MorningStar Integration Guide

REV070219
SimpliPhi Power, Inc. | 3100 Camino Del Sol | Oxnard, CA 93030, USA | [phone] | [e-mail] | SimpliPhiPower.com
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Charge Example B: B
#PV
≥ I
PVChrgMax
/ I
BatChrgMax
• Max. continuous charge current for PHI 3.8 48V = 37.5A
• PV charge controller max = 60A
B
#PV
≥ 60A / 37.5A = 1.6
A properly sized PHI battery bank based on available PV charge would have a minimum of 2
batteries.
Sizing the battery bank in this way maximizes the use of available PV while ensuring the batteries are
never stressed by overcharging. If the PHI battery bank has fewer batteries than calculated, special care
must be taken with the charge controller settings to limit the charge rate below the specified rating of the
PHI battery. These settings are described in the following sections of this Integration Guide.
In summary: When comparing the same system using these two calculations for sizing the PHI
battery bank, the minimum number of batteries should be the greater of the two results (Discharge
Calculation & Charge Calculation). In the Discharge Calculation Example and Charge Calculation
Example A, this translates into 3 PHI batteries in the system.
4.0 – Program Settings for PHI Batteries
In order to maintain the Warranty, it is critical to ensure that the appropriate settings for the desired
Warranty are programmed in all of the system components. This section will cover the basic concepts and
settings for Morningstar equipment.
4.1 – Depth of Discharge
In order to optimize performance and the life of your system and PHI batteries, SimpliPhi recommends
programming the equipment settings for 80% Depth of Discharge (DoD). This qualifies for the SimpliPhi
10-year / 10,000 cycle Warranty on the PHI batteries. Greater DoD is possible, but will result in reduced
cycle life. Refer to the PHI Battery Warranty to compare DoD settings and the associated Warranty.
4.2 – Inverter Settings
The SureSine-300 inverter settings can be programmed to custom battery settings over Modbus on a PC
computer; there is currently no Setup Wizard (as is used to custom program Morningstar’s charge
controllers). A complete Modbus data editing guide from Morningstar is available at this link. In addition to
downloading ModScan32, a USB MeterBus Adapter (model UMC-1), linked here, is required. This
adapter allows you to interface between the inverter (which has an RJ-11 electrical interface) and your
PC computer (with a standard USB port).
Please review Table 1.0 below for Morningstar inverter program settings.
Table 1.0 - Settings for SimpliPhi PHI 730 & 1.4 Batteries w/ Morningstar SureSine-300 Inverter
SURESINE-300 INVERTER
PHI 730 Wh & 1.4 kWh; 12V
Setting
10k Cycles
(80% DoD)
5k Cycles
(90% DoD)
3.5k Cycles
(100% DoD)
Low Voltage Disconnect
12.6
12.4
12
Low Voltage Reconnect
12.8
12.8
12.8
LVD Warning Threshold (buzzer)
12.6
LVD Delay Period
10 sec
Instant LVD
12
High Voltage Disconnect
15
High Voltage Reconnect
14
Notes:
• The SureSine-300 is an inverter without a built-in charger.