Maintenance
After the operation of the circuit is validated at start-up, the STO function shall be maintained
by periodic proof testing. In high demand mode of operation, the maximum proof test interval
is 20 years. In low demand mode of operation, the maximum proof test interval is 5 or 2
years; see section
. It is assumed that all dangerous failures of the
STO circuit are detected by the proof test. To perform the proof test, do the
.
Note:
See also the Recommendation of Use CNB/M/11.050 (published by the European
co-ordination of Notified Bodies) concerning dual-channel safety-related systems with
electromechanical outputs:
• When the safety integrity requirement for the safety function is SIL 3 or PL e (cat. 3 or
4), the proof test for the function must be performed at least every month.
• When the safety integrity requirement for the safety function is SIL 2 (HFT = 1) or PL d
(cat. 3), the proof test for the function must be performed at least every 12 months.
The STO function of the drive does not contain any electromechanical components.
In addition to proof testing, it is a good practice to check the operation of the function when
other maintenance procedures are carried out on the machinery.
Include the Safe torque off operation test described above in the routine maintenance
program of the machinery that the drive runs.
If any wiring or component change is needed after start up, or the parameters are restored,
do the test given in section
Validation test procedure (page 223)
.
Use only spare parts approved by ABB.
Record all maintenance and proof test activities in the machine logbook.
■
Competence
The maintenance and proof test activities of the safety function must be carried out by a
competent person with adequate expertise and knowledge of the safety function as well as
functional safety, as required by IEC 61508-1 clause 6.
226 The Safe torque off function
Содержание ACS880-14
Страница 1: ...ABB INDUSTRIAL DRIVES ACS880 14 drive modules 132 400 kW 200 400 hp Hardware manual...
Страница 2: ......
Страница 4: ......
Страница 14: ...14...
Страница 24: ...24...
Страница 30: ...30...
Страница 54: ...54...
Страница 64: ...64...
Страница 98: ...98...
Страница 114: ...With twin connectors in the control panel holder 1 2 3 1 114 Electrical installation...
Страница 115: ...With FDPI 02 modules OPEN TERMIN ATED 1 1 2 2 OPEN TERMINATED 3 Electrical installation 115 11...
Страница 142: ...4 5 6 3 3 1 1 1 1 2 142 Installation example with full cabling panels option H381...
Страница 150: ...150 Installation example with full cabling panels option H381...
Страница 156: ...156...
Страница 204: ...Standard configuration 204 Dimension drawings...
Страница 205: ...Location of power cable connection terminals with options H370 H356 3AXD50000038012 Dimension drawings 205...
Страница 206: ...Drive module with options 0B051 H356 0H371 206 Dimension drawings...
Страница 207: ...Configuration with option H381 3AXD50000323210 Dimension drawings 207...
Страница 208: ...LCL filter module 208 Dimension drawings...
Страница 212: ...External control unit 3AXD50000011687 212 Dimension drawings...
Страница 230: ...Declaration of conformity 230 The Safe torque off function...
Страница 236: ...Combi screw M8 30 Hex 20 N m 14 75 lbf ft Tapping screw M6 12 Torx T30 Hex 8 N m 71 lbf in 8 10 9 11 12 236...
Страница 241: ...241...
Страница 246: ...246...