EL – Owner’s Manual – Rev.00 – September 2021 25
To use the dry contact to shut down the hydrogen production, connect a normally closed dry contact
circuit to Circuit 1 (as shown in the picture), using the specially supplied plug. This circuit is generally
achieved by a relay system that is
triggered to open/close by signals sent
from a switch or sensor used to ensure
system safety. If the circuit is interrupted
(i.e., the dry contact is opened), the device
will immediately stop all hydrogen
production and return to a safe state by
purging.
To pass the signal on to the next Enapter
device, connect the two free contacts
(Circuit 2) to the Circuit 1 of the nearest
Enapter device. If the dry contact circuit is
triggered by an opened contact, all
connected devices will stop. Opening the
Dry Contact circuit will cause the stack to
be immediately de-energised and the
device to depressurise and to go into fatal
error. Dry contacts should not be used for
normal start and stop operation.
Unexpected power cuts to the stack
without normal ramp downs can shorten
the device’s lifetime and damage the
device!
Dry Contact Connection Bypass
To disable the dry con chain functionality, insert the dry con jumper with the red connection cable in
the lower part of the socket labelled with “DRY CON” like shown in the picture.
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