The CHPL Series by Chromalox is a sophisticated Heat Trace Control Panel designed for line-sensing applications in ordinary areas. It integrates a 9-inch touchscreen HMI and PLC-based monitoring/control system, offering real-time visualization and centralized configuration for up to 48 or 60 circuits.

1. Main Menu Screen

The main interface displays real-time data for up to 6 circuits per page, including:

•  Process Temperature (°C)
•  Setpoint (°C)
•  Load Output (%)
•  Current (Amps)
•  Status Indicators: HI TEMP, LO AMPS, SENSOR FAIL, G_F (Ground Fault)
•  Control Mode: PID, Auto, Disabled

This screen provides a comprehensive overview, allowing operators to identify alarms or abnormal behaviors across all circuits instantly.

2. Temperature Setup Menu

This menu allows the user to configure temperature-related parameters such as:

•  Setpoint Temperature
•  High / Low Temperature Limits
•  Deadband (°C)
•  Control Mode Selection: ON/OFF or PID
•  Output Enable/Disable for each circuit

The “Apply Globally” button lets users apply the same settings across multiple circuits, streamlining setup for large systems.

3. Load Setup Menu

This section focuses on electrical safety and monitoring by allowing users to set:

•  Low Amperage Setpoint
•  Ground Fault Setpoint (GF Stpt, mA)

Again, global settings can be applied across multiple circuits with a single action.

4. Manual Control Menu

The Manual Control screen enables local override of automatic control. Each circuit allows:

•  Mode Switching: Auto / Manual
•  Manual Output Setting: Adjustable in %
•  On/Off Output Control

This is particularly useful during maintenance, commissioning, or emergency conditions where manual intervention is required.

Key Features of CHPL Control Panel

• Supports up to 48 or 60 circuits
• 32A per circuit, with 400V service input
•  SSR-controlled outputs with Auto (PID or ON/OFF) and Manual (0–100%) modes
•  Real-time monitoring via 9” touchscreen HMI
• Advanced alarms for high/low temperature, ground fault, sensor errors, low current, and communication failure
• Event logging and Modbus TCP/IP remote communication support
• IP56 stainless steel enclosure with internal lighting and rain cover
• Quick menu navigation and intuitive user interface with Windows-style screens

Conclusion

The CHPL Series with 9” HMI represents a powerful and user-friendly solution for industrial heat trace applications. With complete visibility into temperature, current, alarms, and control modes, it allows for safe and efficient operation of multi-circuit systems. Its remote accessibility and advanced configuration options make it ideal for both operational and maintenance teams.

Download Link: https://skyline-engineering.com/wp-content/uploads/2025/04/Control-Panel-Datasheet.pdf