[ElTrcH21] Electrical trace heating
Program block, name / node subtype: [ElTrcH21] Electric trace heating
Library hierarchy: Universal functions
Family: ElTrcH
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Configurator
Program blocks are stored in the library without I/Os. Use the auto-create and auto-connect functions to create I/Os and/or to connect them to the interface blocks, e.g., R_A, CMD_B. Alternatively, take the I/Os from the folder containing the predefined I/Os in the library and/or from the plant and connect them to the interface blocks.
Controls the electrical trace heating with an interface to its control unit.
Trace heating is enabled based on outside temperature to prevent the medium from freezing.
A switch-on point for the outside temperature is defined with an analog configuration value.
This program block has the following optional functions:
Option: Fault (1xBI)
Reads the fault signal from the control unit and generates an alarm.
Option: Feedback (1xBI)
Reads the feedback signal, e.g., from a control unit, and generates an alarm if feedback is missing when the trace heating must run.
Option: Maintenance switch (1xBI)
Reads the signal from the maintenance switch and generates an alarm. If active, the outputs are stopped with very high priority (priority 2).
Name | Description | Type | Alarm / Notification class | Trend / Type | |
|---|---|---|---|---|---|
Cmd | Command | BO: Binary output | No | Yes, 4 | |
SwiOnPt | Switch-on point | ACnfVal: Analog configuration value | No | Yes, 4 | |
Name | Description | Type | Alarm / Notification class | Trend / Type | |
|---|---|---|---|---|---|
Flt | Fault | BI: Binary input | Yes, 4/5 | No | |
Fb | Feedback | BI: Binary input | Yes, 4 | No | |
MntnSwi | Maintenance switch | BI: Binary input | Yes, 5 | No | |