EL – Owner’s Manual – Rev.00 – September 2022 35
DRY CON circuit
The pins are, from top to bottom, S2, COM2, S1, COM1. This allows the device to not only receive a dry
contact signal but also to pass it on to the next Enapter device. The operator can daisy chain as many
Enapter devices as wanted to a common loop. To do that, connect a dry contact circuit to Circuit 1 (as
shown in the picture), using the specially supplied plug. If the circuit is interrupted (i.e., the dry contact
is opened), the device will immediately go to fatal error, stop the hydrogen production and release the
internal hydrogen by venting it through the H2 vent line.
Caution!
If one electrolyser within the DRY CON daisy chain is switched-off, the chain is
interrupted and the emergency stop signal will not be transferred to the downstream
devices
To implement the dry contact daisy chain, 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, and all devices
are switched on, they will stop their hydrogen production at the same time. 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!
To Next Page
Loading...
