ABB ACS880-104

STO signal forwarding output to next inverter module (if
present)
STO OUT
X51
FE GND 24V GND 24V
STO signal forwarding output to next
inverter module (if present)
STO IN
X52
FE GND 24V GND 24V
STO signals from BCU control unit
STO signals from BCU control unit
9. Connect an ACS-AP-x control panel to X13 on the BCU control unit.
10. If the modules are equipped with option +C183 (heating elements), connect a
230/115 V AC (50/60 Hz) supply to X50:7…8.
156 Electrical installation