‘Manual overrides’ is included in all subscription packages. You need permissions in Access Control to manage overrides. You’ll also need the Edit settings permissions to edit software values. The required level of edit settings is set in TC Engineer for each manual override element.
|Manual overrides are dangerous if you are not present on site. This is because you cannot see whether it is safe to activate or stop the relevant installation part.
Use the Manual overrides tab to control all the manual overrides in the system. The overview shows all digital and analog outputs and control module elements (e.g. time programs) per controller (Priva Blue ID S10 / C4): of the controller itself, the I/O modules connected to it and the underlying room control units (Comforte CX(2)(E) (VAV)).
Use the Active overrides switch to just show the manual overridden data points.
What are manual overrides?
Although the building installation functions automatically, there can sometimes be reasons to manually manipulate outputs of I/O modules or control signals from controls or time programs, for example for maintenance or in case of a malfunctioning device that passes on incorrect values.
Hardware overrides can be made by pressing the buttons on the hardware itself. Only the following hardware modules have manual override buttons:
- Priva Blue ID S-Line:
- AO2m Analogue output
- AO4m Analogue output
- DOR4m Relay output
- DOR8m Relay output
- Priva Blue ID C-Line:
- C4 C-MX34m Controller
- MX34m Mix input/output
- DOR6m Relay output
- Comforte CX(2)(E) (VAV):
Software overrides can be made in Building Operator (or in TC Engineer).
Manual overrides in Building Operator
Set or reset a manual override
By changing a software value, you set it to manual override. A hand icon appears, and column Override type shows Software. Software overrides can be reset to Automatic with the reset button . For safety reasons, hardware overrides cannot be set or reset in Building Operator.
Hardware override > software override: If you enter a value in software value for a hardware override data point, then you preset a software override for the future moment when hardware override is disabled.
Software override > hardware override: If you create a hardware override on a data point that has a software override, then the hardware override will overrule the software override.
Columns hardware and software value show the current values of the data points. The values in the hardware and software value column are equal unless there is a manual override. Then, you can see from the override type which value is the actual value.
The hardware value column only shows values that come from the hardware. So, this column is empty for control signals from controls or time programs.
No write permissions
An eye icon indicates that you have no write permissions for that data point. Depending on the settings in TC Engineer for this control module element, you need the Edit settings level 1, 2 or 3 permission in Access Control to obtain write permissions for this data point.
Installation code / Point reference
All inputs and outputs have unique codes called point reference (defined in TC Engineer). For instance, the code "3-TT1" may represent the hardware item "first temperature sensor of controller 3".
The ID (defined in TC Engineer) is used to easily find the physical location of the hardware.
|module position no.
|I/O point no.