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General| Brand | Tyco |
|---|---|
| Model | DigiTrace 920 Series |
| Category | Controller |
| Language | English |
Outlines important safety precautions for operators during installation and servicing.
Refers to diagrams for typical connection configurations.
Details terminal assignments and wiring for temperature sensors (RTDs).
Details the terminal connections for supplying power to the controller.
Procedures for testing heating cable integrity before initial power-up.
Configures parameters for each control point (A or B).
Selects the control algorithm (proportional, deadband, etc.) for maintaining temperature.
Adjusts the proportional band for precise temperature control with SSRs.
Configures the deadband for contactor control to prevent rapid cycling.
Defines the current rating of the output switch for SSR protection.
Helps prevent circuit breaker trips due to in-rush current.
Limits the maximum average power applied to a heat trace circuit.
Determines controller action when temperature sensors fail.
Selects how the controller uses temperature sensor inputs for control.
Indicates an open or shorted failure of the TS 1 temperature sensor.
Alarms failure of the designated control temperature sensor.
Sets upper limit for ground-fault leakage, tripping output off.
Protects the SSR output switch from excessive current.
Indicates if the output switch has failed closed.
Indicates a failure in the controller's nonvolatile memory.
The temperature used by the controller to determine output status.
Explains the different switch control modes and their parameters.
Describes proportional control implemented via SSRs for temperature regulation.
Explains deadband control used with external contactors for temperature regulation.
Describes proportional control using ambient temperature with SSRs.
Identifies common issues, symptoms, and checks for heat trace circuits.
Discusses RTD failures, wiring issues, and troubleshooting methods.
Provides a guide to common alarms and their potential causes.
