ABB ACS880-607LC, Hardware Manual, Page: 21 / 108

Coolant in (a) and out (b) connectors 3
Handle 4
Fiber optic connectors 5
Quick connector (AC connection) (the counterpart fastened to the cabinet behind the module) 6
Terminal block X50 (auxiliary power input for internal boards) 7
Terminal block X51 and X52 (Safe torque off in inverter modules only) 8
Terminal block X53 (24 V DC power output) 9
Auxiliary voltage selector (115 or 230 V) 10
Unpainted fastening hole. The grounding point (PE) between module frame and cabinet frame. 11
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Coolant connectors
The coolant pipe inlet and outlet connectors are located at the bottom front of the module.
The connectors are for 16/13 millimeter PA (polyamide) pipe.
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Connectors X50…X59
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.
Note: The Safe torque off (STO) safety function is only implemented in inverter units.
Therefore, the STO function can not be used in supply, brake and converter units. In supply,
brake and converter units, de-energizing any connection of STO IN (X52) connector stops
the unit. Note that this stop in supply or brake module is not safety related and must not be
used for safety function purposes.
The “24V” inputs on X52 must be connected to +24 V (on connector X53, for example) on
each module. On a new module, a jumper wire set installed at the factory makes this
connection.
Operation principle and hardware description 21