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VD (E3.1) 10/2020 page 92/179
11.2.4 Function check
Check the safety controller at appropriate intervals for its functionality. It is recommended that the
authorized operating personnel should perform such a check, e.g., before starting a longer work
procedure.
12. Tolerance range settings
In this menu you can define for temperature and pressure the deviation between the actual value and
setpoint, which that shall cause a tolerance range alarm. The entered value defines the limit of permitted
deviations from the set-point (exceeding and falling below). Reaching this limit triggers tolerance alarm.
In addition, you can specify delay times for these alarms.
This function only activates after the set-point has been reached once.
12.1 RD4 controller
Required access level: “Admin”.
12.1.1 Setting the delay time for temperature tolerance range alarm
Path: Normal display Settings Various Temp. alarm delay(min)
Press the OK button to enable the setting.
Setting the delay for temperature tolerance range alarm.
The current setting flashes. Use the arrow buttons to enter the
desired time after which the range alarm shall be triggered. Entry
range: 1 up to 120 minutes.
Confirm the entry with the OK button.
Temp. alarm delay(min)
With the arrow-down button you can now change to the temperature tolerance range setting.
With the Back button you can go back to the “Various” submenu and, repeatedly pressing it, to Normal
display.
12.1.2 Setting the temperature tolerance range
Path: Normal display Settings Various Temperature range(°C)
Press the OK button to enable the setting.
Setting the temperature tolerance range
The current setting flashes. Enter the desired temperature range with
the arrow buttons. Entry range: 1.0 °C up to 10.0 °C
Confirm the entry with the OK button.
Temperature range(°C)
With the arrow-up button you can go back to setting the delay for temperature tolerance range alarm.
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