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Planning the electrical installation
67
Switching the motor power supply from drive to direct-on-line
1. Stop the drive and the motor with the drive control panel (drive in the local control
mode) or the external stop signal (drive in the remote control mode).
2. Open the main contactor of the drive with S11.
3. Switch the motor power supply from the drive to direct-on-line with S40.
4. Wait for 10 seconds to allow the motor magnetization to die away.
5. Start the motor with S41.
Switching the motor power supply from direct-on-line to drive
1. Stop the motor with S42.
2. Switch the motor power supply from direct-on-line to the drive with S40.
3. Close the main contactor of the drive with switch S11 (-> turn to position ST for
two seconds and leave to position 1).
4. Start the drive and the motor with the drive control panel (drive in the local control
mode) or the external start signal (drive in the remote control mode).
Protecting the contacts of relay outputs
Inductive loads (relays, contactors, motors) cause voltage transients when switched
off.
The relay contacts on the JCU control unit are protected with varistors (250 V)
against overvoltage peaks. In spite of this, it is highly recommended to equip
inductive loads with noise attenuating circuits (varistors, RC filters [AC] or diodes
[DC]) in order to minimize the EMC emission at switch-off. If not suppressed, the
disturbances may connect capacitively or inductively to other conductors in the
control cable and form a risk of malfunction in other parts of the system.
Install the protective component as close to the inductive load as possible. Do not
install protective components at the relay outputs.
Summary of Contents for ACS850-04 series
Page 1: ...ABB machinery drives Hardware manual ACS850 04 drive modules 160 to 560 kW 200 to 700 hp ...
Page 4: ......
Page 12: ...Table of contents 12 ...
Page 20: ...Safety instructions 20 ...
Page 26: ...Introduction to the manual 26 ...
Page 81: ...Installation 81 Assembly drawing frame G1 3AUA0000132078 ...
Page 82: ...Installation 82 Assembly drawing frame G2 3AUA0000132062 ...
Page 83: ...Installation 83 Assembly drawing air baffles 3AUA0000132062 ...
Page 92: ...Installation 92 3 6a 6b 5 4 8 4 8 6a 6b 7a 7b 7b ...
Page 112: ...Installation checklist 112 ...
Page 114: ...Start up 114 ...
Page 116: ...Fault tracing 116 ...
Page 140: ...Technical data 140 ...
Page 142: ...Dimension drawings 142 Frame G1 Drive module dimensions ...
Page 143: ...Dimension drawings 143 Frame G1 Drive module dimensions with optional cabling panels H381 ...
Page 144: ...Dimension drawings 144 ...
Page 145: ...Dimension drawings 145 Frame G1 Cabling panels H383 installed into a Rittal TS 8 cabinet ...
Page 146: ...Dimension drawings 146 Frame G2 Drive module dimensions ...
Page 147: ...Dimension drawings 147 Frame G2 Drive module dimensions with optional cabling panels H381 ...
Page 148: ...Dimension drawings 148 ...
Page 149: ...Dimension drawings 149 Frame G2 Cabling panels H383 installed into a Rittal TS 8 cabinet ...
Page 150: ...Dimension drawings 150 Frames G1 and G2 Bottom plate 3AUA0000082240 ...
Page 151: ...Dimension drawings 151 Frames G1 and G2 Air baffles 3AUA0000138986 ...
Page 152: ...Dimension drawings 152 ...
Page 162: ...du dt filters 162 ...
Page 164: ...3AUA0000081249 Rev C EN 2013 04 11 Contact us www abb com drives www abb com drivespartners ...