Outback Power Systems MX60 Installation And User Manual page 6

Connections
The wiring terminals for the MX60 charge controller are shown in Figure 3. There is no required connection sequence.
Figure 3 MX60 wiring area and wiring terminals
The large terminal block in the center is for PV+, PV-, BAT- and BAT+. The aluminum terminal on the right side of the
chassis is the equipment ground. The equipment-grounding terminal can mounted on the outside of the enclosure if
desired, although normally the equipment-grounding conductors will be routed in the same conduits with the input and
output circuit conductors. If the equipment grounding terminal is moved to the outside, make sure that the star washer is
re-used. This washer is used to penetrate through the paint, thus grounding the chassis. NEC requires the use of an
array disconnect and a battery disconnect. The MX60 can use a 60 amp 125VDC breaker such as the OBDC60 breaker.
All of the large terminals should be torqued to 30 inch pounds. The PV /BAT terminal will accept up to 4AWG wire. The
equipment ground takes up to 2AWG.
An optional MX60 remote battery temperature sensor is connected to the right of the BAT+ terminal in a RJ11 marked "
Battery Temp". This sensor is mounted on one of the batteries using the double back tape included. Battery manufactur-
ers recommended charging voltages are based on 25 o C / 77 o F. Batteries cannot be properly charged without a remote
sensor unless the batteries remain at 70 o F. The OutBack Temp sensor will automatically change voltage up or down
depending on the sensor's temperature. This is especially important in very hot or very cold climates. This is a highly
recommended option.
To the right of the temp sense jack is a small two position terminal block marked AUX. The terminals are marked Ground
and +12V. The terminals are programmable to accomplish an assortment of functions such as load diversion or alarms.
The output current available on this terminal block is 200 milliamps. This is enough to power the coil of a relay or for a
small piezo buzzer or LED indicator. The AUX output is protected internally by an automatic resetting poly fuse.
To the left of the PV+ terminal is an RJ45 jack marked MATE. The MATE is the OutBack remote display panel. Most of
the status that is available on the MX60 is available at the Mate as well. Some triggered events can be accomplished at
the MATE also.
Figure 4 The MATE System Management and Remote Control
CAUTION: It is normal for the PV input voltage input voltage to rise up to a level close to the battery voltage when the
battery is connected and the PV array is disconnected. This is a normal condition for the MX60. The MX60 is designed
for PV input only and will not function properly with other power sources or combinations of PV and other power sources
or in parallel with other charge controllers.
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