14
The Safe torque off function
Contents of this chapter
This chapter describes the Safe torque off (STO) function of the drive and gives
instructions for its use.
Description
The Safe torque off function can be used, for example, as the final actuator device of
safety circuits that stop the drive in case of danger (such as an emergency stop circuit).
Another typical application is a prevention of unexpected start-up function that enables
short-time maintenance operations like cleaning or work on non-electrical parts of the
machinery without switching off the power supply to the drive.
When activated, the Safe torque off function disables the control voltage of the power
semiconductors of the drive output stage (A, see the diagrams below), thus preventing
the drive from generating the torque required to rotate the motor. If the motor is running
when Safe torque off is activated, it coasts to a stop.
The Safe torque off function has a redundant architecture, that is, both channels must
be used in the safety function implementation. The safety data given in this manual is
calculated for redundant use, and does not apply if both channels are not used.
The Safe torque off function complies with these standards:
Name
Standard
Safety of machinery – Electrical equipment of machines – Part 1:
General requirements
IEC 60204-1:2016
EN 60204-1:2018
The Safe torque off function 273
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 ...