5.7 BLOWDOWN ROUTINE
This routine runs if the electrolyser has not been in STEADY or RAMP UP mode for a longer time. A
warning appears that notifies the operator when the routine starts: WARNING "WO_20". The
blowdown routine does not interfere with the normal ramp up routine.
If the pressure on the hydrogen line outside the electrolyser is higher than 25 barg the blowdown
routine will not take place.
5.8 ANTI-FREEZING ROUTINE
The anti-freezing routine is an automatic routine which will check the temperature on the internal
electrolyte tank to prevent the electrolyte from freezing. If the temperature is below 6 °C the heater
and circulation pump will be turned on. It switches off, once the electrolyte reaches 10 °C again. This
routine also checks the flow of the circulation pump and verifies that there are no obstructions in the
inner piping system.
5.9 SAFETY HEARTBEAT
The Safety Heartbeat functionality is a periodic signal transmitted between the device and the gateway
to detect if the device is still connected to the cloud. If the device does not receive the signal anymore,
it will undergo a normal ramp down. This allows the operator to always access the cloud data if the
device is running. This feature is optional and can be switched off as well. Find further information on
Safety Heartbeat in the handbook.
To activate Safety Heartbeat via Gateway:
1. Connect the device to the Gateway
2. Configure Safety Heartbeat on the Gateway
To activate Safety Heartbeat via Modbus, follow the heartbeat instructions for Modbus.
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