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2020 Sensata Technologies
Operation
3.9 Conditions for Saving (Non-Default) Settings
When the MSH3012RV is
fi
rst connected to battery power, it uses its factory default settings (see
Section 3.7) to perform the inverter and charger functions. However, this inverter will save settings
1
from a RV-C network (or from a remote control) and use these newly saved settings—instead of
the original factory default settings—when connected in another RV-C network.
These newly saved RV-C settings are retained—even if all power is removed from the inverter or
a reset of the inverter is performed—and used when connected to an RV-C network, until newer
settings are received from the RV-C network.
Note 1:
Saved Settings = Battery Type, Battery Size, Charge Rate, Shore/Input Amps, LBCO.
Info:
The inverter will use its factory default settings (or remote control settings) when
not connected to a RV-C network.
Info:
This inverter has the ability to receive settings and commands from only one device
at a time. If both a RV-C network and remote control are connected to the inverter at
the same time, both can receive information from the inverter, but the inverter will only
receive settings and commands from the remote control.
3.10 Assigning Addresses to the MSH3012RV Inverter
Each inverter on the same RV-C network must have its own unique address number so that the
network can communicate with the inverters individually. When installing the MSH3012RV inverter
to an active RV-C network, it will automatically be assigned an address (normally #1). If another
MSH3012RV inverter is later connected to the same RV-C bus network, it will be automatically
assigned the next address (normally address #2). However, if two inverters are connected to the
same RV-C network at the same time, they both may be automatically assigned as address #1. In
order to assign address #2 to one of the inverters, follow the procedure in Section 3.10.1.
3.10.1 Assigning Address #2 to the MSH3012RV Inverter
While both inverters are connected to the RV-C network, perform a soft reset (as described below
or in Section 4.2.1) on the inverter that you want to assign to address #2.
To perform a soft reset:
1. Press and hold the Power ON/OFF pushbutton (see Figure 4-1) until the Charging/Inverting
Status LED (green) blinks very rapidly (i.e.,
fl
utters) - this takes approximately 10 seconds
2. Once the Status LED (green) begins to blink rapidly (i.e.,
fl
utters), release the Power ON/
OFF pushbutton and verify that the Status LED goes off after the pushbutton is released.
This inverter should now be automatically assigned as address #2 and can be con
fi
rmed by
verifying that the RV-C LED indicator (yellow) is blinking twice with a 1-second pause.
Note: Allow at least 10 seconds after a soft reset for the inverter to reassign the address and
start blinking.
Info:
To reassign an inverter back to address #1, remove all inverters from the RV-C
network except for the one you want to reassigned as address #1. Then perform an
inverter soft reset on the inverter that remains on the RV-C network (see Section 4.2.1).
3.11 Troubleshooting the RV-C Port
Once the MSH3012RV inverter is powered-up, verify the RV-C status LED (yellow) is blinking to
indicate its address number.
a. If the LED is not blinking: 1. Check that the LED is not bad by removing all power from the
MSH3012RV, then reconnect battery power and watch the RV-C LED; it should come on for two
seconds, then go out. 2. The inverter is not powered and/or not connected to an RV-C network.
b. The inverter is not able to communicate with the RV-C network: Check that the RV-C cable
that is connected to the inverter is receiving data and power from the network bus. Remove the
RV-C cable from the inverter’s RV-C connector and plug this cable into a different RV-C compliant
device to ensure that device works with this cable. Ensure that the voltage from pins 3 and 4 (see
Figure 2-18) is 8 to 17 volts DC.
