FRO­NIUS Rapid Shutdown Box Duo User manual

/ Perfect Charging / Perfect Welding / Solar Energy
42,0410,2207 007-22042016
Rapid Shutdown Box - Single
Rapid Shutdown Box - Multi
Operating Instructions
System monitoring
Instructions de service
Surveillance des installations
Manual de instrucciones
Supervisión del equipo
EN-USFRES

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Contents
General ...................................................................................................................................................... 5
Safety.................................................................................................................................................... 5
FCC / RSS Compliance ........................................................................................................................ 6
Device concept ..................................................................................................................................... 6
System limitations................................................................................................................................. 7
Maximum Distance Between the Rapid Shutdown Box and the Solar Modules................................... 7
Technical Data...................................................................................................................................... 8
Compatibility with Inverters................................................................................................................... 8
Service code 307 on the inverter .......................................................................................................... 9
Initiating Rapid Shutdown .................................................................................................................... 9
Resetting after Rapid Shutdown ........................................................................................................... 10
Installing the Rapid Shutdown Box ............................................................................................................ 11
Drilling pattern....................................................................................................................................... 11
Attaching the Rapid Shutdown Box Single to the wall .......................................................................... 11
Attaching the Rapid Shutdown Box Multi to the wall............................................................................. 12
Installing the Rapid Shutdown Box on a fixing bracket......................................................................... 12
Connecting the Rapid Shutdown Box ........................................................................................................ 13
Connecting the wires Rapid Shutdown Box Single............................................................................... 13
Connecting the wires Rapid Shutdown Box Multi ................................................................................. 14
Connecting Several Rapid Shutdown Boxes ........................................................................................ 15
Connecting the wires to the Terminals.................................................................................................. 16
Connecting the Rapid Shutdown Box to an Inverter ............................................................................ 16
Connecting the Rapid Shutdown Box to an Emergency Stop Button ................................................... 17

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General
Safety
Rapid Shutdown Box Single Rapid Shutdown Box Multi
WARNING! Incorrect operation and incorrectly performed work can cause seri-
ous injury and damage to property. Only qualified staff are authorized to commis-
sion the Rapid Shutdown Box and only within the scope of the respective
technical regulations. Read the safety rules before commissioning and perform-
ing maintenance work.
WARNING! Work performed incorrectly can cause serious injury and damage.
The Rapid Shutdown Box should only be installed and connected by licensed
electricians.
Follow the safety rules!
Before any installation or connection work is carried out, disconnect the AC sup-
ply to the inverter and the DC supply to the Rapid Shutdown Box.
WARNING! An electric shock can be fatal. Inadequately sized electrical compo-
nents can cause serious injury and damage to property.
- All electrical connections must be made in accordance with the National
Electrical Code, ANSI/NFPA 70, and any other regulations applicable to the
installation site.
- Installations in Canada must be carried out in accordance with applicable Ca-
nadian standards.
- Use min.194°F (90°C) copper wire for all grounding wires (see NEC table
250.122).
- Voltage drop and other considerations may mean larger cable cross sections
need to be used.
WARNING! An inadequate ground conductor connection can cause serious inju-
ry and damage to property. The housing screws provide an adequate ground con-
ductor connection for grounding the housing and should not be replaced under
any circumstances by other screws that do not provide a reliable ground conduc-
tor connection.
CAUTION! The following points must be observed in order to prevent damage to
the Rapid Shutdown Box:
- Do not use the Rapid Shutdown Box in harmful environments.
- The technical specifications must be followed.
- The pressure compensation membrane (1) must not be used for cabling.
(1) (1)

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FCC / RSS Com-
pliance
Device concept The Rapid Shutdown Box provides a convenient and safe way to comply with Article
690.12 in the 2014 Edition of the National Electrical Code. The device is powered directly
by the PV field and is controlled depending on the state of the signal port. The use of a DC
relay, which also functions as a switch-disconnector, ensures that the PV field is galvani-
cally isolated in the case of a Rapid Shutdown.
The Rapid Shutdown Box ensures that residual energy in the capacitors of the inverter is
discharged within the required time period. To ensure that the entire system functions cor-
rectly, the signal ports of all Rapid Shutdown Boxes must be serially connected (see sec-
tion "Connecting the Rapid Shutdown Box"). For this purpose, Single and Multi variants of
the device can be mixed randomly.
NOTE! Photovoltaic modules exposed to light supply current to the Rapid Shut-
down Box.
NOTE! When installing outdoors, only use waterproof conduit fittings and con-
duits. Conduit fittings and conduits are not included in the Rapid Shutdown Box's
scope of supply. Conduit fittings must always be installed with a counter nut. En-
sure that the conduit fittings are installed and sealed correctly.
NOTE! When connecting DC cables, ensure the polarity is correct.
IMPORTANT! Make sure the Rapid Shutdown Box is installed correctly. Overhead instal-
lation is not permitted.
IMPORTANT! The system status indicator shall be installed in a location in close proximity
to the system initiator, where the indication of safe shutdown can be clearly seen.
FCC
This device corresponds to the limit values for a digital device of class B in
accordance with Part 15 of the FCC regulations. The limit values should pro-
vide adequate protection against harmful interference in homes. This device
creates and uses high frequency energy and can interfere with radio com-
munications when not used in accordance with the instructions. However,
there is no guarantee against interference occurring in a particular installa-
tion.
If this device interferes with radio or television reception when turning the de-
vice on and off, it is recommended that the user solve this with one or more
of the following measures:
- adjust or reposition the receiving antenna
- increase the distance between the device and the receiver
- connect the device to another circuit, which does not include the receiv-
er
- for further support, please contact the retailer or an experienced radio/
TV technician.
Industry Canada RSS
The device corresponds to the license-free Industry Canada RSS stan-
dards. Operation is subject to the following conditions:
(1) The device may not cause harmful interference
(2) The device must accept any interference received, including interfer-
ence that may cause undesired operation.

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The Rapid Shutdown can be initialized by means of AC failure, if the signal lines are con-
nected to the inverter. Alternatively or additionally, Emergency Stop buttons or other but-
tons that interrupt the signal wires can also be used.
The Rapid Shutdown Box - Single can
connect one string. The Rapid Shutdown
Box - Multi offers the possibility to connect
up to four input strings. These become two
output strings combined.
System limita-
tions
Maximum number of Rapid Shutdown Boxes in one system: 5
Maximum line resistance permitted in the signal loop: 300 
Maximum Dis-
tance Between
the Rapid Shut-
down Box and the
Solar Modules
Input 1.1-
Input 1.2-
Input 1.1+
Input 1.2+
Input 2.1+
Input 2.2+
Input 2.1-
Input 2.2-
DC-Output 2DC-Output 1
RSB Multi
Conduit size:
3/4 in.
Conduit size:
1 in.

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Technical Data
Compatibility
with Inverters
Rapid Shutdown
Box Single
Rapid Shutdown
Box Multi
Max. voltage 600 V DC
Start voltage 80 V DC
Max. input current 17 A 25 A / 25 A
Power supply DC (from the solar modules)
Self-consumption during operation 2 W
Permissible operating temperature -40°F to +140°F (-40°C to +60°C)
Permissible humidity 0 - 100 % (not condensing)
Max. altitude 13123 ft. (4000 m)
Max. number of controlled circuits 1 2
Protection class Type 4X
Device dimensions h x w x d 7.87 x 5.51 x 3.54 in.
(200 x 140 x 90 mm)
11.02 x 7.87 x 3.94in.
(280 x 180 x 100mm)
Device weight 4.4 lbs. (2 kg) 8.6 lbs. (3,9 kg)
Shipping dimensions h x w x d 11.22x11.81x4.33 in.
(285x300x110 mm)
13.78x11.81x6.1in.
(350x300x155mm)
Shipping weight 5.8 lbs. (2,65 kg) 10.2 lbs. (4,6 kg)
Standards and regulations UL1741; LTR AE-004-2015; FCC15 Class B
Inverter Rapid Shutdown Box -
Single
Rapid Shutdown Box -
Multi
Fronius Galvo 1.5-1 208-240 -
Fronius Galvo 2.0-1 208-240 -
Fronius Galvo 2.5-1 208-240 -
Fronius Galvo 3.1-1 208-240 -
Fronius Primo 3.8-1 208-240
Fronius Primo 5.0-1 208-240
Fronius Primo 6.0-1 208-240
Fronius Primo 7.6-1 208-240
Fronius Primo 8.2-1 208-240
Fronius Primo 10.0-1 208-240 *) *)
Fronius Primo 11.4-1 208-240 *) *)
Fronius Primo 12.5-1 208-240 *) *)
Fronius Primo 15.0-1 208-240 *) *)
Fronius Symo 10.0-3 208-240

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*) only when connected to an external emergency stop button, RSB Multi should only be
used in pass-trough configuration
**) maximum DC-voltage: 600 V
Service code 307
on the inverter
The service codes on an inverter that is part of a PV system containing a Rapid Shutdown
Box can indicate a potential malfunction.
Service code 307 on the display of the inverter:
Description: At the input, the inverter identifies a DC voltage too low for the grid power feed
operation. If the service code occurs for a lengthy period of time in spite of solar radiation,
the following steps can help discovering the error:
- Check the position of the DC disconnector at the inverter - it should be ON
- Read the DC voltage on the display or measure it at the inverter terminals
- If the DC voltage is 0 V, this means that either the Rapid Shutdown Box is not sup-
plied with power from the pv array or there is no electrical connection between the
Rapid Shutdown Box and the inverter. Check DC cabling including Rapid Shut-
down Box inputs. Rapid Shutdown Box Multi: At least one string has to be con-
nected at input 1.
- If the DC voltage is 28 V, this means that the Rapid Shutdown Box is supplied with
power and is waiting for approval at the signal ports. Check cabling of the signal
loop and position of any switches in the signal loop.
- If the service code still occurs in spite of solar radiation, contact your system engineer.
Initiating Rapid
Shutdown
Depending on the configuration and the installation situation on site there are two
possibilitys to initate Rapid Shutdown:
- Via loss of AC: If you connected the Signal loop to the inverter (see Section … ), you
can initiate Rapid Shutdown by disconnecting the AC connection of the inverter (e.g.
at the service panel). In such a case the inverter detects the loss of AC and triggers
the Rapid Shutdown Boxes in order to isolate the PV array from the controlled conduc-
tors and discharge them.
- Via external switch: If the initiation via loss of AC is not suitable or additional possibil-
ities are required you can install external switches in the Signal loop (see Section …).
If so, Rapid Shutdown can be initiated by pressing one of those switches to trigger the
Rapid Shutdown Boxes in order to isolate the PV array from the controlled conductors
and discharge them.
Fronius Symo 12.0-3 208-240
Fronius Symo 15.0-3 208 - -
Fronius Symo 10.0-3 480 **)
Fronius Symo 12.5-3 480 **)
Fronius Symo 15.0-3 480 **)
Fronius Symo 17.5-3 480 **)
Fronius Symo 20.0-3 480 **)
Fronius Symo 22.7-3 480 **)
Fronius Symo 24.0-3 480 **)

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Resetting after
Rapid Shutdown
In order to start-up a PV system after Rapid Shutdown:
- Release the switch that was used to initate Rapid Shutdown in the first place to the
closed position
- Check all other external switches installed in the Signal loop for correct position
(closed)
- If the Signal loop is connected to the inverter AC must be present to restart.

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Installing the Rapid Shutdown Box
Drilling pattern Nameplate and warning labels should bei
accessible after mounting.
Attaching the
Rapid Shutdown
Box Single to the
wall
1 2
3 4
12
3 4

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Attaching the
Rapid Shutdown
Box Multi to the
wall
1 2
3 4
Installing the
Rapid Shutdown
Box on a fixing
bracket
1
Rapid Shutdown Box Single
1
Rapid Shutdown Box Multi
12
3 4
1 1

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Connecting the Rapid Shutdown Box
Connecting the
wires Rapid Shut-
down Box Single
1 2
3 4
5
12
3 4
1.3 ft.-lbs.
16 in.-lbs.
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Connecting the
wires Rapid Shut-
down Box Multi
IMPORTANT! Using 2 strings at least one
string must be connected to input 1 becau-
se the Rapid Shutdown Box gets the supply
from this input.
1 2
3 4
12
3 4

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5 6
7
Connecting Sev-
eral Rapid Shut-
down Boxes
5 6
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Connecting the
wires to the Ter-
minals
Connecting the
Rapid Shutdown
Box to an Inverter
Connection to the Inverter:
If the AC supply is interrupted, the inverter disconnects the DC supply via the Rapid Shut-
down Box. As soon as the AC supply is reinstated, the DC supply will resume.
The signal relay in the Fronius inverter is designed to open when the inverter loses AC
power signaling the Rapid Shutdown Box to disconnect. However, the signal relay cannot
be used for further functions (Energy Manager, alarm, etc.), if the Rapid Shutdown is to be
initialized by means of an AC failure.
The inverter doesn‘t have to be configured after the installation of the Rapid Shutdown Box.
If settings were made in the section energy management, check this sector. The energy
manager must be set on PERMAMENT ON.

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Connecting the
Rapid Shutdown
Box to an Emer-
gency Stop But-
ton
Connection to an External Emergency Stop Button:
If an external emergency stop is needed, it can be installed anywhere in the DC Signal line
using standard electrical installation processes. When pressing the Emergency Stop but-
ton that is connected, the DC supply is disconnected in the Rapid Shutdown Box. As soon
as the Emergency Stop button returns to its original position, the DC supply will resume.
Requirements for the external emergency stop button:
- Maximum switching load 30 V DC / 5 mA
- Rated voltage between contacts and housing: 600 V DC
put sticker on inverter
PHOTOVOLTAIC
RAPID SHUTDOWN
SYSTEM
EQUIPMENT

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Sommaire
Généralités................................................................................................................................................. 21
Sécurité................................................................................................................................................. 21
Conformité FCC / RSS.......................................................................................................................... 23
Concept d'appareil ................................................................................................................................ 23
Limites du système ............................................................................................................................... 24
Distance maximale entre la Rapid Shutdown Box et le module solaire................................................ 24
Caractéristiques techniques.................................................................................................................. 25
Compatibilité avec les onduleurs .......................................................................................................... 25
Code de service 307 sur l'onduleur ...................................................................................................... 26
Déclencher la Rapid Shutdown Box ..................................................................................................... 26
Réinitialisation après un Rapid Shutdown ............................................................................................ 27
Montage de la Rapid Shutdown Box.......................................................................................................... 28
Schéma de perçage.............................................................................................................................. 28
Montage de la Rapid Shutdown Box Single sur le mur......................................................................... 28
Montage de la Rapid Shutdown Box Multi sur le mur........................................................................... 29
Montage de la Rapid Shutdown Box sur une équerre de support ........................................................ 29
Raccorder la Rapid Shutdown Box ............................................................................................................ 30
Raccordement des fils à la Rapid Shutdown Box Single...................................................................... 30
Raccordement des fils à la Rapid Shutdown Box Multi ........................................................................ 31
Connexion de plusieurs Rapid Shutdown box ...................................................................................... 32
Indications concernant le branchement des fils aux bornes de raccordement ..................................... 33
Raccordement de la Rapid Shutdown Box à l'onduleur ....................................................................... 33
Raccordement de la Rapid Shutdown Box à un bouton d'arrêt d'urgence ........................................... 34

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