The GHISALBA DTC series is a modular multi‑zone PID temperature regulator designed for DIN rail mounting in industrial control panels. Its modular architecture allows parallel connection of multiple temperature monitoring modules while significantly reducing wiring—each module connects to the next via a simple bus, eliminating the point‑to‑point wiring typical of panel‑mount controllers. The programmable PID function supports up to 64 sets of temperature and control time parameters, enabling single‑button changeover between different product recipes. An integrated RS‑485 interface with Modbus ASCII/RTU protocol supports synchronous communication and automatic ID assignment, simplifying multi‑module commissioning.

Modular Multi‑Zone Architecture with Simplified Wiring

• Parallel Module Extension: Multiple DTC modules can be connected in parallel to monitor and control numerous temperature points from a single power supply and communication bus. This eliminates the need for individual controllers per zone, reducing panel space, wiring complexity, and component count.
• DIN Rail Mounting: Each module snaps onto standard 35 mm DIN rails, enabling dense, organized installation within control cabinets alongside contactors, circuit breakers, and PLCs.
• Automatic ID Setup: The synchronous communication protocol assigns a unique ID to each module on the bus automatically, eliminating the manual DIP‑switch addressing required by conventional multi‑drop networks and reducing commissioning time.

Flexible I/O and 64 PID Program Storage

• Universal Inputs: Each module accepts thermocouples, RTDs, and standard analog signals (0‑5 V, 0‑10 V, 0‑20 mA, 4‑20 mA, 0‑50 mA), allowing a single DTC series to interface with diverse sensor types across different zones of the same machine.
• Dual‑Loop Heating/Cooling Control: Outputs can be configured for simultaneous heating and cooling control, enabling precise temperature regulation in applications where both heating elements and cooling circuits operate within the same process.
• Flexible Output Options: Available with relay outputs, linear current outputs, or retransmission outputs depending on the specific model, allowing the DTC to drive contactors, proportional valves, or interface with higher‑level control systems.
• 64 Programmable PID Sets: Up to 64 independent sets of PID parameters and target temperatures can be stored and recalled, enabling rapid changeover between different products or process stages without manual reprogramming.

Integrated Communication and Multi‑Level Security

• RS‑485 Modbus ASCII/RTU: The built‑in RS‑485 interface supports both Modbus ASCII and RTU protocols at baud rates from 2,400 to 38,400 bps. This enables direct integration with PLCs, SCADA systems, and HMIs for centralized monitoring, data logging, and remote setpoint adjustment.
• 3‑Level Password Protection: Access to controller parameters is protected on three distinct levels, preventing unauthorized changes by untrained personnel while allowing supervisors and engineers to modify process settings as needed. This is particularly valuable in production environments where multiple shifts operate the same equipment.
• 24 V DC Supply: All modules operate from a standard 24 V DC supply, compatible with industrial control panel power distribution and eliminating the need for separate AC power circuits at each temperature control point.

Applications

• Multi‑zone plastics extrusion and injection molding barrel temperature control
• Heat treatment furnaces with multiple independently controlled heating zones
• Packaging machinery with sequential heating stages
• Industrial process lines requiring centralized temperature monitoring via Modbus RTU
• Any application requiring space‑efficient DIN rail temperature control with multi‑zone expansion capability