This document
needs to be read
in conjunction
with the SP PRO
Instruction Manual
and SP LINK
instruction manual
(both found in the
SP LINK Help
menu).
All SP PRO inverters in a Powerchain system must:
- Have the same model number.
- Have the same firmware.
- Have a common battery bank.
- Be reset to factory defaults.
- Be a SP PRO series 2i or SP PRO series II with Advanced Comm Card Rev 5 and above.
Definitions
System Manager – Must be connected to L1 – all configuration, control and interaction is made via this SP PRO.
Phase Manager – Main SP PRO on L2, L3 and/or Split (180°).
Worker – any other SP PRO within system on any phase.
- ACC – SP Pro Advanced Comms Card (blue or black).
| Installation steps and main points |
1 | Install the SP PROs according to
the SP PRO Instruction Manual. · Group
together manager and workers for a particular phase (see Diagram 1). |
2 | Install the AC wiring (see Diagram
1). · AC
sub board to be central to SP PROs to minimise wiring length. · Keep
AC wiring together for all inverters on the same phase. · Where
possible, run common neutral for all inverters on the same phase. |
3 | Install DC Wiring and Configure
the Batteries (see diagram 1). · DC
wiring as short as practicable between SP PRO and DC switchboard. · Minimal
separation of DC cables, to reduce loop impedance. · All
DC wiring running together for inverters on the same phase. · Maintain
equidistance for parallel strings. |
4 | Connect the SP PRO Powerchain SYNC
connections and terminators. |
5 | Update Firmware then restore factory defaults. |
6 | Create the configuration for the
SP PRO Powerchain system, using the Site Configuration Wizard in SP LINK. |
7 | Connect to the SP PRO System
Manager via SP LINK, assign the SP PROs in the Powerchain system and save the
configuration. |
8 | Test the system
function. |
Install the SP PRO inverters so that the Managers and Workers for a particular phase are physically grouped together. For example in a three phase system with 3 SP PROs per phase install the SP PROs along the wall in the following order; L1 manager, L1 worker 1, L1 worker 2, L2 manager, L2 worker, 1L2 worker 2, L3 manager, L3 worker 1, L3 worker 2 (See Diagram 1).
- Where possible run a single (common) neutral for all SP PRO inverters on the same phase.
- The L and N cables either run in the same conduit or a twin cable is used. It is important that the cable pairs run in parallel and do not separate.
- The AC cabling must run together for all the inverters on the same phase.
- Minimise the AC cable length between an SP PRO and the sub board. It is recommended to have the AC sub board central to the SP PRO inverters to minimise AC cable length.
- The maximum allowable cable run is 10 metres from any SP PRO to the sub board where there is a single neutral for each phase (point 1).
Figure 1
shows the SP PRO
Single Phase
Powerchain AC
wiring schematic
with two workers
and an external CT
& AC source
contactor.
NOTE: A three phase Powerchain system with one or
more workers per phase MUST have external
CTs and an external AC Source contactor fitted.
Figure 3:
Three Phase AC
wiring
schematic,
external
contactor, two
workers per
phase
Battery protection must be a minimum of 630A per group. After the DC battery protection, the cables
can be split into one circuit per SP PRO, each supplied by minimum 70mm2 V90HT cables. Each circuit is protected
by a 250A HRC fuse or DC circuit breaker.
Make sure the DC cables are as short as possible with the
+ve and -ve cables running together and Keep
DC wiring together for all inverters on the same phase (See Diagram 1).
Figure 4:
Main DC wiring
schematic
showing nine
SP
PROs.
The SP PRO Powerchain DC pre-charge and midpoint wiring
layout is shown in Figure 5.
The pre-charge wiring is wired as a bus arrangement and
connected to the battery via a common connection for all SP PROs. This will allow all SP PROs to be pre-charged
together.
The Midpoint wiring need only be connected to the System
Manager (L1). The System Manager carries out the battery sense and midpoint
readings for the system.
The pre-charge and midpoint
wiring must be protected by suitable fuses or a three pole circuit breaker
rated at least 2A DC per SP PRO. For the system below (Fig. 5) the pre-charge
circuit breaker rating is 18A or more.
Figure 5:
DC pre-charge
and midpoint
schematic
showing nine
SP
PROs
Every SP PRO
in a Powerchain
system must be
interconnected via
its SYNC
interface. Connect
every SP PRO
together via the
SYNC-1 or SYNC-2
connection, using
the supplied cat5
cables.
The SYNC-1
and SYNC-2
connection points
are identical, so
either may be used
for each
connection.
Each SP PRO
can be connected
together in any
sequence, with the
most logical
sequence being
connections
between adjacent
SP PROs. Ensure
that all SP PROs
in the Powerchain
system are linked
into one single
SYNC
chain.
NOTE: Termination
connectors MUST be
fitted to the two
unused SYNC
connectors.
SYNC
interconnection
of the SP
PROs
Download the
latest SP LINK from the
Selectronic web
site. This will
contain the latest
SP PRO firmware
and the latest Communications
Card firmware.
Apply DC
power to all the
SP PROs in the
Powerchain system
and wait until
they
start. The main battery breakers must be ON, not just the pre-charge breakers.
Connect the
SP LINK PC to the
USB port on the SP
PRO that will be
assigned as the
System Manager
(the Manager on L1
phase).
Select
Firmware Update
from the Easy
Start Guide and
update all of the
SP PROs in the
Powerchain system
to latest version
of firmware.
All SP PROs in the
Powerchain system
will be updated
via the System
Manager.
To
restore factory defaults:
- Apply battery power to
the SP PRO and make sure all units are in idle mode.
- Press and hold the Generator and Alarm buttons (B).
- Whilst still holding
these buttons, when the SP PRO beeps do a short press on the On button (C).
- All Green front panel LEDs will come on. Let go of
the Generator and Alarm buttons.
- The SP PRO will now
restart and go through the start-up sequence.
The Site
Configuration
Wizard is used to
create the
configuration for
the Powerchain
system. All
communications and
system
configuration are
carried out by
connecting to the
System Manager
(L1).
Once the
system is
configured,
communications to
other SP PROs in
the Powerchain
system is via the
System Manager.
The data
communications
ports on the other
SP PROs are
disabled.
1. Make sure the USB lead is connected between the System
Manager and PC.
2. Make sure the DC power is present at all of the SP
PROs.
Wait until the front panel LEDs are stable.
3. Start Selectronic SP LINK.
4. Select Site Configuration Wizard and step though the
wizard to setup the system to suite the Powerchain system application.
Hint: For
information on how to use the Site Configuration Wizard, right click on the
page in SP LINK and a help guide will appear.
SP PRO
Powerchain
Configuration
is now
complete
Once the SP
PROs are installed
and configured
correctly, the
system is
controlled by the
System Manager
(the first SP PRO
on L1). All other
SP PROs will
follow the
operational mode
of the System
Manager
automatically.
Startup
All
buttons and
battery LEDs are
disabled on the
Phase Managers and
the
Workers.
Select > L1 or L2 or L3 in SP LINK, then Manager or Worker to display the SP PRO’s distinct information.
Shutdown
- Turn off
the Battery
Isolator
- Turn off
the Battery
Sense /
Pre-charge
isolator
Additional Information