Operation principle and hardware description 45
Main disconnecting device [Q1.1]
Depending on the configuration of the drive, the main disconnecting device of the drive is
either a switch-disconnector or a main circuit breaker. Units with a switch-disconnector
also have a main contactor.
The main disconnecting device switches the main supply to the drive on and off. To
disconnect the main supply, turn the switch-disconnector to the 0 (OFF) position, or rack
out the main breaker (whichever device is installed).
WARNING!
The main disconnecting device does not isolate the input power
terminals, AC voltage meters, or the *auxiliary voltage circuit from the power line.
To isolate the auxiliary voltage circuit, open the auxiliary voltage switch (Q21). To
isolate the input power terminals and AC voltage meters, open the main breaker of the
supply transformer.
*With frame 1×R8i + 1×R8i units, the main switch-disconnector [Q1.1] also switches the auxiliary voltage on
and off.
To close the main disconnecting device, auxiliary voltage must be switched on, and the
grounding switch (if present) must be open.
Auxiliary voltage switch [Q21]
The auxiliary voltage switch controls the supply to the auxiliary voltage transformers. The
transformer feeds the control circuits inside the drive such as cooling fans, relays and
measuring equipment. The switch is fitted with fuses.
Note:
Frame 1×R8i + 1×R8i units are not fitted with an auxiliary voltage switch. The
auxiliary voltage is switched on and off by the main disconnecting device [Q1], and
protected by fuse disconnectors F20.1…F20.3.
Grounding (earthing) switch [Q9.x], optional
The grounding switch [Q9.1] (F259) connects the main AC power bus to the PE
busbar.
To close the grounding switch, auxiliary voltage must be switched on, and the main
disconnecting device must be open.
WARNING!
The grounding switch does not ground the input power terminals of
the drive or the auxiliary (control) voltage circuits.
Other devices on the door
•
Voltmeter (G334); comes with a phase selector switch.
Note:
The voltage is
measured on the supply side of the main switch or breaker.
•
AC current meter (G335) on one phase.
Summary of Contents for ACS880-17
Page 1: ...ABB industrial drives Hardware manual ACS880 37 drives ...
Page 3: ......
Page 4: ......
Page 6: ......
Page 16: ...16 ...
Page 30: ...30 Introduction to the manual ...
Page 70: ...70 Mechanical installation ...
Page 105: ...Electrical installation 105 4 5 3 6 7 ...
Page 107: ...Electrical installation 107 5 6 4 3 ...
Page 108: ...108 Electrical installation 7 8 8 ...
Page 109: ...Electrical installation 109 9 10 ...
Page 111: ...Electrical installation 111 2 360 grounding detail a b b 1 5 a 11 b a PE 10 7 5 6 8 ...
Page 117: ...Electrical installation 117 PE 11 8 4 9 11 ...
Page 134: ...134 Control units of the drive ...
Page 140: ...140 Start up ...
Page 142: ...142 Fault tracing ...
Page 154: ...154 Maintenance 4 5 6 7 8 6 10 10 ...
Page 162: ...162 Maintenance 5 6 3 4 7 ...
Page 163: ...Maintenance 163 6 8 7 11 10 9 ...
Page 167: ...Maintenance 167 3 4b 4a 4b 8 ...
Page 185: ...Technical data 185 Declaration of Conformity ...
Page 186: ...186 Technical data ...
Page 196: ...196 Dimensions Dimension drawing examples Frame 1 R8i 1 R8i ...
Page 197: ...Dimensions 197 Frame 1 R8i 1 R8i top cable entry exit H351 H353 ...
Page 198: ...198 Dimensions Frame 1 R8i 1 R8i with brake choppers and resistors D150 D151 ...
Page 199: ...Dimensions 199 Frame 1 R8i 1 R8i with sine output filter E206 ...
Page 200: ...200 Dimensions Frame 2 R8i 2 R8i eg ACS880 37 1110A 3 IP22 ...
Page 201: ...Dimensions 201 Frame 2 R8i 2 R8i eg ACS880 37 1210A 3 IP54 ...
Page 204: ...204 Dimensions Frame 2 R8i 2 R8i with main breaker F255 and top entry top exit H351 H353 1 2 ...
Page 205: ...Dimensions 205 Frame 2 R8i 2 R8i with main breaker F255 and top entry top exit H351 H353 2 2 ...
Page 206: ...206 Dimensions Frame 3 R8i 3 R8i 1 2 ...
Page 207: ...Dimensions 207 Frame 3 R8i 3 R8i 2 2 ...
Page 208: ...208 Dimensions Frame 3 R8i 3 R8i with common motor terminal cubicle H359 1 2 ...
Page 209: ...Dimensions 209 Frame 3 R8i 3 R8i with common motor terminal cubicle H359 2 2 ...
Page 217: ...Dimensions 217 Sine filter E206 cubicle 1000 mm top cable exit ...
Page 221: ...Dimensions 221 Cubicle width 400 mm top cable exit Cubicle width 600 mm bottom cable exit ...
Page 222: ...222 Dimensions Cubicle width 600 mm top cable exit ...
Page 234: ...234 The Safe torque off function ...
Page 244: ...www abb com drives www abb com drivespartners 3AXD50000020437 Rev A EN 2015 02 06 Contact us ...