DALEMANS U-H1, Instruction Manual

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Finally, all or part of the alarms can be notified to an external piece of equipment, such as a central
technical management system, by an action on an additional alarm relay.
At any moment, the status of the control unit and the triggering of each of the functions presented may
be observed visually through the elements on its front:
•
A display with a backlight that varies based on the status of the U•H1 control unit and
providing an explanation of this status.
•
A set of colour LEDs providing more specific information on these functions.
•
An audible buzzer, which can be reset, is activated in the event of an alarm or by error
function.
Display interface
LED
LED indicators
“ Power ” LED The control unit is supplied by the main power.
“ Fault ” LED Presence of a technical fault connected to the fault
relay or not.
“ Inhibit ” LED The control unit is in a particular operating mode:
The measurement of the gas concentrations and the
alarm management still takes place, but the status
of the alarm relay is unchanged. This mode
spontaneously stops after 15 minutes of
inactivity.
Keypad
LED Indicators
Display