Connectors X50 - ABB ACS880-104 Hardware Manual

Connectors X50...X53
R8i modules contain a power supply (BDPS) that provides 24 V DC for the circuit boards
of the module. The BDPS is powered internally from the DC link. An auxiliary voltage of
230 V AC (standard) or 115 V AC (option +G304) can optionally be fed to X50 (X50:4 and
X50:5) to power the BDPS even when the DC link is not live. The 24 V DC voltage
provided by the BDPS is available on X53, and can be used to power the BCU control unit
of a single R8i inverter module.
Note: With an inverter unit consisting of parallel-connected R8i modules, it is strongly
recommended to use an external 24 V DC supply to power the BCU control unit.
If present, the heating element (option +C183) and direct-on-line cooling fan (option
+C188) must also be supplied by auxiliary voltages through X50.
If the Safe torque off (STO) function is used, STO OUT on the BCU control unit is wired to
X52 (STO IN); see chapter
module forwards the STO signals to the X52 connector of the next module (if present).
If the Safe torque off function is not used, the "24V" inputs on X52 must be connected to
+24 V (X53, for example) on each inverter module. X51 is to be left unconnected.Note: As
a factory standard, Safe torque off is disabled by a jumper connection between connectors
X52 and X53.
X50
The Safe torque off function
# Description
9 Not in use
8 N
115/230 V AC (50/60 Hz) input for optional heating element (option +C183)
7 L
6 Not in use
5 N Optional 230 V AC 50 Hz input for internal power supply (BDPS)
4 L (115 V AC 60 Hz with option +G304)
3 W 400 V AC (50/60 Hz) supply for optional DOL (direct-on-line) cooling fan
2 V (option +C188).
Note: In modules without +C188, the DOL wiring is present but not in use.
1 U
STO OUT
X51
STO signal forwarding output to next inverter module (if present)
STO IN
X52
STO signals from BCU control unit
24V OUT
X53
24 V DC output (for eg. BCU control unit)
Hardware description 37
(page 309). X51 on the R8i