Connecting The Rapid Shutdown Box To An Emergency Stop Button; Connecting The Rapid Shutdown Box To A Fronius Primo 10.0 / 11.4 / 12.5 / 15.0 - Fronius DUO Instrucciones De Instalación

Optional: Connecting the Grounding to a Ground Lug - Variant 1
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Optional: Connecting the Grounding to a Ground Lug - Variant 2
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Connecting the Connection to an External Emergency Stop Button:
Rapid Shutdown If an external emergency stop is needed, it can be installed anywhere in the Signal line us-
Box to an Emer- ing standard electrical installation procedures. When pressing the Emergency Stop button
gency Stop But- rapid shutdown is initiated and the pv-array is disconnected in the rapid shutdown box. As
ton soon as the Emergency Stop button returns to its original position, the pv-array is recon-
nected.
Requirements for the external emergency stop button:
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Connecting the
IMPORTANT! Wiring schemes show best practice examples assuming that more than two
Rapid Shutdown
PV strings connected in parallel require overcurrent protection (e.g. fusing). Refer to Primo
Box to a Fronius
installation manual regarding multi conductor wiring and fusing details
Primo 10.0 / 11.4 /
12.5 / 15.0 If multiple strings are connected to an MPP tracker, the string voltages should be as equal
as possible in order to avoid power losses.
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Maximum switching load 30 V DC / 5 mA
Rated voltage between contacts and housing: 600 V DC
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