIA-232 Serial Communication Port |
| Display Configuration | Dual Red/Green LED alphanumeric presentation |
| Sampling Frequency | 10 Hz internal sampling rate |
| Front Panel Rating | NEMA 4X / IP65 enclosure protection when installed with panel gasket |
Part Number Breakdown & Configuration
The model code 96B0-CDDR-00RG denotes a highly precise hardware matrix inside the Watlow Series 96 engineering schema:
- 96: Series 96 Single-Loop Controller platform.
- B: \frac{1}{16} DIN package format configured with a standard hardware layout.
- 0: Standard software and base execution profile.
- C: Output 1 is configured as a Switched DC signal (0/5 V DC non-isolated), ideal for driving rapid-cycling external SSRs in electric thermal loops.
- D: Output 2 is an Electromechanical Form A Relay rated for auxiliary control or high/low limit alarms.
- D: Output 3 is an Electromechanical Form A Relay providing an independent contact path for secondary cooling stages or system alerts.
- R: Output 4 is populated as an EIA/TIA-232 serial interface utilizing Modbus RTU or Watlow’s legacy data protocol for SCADA polling.
- 00: Standard software configurations with no custom presets.
- RG: Red over Green dual-line display matrix (Process Value displayed in red, Setpoint Value in green).
Field Installation & Engineering Constraints
Thermal and Noise Considerations
When replacing or upgrading to the 24–28V power variant (96B0-CDDR-00RG), ensure the power line is properly filtered. Running low-voltage AC or DC power alongside high-voltage field contactor cables will introduce electrical transients that can cause CPU resets or corrupt temperature readings.
Sensor Input Configuration
The universal input requires explicit hardware positioning or internal menu selection via the front interface before connecting the field sensors. Ensure that the correct compensation wire matching the sensor type (e.g., Type J, Type K, or Pt100 RTD) is terminated onto the rear screw barrier terminals to prevent cold-junction measurement errors.
Caution: Output 1 is a switched DC circuit. Do not wire a line-voltage resistive load directly to this terminal pair. Attempting to switch inductive or heavy industrial current loads through Output 1 will cause immediate dielectric failure of the internal switching transistor.
Frequently Asked Questions
Can this unit be drop-in matched with a 120/240 V AC version?
No. The 96B0-CDDR-00RG operates specifically on a 24 to 28 V AC/DC power budget. Connecting this device to standard 120 V AC or 240 V AC field distribution networks will immediately damage the internal power transformer and circuit layers beyond repair. Verify the enclosure label carefully before energizing the loop.
How do I clear a “Sensor Break” or “bREAK” error on the display?
A “bREAK” error signifies that the internal micro-controller detects an open circuit on the primary input channel. Check for loose terminal screws on the rear of the device, a fractured thermocouple probe tip, or a severed lead wire on your RTD sensor elements.
Is it possible to use Output 2 and Output 3 as independent alarm contacts?
Yes. Output 2 and Output 3 are discrete electromechanical relays that can be individually mapped within the software configuration settings. They can be designated for process high alarms, process low alarms, deviation limits, or tied to specific loop profile steps within your ramp-and-soak recipes.
