Replacing Acs800 R8I Modules With Acs880 R8I Modules - ABB ACS880-104 Hardware Manual

154 Electrical installation

Replacing ACS800 R8i modules with ACS880 R8i modules

ACS880 R8i modules can be ordered with option +P942 for mechanical compatibility with
ACS800 R8i modules. A dimension drawing is presented on
+P942 (page 349).
The following procedure explains the additional wiring changes that are required.
WARNING!
Repeat the steps described in section Electrical safety precautions. The
complete safety instructions are given in Safety instructions for ACS880
multidrive cabinets and modules (3AUA0000102301 [English]). Ignoring
the instructions can cause physical injury or death, or damage to the
equipment.
1. Replace the inverter module(s).
Note:
The DC fuses (F11.xx) and common mode filters (R11.xx) at the input of each inverter
module need not be changed if the output currents of the inverter module(s) remain
unchanged.
2. If needed, connect an auxiliary voltage supply of 230 V AC 50 Hz (standard) or 115 V AC
60 Hz (with option +G304) to X50:4...5 on the module to power the BDPS (internal
power supply of the module) even when the DC link is not live.
3. Replace the RDCU control unit with a BCU-x2 inverter control unit (with a sufficient
number of inverter module connections). Connect the control unit to a 24 V DC power
supply. (An external power supply is recommended for an inverter unit consisting of
parallel-connected modules; with a single-module configuration, connectors X53:1 and
X53:2 on the module can be used.)
4. Connect the BCU to the inverter module(s) using fiber optic cables. In case of
parallelconnected modules, remove the existing APBU branching unit.
5. If the module is equipped with option +C188 (direct-on-line cooling fan), connect a
3-phase 400 V 50/60 Hz (or 320 V 60 Hz) supply to X50:1...3.
6. If the inverter unit is equipped with a DC switch/disconnector and charging controller,
connect terminals V50 and V60 of the inverter module to the charging controller using
fiber optic cables.
Note:
With an ACS880 R8i module used with the ACS800 charging circuit, only one charging
cycle in five minutes is allowed.
Frame R8i with option