Morningstar TS-MPPT-60 wiring diagram

The TS-MPPT-60 is the 60 A, 150 V-input TriStar MPPT for 12/24/48 V batteries. It has Ethernet and EIA-485 alongside RS232 and MeterBus. It is not the PWM TriStar, the TS-MPPT-45, or the meter-equipped 60M. The catalog's former photograph showed a 45 A label and was removed.

The specifications, printed pages 66–67 distinguish nominal output power (800/1600/3200 W) from recommended maximum array input power (1100/2100/4200 W) at 12/24/48 V. Array Voc must stay below 150 V at the coldest module temperature.

PV + / PV − and BATT + / BATT − map to Solar+, Battery+, and the two common-negative terminals in the wiring compartment. There is no high-current load output. The symbol omits protective grounding, the remote temperature sensor, battery-voltage sense, DIP switches, and communications connections.

The four power terminals take 14–2 AWG / 2.5–33.6 mm² conductors and tighten to 5.65 N·m. This is a terminal range, not a recommendation to use its smallest wire at 60 A. Follow the manual's temperature-adjusted ampacity and voltage-drop tables.

The protection instructions, printed pages 30–31 specify 75 or 80 A battery protection for the 60 A model and an 80 A maximum PV input protection rating, subject to the array calculation. Protection must have adequate DC interrupt capacity; the manual gives minimums of 2/3/5 kA for 12/24/48 V systems. There are no internal disconnects or fuses to substitute for these external devices.

With both disconnects open, verify wiring and polarity. Energize the battery first, confirm the startup LEDs, then close the solar disconnect. Shut down solar before disconnecting the battery. The controller requires a battery to operate and reverse polarity can damage it.

Set DIP switches for battery voltage, the approved charging profile, and equalization behavior before startup. The standard switch profiles target lead-acid batteries; do not select one merely because a lithium bank has the same nominal voltage. Custom settings need battery-specific review and BMS coordination.

Install the included remote temperature sensor when temperature-compensated charging is required: there is no internal ambient sensor to provide it. Optional voltage-sense wiring improves regulation at the battery and requires protection on its positive lead. The manual gives conflicting small-signal screw torques in its installation and specification sections; confirm that value with Morningstar rather than borrowing the power-terminal torque.

Mount indoors, vertically, with 150 mm clearance above and below, outside a compartment containing vented batteries. Protect the wiring box from water and accidental contact. Ethernet switch 8 can inhibit TCP/IP setting changes but does not replace appropriate network access control.