Cooling fans
The cooling fan unit at the base of the inverter module contains two DC fans. The fans are
PWM-controlled according to an internal temperature measurement. The fan carriage can
be easily removed for fan replacement, or to allow access to the output cable connections
at the back of the cubicle.
The inverter module also has a small fan ventilating the circuit board compartment inside
the module. The fan can be serviced without removing the inverter module from the cabinet.
Control electronics
Inverter units consisting of one or several R8i modules employ a separate control unit (BCU)
that contains the BCON board with basic I/Os and slots for optional I/O modules. A fiber
optic link connects the BCU to each inverter module. Any safety circuits utilizing the built-in
Safe torque off functionality are connected to the BCU. The forwarding connector of the
BCU is wired to the inverter module(s).
The control electronics are typically located in a 300 mm wide control cubicle (DCU), which
also may contain components of the auxiliary voltage circuit and optional features such as
relays and circuit breakers. The cubicle can also contain the control equipment of another
inverter unit. A 400 mm wide cubicle is optionally available.
Cabinet layout
1…3 inverter modules may be installed in one cubicle. The width of the cubicle is 400, 600
or 800 mm respectively. Each module is equipped with dedicated DC fuses; a DC
switch-disconnector is optional. An inverter unit with a switch-disconnector also has a
precharge circuit including a charging switch on the door. When connecting the inverter unit
to the DC bus, the charging switch is closed first. After the precharging completes, the DC
switch-disconnector can be closed and the charging switch opened.
The picture below presents a cubicle with two R8i inverter modules with shrouding removed.
The top compartment of the cubicle is shown with and without optional DC
switch-disconnector and charging components.
28 Hardware description
Summary of Contents for ACS880-107
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 107 inverter units Hardware manual ...
Page 2: ......
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Page 10: ...10 ...
Page 64: ...2 4 5 6 7 8 11 10 3 a b a b b 1 5 a 64 Electrical installation ...
Page 69: ...Electrical installation 109 5 6 4 3 Electrical installation 69 11 ...
Page 70: ...7 a b d c 110 Electrical installation 7 8 8 8 9 9 70 Electrical installation ...
Page 75: ...2 11 b PE 10 7 5 6 8 a 360 grounding detail Electrical installation 75 11 ...
Page 89: ...With FDPI 02 modules OPEN TERMIN ATED 1 1 2 2 OPEN TERMINATED 3 Electrical installation 89 11 ...
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Page 110: ...4 5 6 7 8 6 10 10 110 Maintenance ...
Page 118: ...2 3 7 9 a a c c c 6 8 b b d d 11 e e 118 Maintenance ...
Page 121: ...7 a b d c 110 Electrical installation 7 8 8 8 9 9 Maintenance 121 ...
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Page 154: ...154 ...
Page 155: ...Circuit diagrams Refer to the circuit diagrams delivered with the unit 9 Circuit diagrams 155 ...
Page 156: ...156 ...
Page 159: ... Dimension drawing 400 mm wide cubicle R1i R4i 400 mm R6i R7i Dimensions and weights 159 ...
Page 161: ... Dimension drawing R8i without C128 or H353 bottom cable exit Dimensions and weights 161 ...
Page 162: ... Dimension drawing R8i without C128 or H353 top cable exit 162 Dimensions and weights ...
Page 163: ... Dimension drawing 2 R8i without C128 or H353 bottom cable exit Dimensions and weights 163 ...
Page 164: ... Dimension drawing 2 R8i without C128 or H353 top cable exit 164 Dimensions and weights ...
Page 165: ... Dimension drawing 3 R8i without C128 or H353 bottom cable exit Dimensions and weights 165 ...
Page 166: ... Dimension drawing 3 R8i without C128 or H353 top cable exit 166 Dimensions and weights ...
Page 167: ... Dimension drawing drive control unit DCU 300 mm Dimensions and weights 167 ...
Page 169: ...Inverter module cubicle with one R8i module top cable exit Dimensions and weights 169 ...
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