OutBack Power FLEXmax 100 User Manual

Applications
70 900-0209-01-00 Rev A
Positive-Ground Applications
The FLEXmax 100 can be used in a positive-ground system. However, due to internal grounding paths
between the controller and other devices, positive grounding allows only certain combinations of devices
in the configuration. These combinations are dependent upon whether or not the system is networked
together or the devices stand alone.
See page 14 for instructions and initial restrictions on positive grounding.
CAUTION: Equipment Damage
A system requiring positive grounding should only use the configurations specified in this section.
Connecting the FLEXmax 100 in other positive-ground configurations can damage the controller and
other devices. This damage is not covered under warranty.
Positive-Ground Networked Devices
A networked system includes the HUB Communications Manager and a MATE3s system display in the
configuration. The following conditions apply for all positive-ground devices communicating within the
system. They do not apply to non-communicating devices. (See below.)

Multiple FLEXmax 100 controllers can be networked on the HUB product.

One OutBack inverter can be networked with one or more FLEXmax 100 controllers on the HUB product
under the following conditions:
~ The FLEXnet DC Battery Monitor (FN-DC) is not present on the network
~ No devices are connected to the CAT5 port on the system display
This configuration is depicted on page 22.

Instead of an inverter, one previous-model OutBack controller (FLEXmax or MX Series) can be networked with
the FLEXmax 100 under the same conditions as above.

NOTE
: Multiple OutBack inverters cannot be networked with this charge controller.

The FN-DC can be networked with one or more FLEXmax 100 controllers under the following conditions:
~ No OutBack inverters are on the network
~ No previous-model OutBack charge controllers are on the network
~ No devices are connected to the CAT5 port on the system display

The CAT5 port on the system display can be used if the network is limited to one or more FLEXmax 100
controllers. No other OutBack devices can be present.

Any devices connected to the
A
UX
+ and
A
UX
– terminals should be electrically isolated. (Examples include, but
are not limited to, coil relays, optical isolators, or fans.) This can be ignored if no devices are connected to the
HUB/Display port.
Positive-Ground Non-Networked Devices
Non-networked devices provide information individually instead of using a HUB communications manager
or a single system display. This definition also applies to devices which work in common with a
networked system but do not communicate with it.
The restrictions under “Positive-Ground Networked Devices” do not apply when using the FLEXmax 100
in a positive-ground system with non-networked devices. For example:

The system display CAT5 port can be used with both the FLEXmax 100 and an inverter if the system display is
plugged directly into the FLEXmax 100.

Multiple inverters (for independent loads, not stacked) can be used if they are not connected to the HUB
communications manager.
NOTE: Other, non-OutBack devices may have their own restrictions.

OutBack Power FLEXmax 100 Specifications

General

Brand	OutBack Power
Model	FLEXmax 100
Category	Controller
Language	English