Related Manuals - ABB ACS880-01 Application Manual

Term
SIL
SS1
SSE
STO
Stop category
T
1
T
M
Zone
Later in this manual, the term "drive" is used to refer to drives, drive modules and inverter
modules.

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Description
Safety integrity level (1...3) (IEC 61508)
Safe stop 1 (IEC/EN 61800-5-2)
Safe stop emergency
Safe torque off (IEC/EN 61800-5-2)
There are three categories of stop functions:
• stop category 0: an uncontrolled stop where power to the machine actuators is re-
moved immediately (STO)
• stop category 1: a controlled stop where the machine actuators have power for
stopping, after which the power is removed (SS1)
• stop category 2: a controlled stop where the machine actuators continue to have
power SS2).
Proof test interval. Defines the probabilistic failure rate (PFH or PFD
function or subsystem. Performing a proof test at a maximum interval of T
to keep the SIL capability valid. The same interval must be followed to keep the PL
capability (EN ISO 13849) valid. Note that any T
as a guarantee or warranty.
Mission time: the period of time covering the intended use of the safety function/device.
After the mission time elapses, the safety device must be replaced. Note that any T
values given cannot be regarded as a guarantee or warranty. (EN ISO 13849-1)
Potentially explosive atmosphere. Hazardous areas are divided into zones, based on
the frequency and duration of the occurrence of an explosive atmosphere. (EN/IEC
60079)
Introduction 13
) for the safety
avg
1
values given cannot be regarded
1
Code
3AUA0000078093
3AUA0000128301
3AUA0000138495
3AXD50000025169
3AXD50000034664
3AXD50000274444
3AXD50000028613
3AXD50000045932
3AXD50000045933
3AXD50000022021
3AUA0000102324
3AXD50000048634
3AUA0000104271
3AXD50000045610
3AUA0000085967
3AUA0000098062
is required
M