Product manual EM converterLED ST | 08-2018 | 1.0 | en
Functions in emergency operation
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5.3. Rest mode, Inhibit mode and Relight command
Emergency operation is automatically started when the mains supply is switched off. If the Rest mode is activated, the discharging of
the battery will be minimized by switching off the LED output.
Rest mode can be used during short periods of time when a building is completely unoccupied and the mains supply is to be switched
off intentionally, for example during a holiday period. Using Rest mode prevents a full discharge and possible damages to the
batteries during these times.
Rest mode has to be activated by a competent person. Activation is only possible after the mains supply has been switched off.
Contrary to this, if the Inhibit mode has been activated in advance, Rest mode will be automatically switched on if the mains supply is
switched off.
By sending the Relight command both modes, Rest mode and Inhibit mode, will be deactivated. The emergency unit will switch back
to the previous operating mode. If it has been in Rest mode, it will switch back to emergency mode, if it has been in Inhibit mode, it will
switch back to charging mode.
For all the different changes, activating Rest mode and Inhibit mode and sending the Relight command, DC voltage pulses of different
lengths are used. The table at
gives an overview of all the operating modes.
Switching between operating modes
, p. 16
5.3.1. Activate Rest mode
Rest mode is activated as follows:
5.3.2. Deactivate Rest mode via Relight command
By sending the Relight command the Rest mode is deactivated. The emergency unit will switch back to emergency mode.
To deactivate Rest mode via Relight command, proceed as follows:
½
CAUTION!
Even in Rest mode there is self discharge current and an extremely small level of discharge current flowing from the batteries. If the
batteries remain in Rest mode for prolonged periods of time this can lead to deep discharge and potential damage. Further
information can be found in the data sheet of the batteries (see
).
Reference list
, p. 38
Disconnect power supply
_
Apply DC voltage pulse at the two
terminal points "REST/L" and "REST/N"
_
The signal
of
must have an amplitude 9.5 - 22.5 V with a pulse length of 150 - 1,000 ms
_
The polarity of the voltage pulse does not matter
_
I
NOTICE
Rest mode cannot be activated as long as the power supply hasn't been disconnected.
The maximum number of emergency units on one bus is 100 pieces with a maximum recommended cable length of 1,000 metres.
Rest mode voltage can be applied across all emergency modules (parallel connection).
