Use
1. Open the activation switch, or activate the safety functionality that is wired to the
STO connection.
2. The STO inputs on the drive control unit de-energize, and the control unit cuts off
the control voltage from the output IGBTs.
3. The control program generates an indication as defined by parameter
31.22
(see
the firmware manual of the drive).
4. The motor coasts to a stop (if running). The drive will not restart while the activation
switch or safety relay contacts are open.
5. Deactivate the STO by closing the activation switch, or resetting the safety
functionality that is wired to the STO connection.
6. Reset any faults before restarting.
WARNING!
The Safe torque off function does not disconnect the voltage of the main and
auxiliary circuits from the drive. Therefore maintenance work on electrical parts
of the drive or the motor can only be carried out after isolating the drive from the
supply and all other voltage sources.
WARNING!
The drive cannot detect or memorize any changes in the STO circuitry when the
drive control unit is not powered. If both STO circuits are closed and a level-type
start signal is active when the power is restored, it is possible that the drive starts
without a fresh start command. Take this into account in the risk assessment of
the system.
This is also valid when the drive is only powered by a CMOD-xx multifunction
extension module.
WARNING!
(With permanent magnet or synchronous reluctance [SynRM] motors only)
In case of a multiple IGBT power semiconductor failure, the drive can produce an
alignment torque which maximally rotates the motor shaft by 180/
p
degrees (with
permanent magnet motors) or 180/2
p
degrees (with synchronous reluctance
[SynRM] motors) regardless of the activation of the Safe torque off function.
p
denotes the number of pole pairs.
Notes:
•
If a running drive is stopped by using the Safe torque off function, the drive will cut
off the motor supply voltage and the motor will coast to a stop. If this causes danger
284 The Safe torque off function
Summary of Contents for ACQ580-07
Page 1: ... ABB DRIVES FOR WATER ACQ580 07 Hardware manual ...
Page 2: ......
Page 4: ......
Page 8: ...4 Update notice ...
Page 20: ...16 ...
Page 26: ...Measuring points of frames R6 to R9 are shown below PE L1 L2 L3 22 Safety instructions ...
Page 32: ...28 ...
Page 38: ...34 ...
Page 66: ...62 ...
Page 69: ...Mechanical installation 65 ...
Page 73: ... Mechanical installation 69 ...
Page 75: ...Declaration of Conformity Mechanical installation 71 ...
Page 108: ...104 ...
Page 133: ...Electrical installation 129 ...
Page 142: ...138 ...
Page 156: ...152 ...
Page 162: ...158 ...
Page 171: ...Maintenance 167 ...
Page 177: ...3 4 Maintenance 173 ...
Page 184: ...14 13 15 16 17 Remove the flange 180 Maintenance ...
Page 187: ...3 4 5 6 Remove the mounting plate Maintenance 183 ...
Page 189: ...8 Disconnect the drive module output busbars M12 70 N m 52 lbf ft 7 8 Maintenance 185 ...
Page 193: ...4 5 3 6 Remove the mounting plate Maintenance 189 ...
Page 195: ...8 Disconnect the drive module output busbars M12 70 N m 52 lbf ft 7 8 Maintenance 191 ...
Page 218: ...Frame R6 Input and motor cable terminal dimensions option F289 DET A 214 Technical data ...
Page 233: ...Frame R9 Input and motor cable terminal dimensions option F289 Technical data 229 ...
Page 257: ...13 Dimension drawings Example dimension drawings are shown below Dimension drawings 253 ...
Page 258: ...Frames R6 and R7 IP21 UL Type 1 254 Dimension drawings ...
Page 259: ...Frames R6 and R7 B054 IP42 UL Type 1 Filtered Dimension drawings 255 ...
Page 260: ...Frames R6 and R7 B055 IP54 UL Type 12 256 Dimension drawings ...
Page 261: ...Frames R6 and R7 H351 and H353 top entry and exit Dimension drawings 257 ...
Page 262: ...Frames R6 and R7 F289 258 Dimension drawings ...
Page 263: ...Frames R6 and R7 F289 H351 H353 Dimension drawings 259 ...
Page 264: ...Frames R8 and R9 IP21 UL Type 1 260 Dimension drawings ...
Page 265: ...Frames R8 and R9 B054 IP42 UL Type 1 Filtered Dimension drawings 261 ...
Page 266: ...Frames R8 and R9 B055 IP54 UL Type 12 262 Dimension drawings ...
Page 267: ...Frames R8 and R9 H351 and H353 top entry and exit Dimension drawings 263 ...
Page 268: ...Frames R8 and R9 F289 264 Dimension drawings ...
Page 269: ...Frames R8 and R9 F289 H351 H353 Dimension drawings 265 ...
Page 295: ... Declaration of conformity The Safe torque off function 291 ...
Page 296: ...292 ...
Page 302: ...298 ...
Page 309: ...CMOD 01 multifunction extension module external 24 V AC DC and digital I O 305 ...
Page 310: ...306 ...
Page 316: ...312 CMOD 02 multifunction extension module external 24 V AC DC and isolated PTC interface ...
Page 322: ...318 ...