The Harmo HMC-FA・O series is a mold temperature controller designed for injection molding applications where precise mold temperature management directly influences part quality, cycle time, and scrap rate. The unit combines a heating/cooling PID control algorithm with an LCD display and a set of automation features—mold memory, programmable timers, and maintenance alerts—that target the operational inefficiencies common in multi-mold, multi-shift production environments.

Mold Memory — Eliminate Setup Errors During Mold Changes

• Up to 100 Preset Sets: Each set stores the target temperature, start timer duration, and stop timer duration for a specific mold. When a mold is reinstalled after storage, the operator selects the corresponding preset from memory, and the controller immediately loads all parameters—no manual re-entry, no risk of transposition errors.
• Rapid Mold Changeover: In a typical injection molding cell running 10–20 different molds per week, the time saved by recalling presets rather than re-entering parameters manually compounds into several hours of recovered production capacity per month.

Programmable Timers with Energy-Saving Auto-Dim

• Start Timer (99 h 59 min, 15 h Backup): Program the controller to begin preheating the mold at a specific time before the shift starts. The 15-hour backup ensures the timer setting is retained during weekend power-off periods so the mold is at operating temperature when the Monday morning shift arrives.
• Stop Timer (99 h 59 min): Automatically shut down the temperature control unit after a set duration, preventing unnecessary energy consumption if a production run finishes early or the machine is left unattended.
• Auto-Dim Function: During start timer operation, the LCD display automatically turns off to reduce power consumption. The display reactivates when the timer ends or when an operator interacts with the panel.

Unified Control Panel — One Operating Logic Across Equipment

• Common Interface with THD-F Dryers: The HMC-FA・O controller panel shares the same operating logic, button layout, and display format as Harmo's THD-F series hopper dryers. An operator trained on one device can operate the other without additional instruction, reducing training time and cross-operation errors.
• Maintenance Alert: The controller tracks cumulative operating hours and displays a notification when a preset service interval is reached—prompting timely pump inspection, fluid replacement, and filter cleaning before a failure occurs.

Options for Remote Operation and Monitoring

• Infrared Remote Controller: Enables wireless operation of basic functions from a distance, useful when the control panel is mounted in a location that is difficult to access directly.
• Return Fluid Temperature Monitoring: An optional sensor measures the temperature of the return fluid and displays the difference between the supply and return temperatures. An external output signal can be configured to trigger an alert if the temperature difference exceeds a defined threshold, indicating reduced flow or a blocked cooling channel.
• HAL-NET Communication: Connects the temperature controller to other Harmo auxiliary equipment for coordinated operation and centralized monitoring.

Applications

• Injection molding of engineering plastics requiring precise mold temperature control (PBT, PA, PC, POM)
• Multi-cavity molds where uniform temperature distribution is critical to dimensional consistency
• High-gloss and optical parts where mold surface temperature directly affects surface finish quality
• Production cells with frequent mold changes requiring rapid, error-free temperature setup
• Automated lights-out manufacturing relying on programmable start/stop timers