5.1.4 Connection of the emergency shutdown, dropping of the loads
The function of the emergency shutdown EPO or REPO (REMOTE EMER-
GENCY POWER OFF) serves the immediate dropping of the connected loads
from a distance of known dimensions. For this, an external emergency release
button must be connected to the signal input EPO (isolated contact).
Fig. 5-3 Connector plug
of the EPO function.
The emergency shutdown button must be realized as standard “opener” in the
MTX series! If the EPO remote triggering is not used, the connection must re-
main closed (bridge). However, the input logic can be changed in the device
setting so that a “normally open contact” behavior is also possible.
5.1.5 Connection to the external battery bank
Generally, the external battery bank of this device series has the required con-
nection cable for the UPS coupling. A lengthening of this connection is not in-
tended. These battery banks are also equipped with an additional parallel port
(DC) in order to be able to additionally employ an external battery bank until the
desired capacity (or autonomous time) is achieved. See the corressponding il-
lustration (Fig. 5-4).
As a rule, always ensure that the connection data of both devices (battery bank
and USV) conform with each other before making a connection.
Also check that the circuit breaker(s) of the battery bank(s) are
switched off during the coupling.
The connection to the battery bank only occurs by means of the battery bank
cable and the grounding of the battery bank:
• First, connect the protective conductors of the UPS
system to the battery banks (enclosed ground wire,
1.5mm² with cable eye, in each battery bank).
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