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InstallatIon
© TESVOLT We reserve the right to make technical changes! RD.TI.026.E.ENG_Installation_Manual_TSHV70OD_v.B.01 Last revised 01/2021
6.4 E-STOP CONTACT
The battery storage system has a quick shutdown (e-stop) function. The unit has an installed Wago 734-
162 two-pin plug that is accessible from the outside for this purpose. This electrical connection can be
connected to an external control system using the matching Wago 734-102 socket. If necessary, the
external control system can switch off the unit as quickly as possible using a separate (i.e. completely
independent) switching path. The shutdown is much faster than the normal shutdown process. The wir-
ing connection may only be implemented using a dry contact.
WARNING! Possible damage to the battery storage system by using the e-stop
The e-stop device is used to quickly shut down the system if a malfunction occurs. As the battery stor-
age system is not switched off properly when the e-stop is used, this may lead to damage to the battery
storage system components. For this reason, never use the e-stop to switch off the battery storage sys-
tem under normal circumstances.
ATTENTION! Possible damage to the APU HV1000-S or external components due to an unsuitable
switching device
The e-stop contact is at a voltage of 24 V
DC
relative to the potential of the casing. This voltage is created
from the battery voltage by the power supply unit in the APU HV1000-S. Connecting a wet switching
device can result in damage to the APU HV1000-S and/or external components.
E-stop states
1.
Contacts 1 and 2 of the Wago plug are connected (e.g. by an external relay). The e-stop is inactive
and the APU HV1000-S is therefore switched on.
2.
Contacts 1 and 2 on the Wago plug are open (e.g. after activation of the external switch); the e-stop
is active (this is shown on the APU HV1000-S display); the DC connection between the battery stor-
age system and the battery inverter is interrupted.
Request to the external control system
As the e-stop uses an internal voltage of 24 V
DC
within the unit, external relay switching by means of a dry
contact must be used for correct functioning. This switching can be adapted to match the requirements of
the external control system. The possible circuit situations are shown in the figures below.
1. without e-stop function
due to bridge
1
2
2. with e-stop function and emergency shutdown button
1
2
3. with e-stop function and external control system
1
A1
A2
2
1
APU (1)
APU (2)
APU (3)
APU (n)
APU (1)
APU (2)
APU (3)
APU (n)
2
1
APU (1)
APU (2)
APU (3)
APU (n)
APU (1)
APU (2)
APU (3)
APU (n)
2
A1
A2
Figure 6.1 Various possible circuit situations for the e-stop
NOTE:
If you are not using the e-stop function, the bridged plug must be fitted to the e-stop connection
4
as
the storage system will otherwise remain inactive!
1
E-stop connection
4
on the APU HV1000-S with Wago plug with
bridge between contacts 1 and 2.
STOP
STOP
