Qualified Personnel; Lifecycle; Installation Of Safety Modules - ABB AC500-S Safety User Manual

Overview of AC500-S safety PLC

Installation of safety modules

(1) - SIL (safety integrity level) according to IEC 61508
(2) - SILCL (safety integrity level claim limit) according to IEC 62061
(3) - PL (performance level) according to ISO 13849-1
(4) - Diagnostic coverage, % (refer to ISO 13849-1)
(5)
- Mean time to failures (years) dangerous according to ISO 13849-1
(6)
- Probability of dangerous failure per hour according to IEC 62061
(7)
- Probability of dangerous failure per hour according to IEC 61508 (High demand mode)
(8)
- Average probability of failure to perform its design function on demand according to
(9)
- Proof test interval - mission time - lifetime years
(10)
- SFF (safe failure fraction), % according to IEC 61508
- b (beta factor), % for common cause failures according to IEC 61508
(11)

2.5 Qualified personnel

AC500-S safety PLC may only be set up and used in conjunction with this documentation.
Safety application engineer of AC500-S safety PLC
Commissioning and operation of AC500-S safety PLC may only be performed by the qualified
personnel who is authorized to commission safety devices, systems and circuits in accordance
with established functional safety practices and standards.
The following basic knowledge of AC500 system is required to correctly understand this
AC500-S safety user manual:
● AC500 automation system
● Automation Builder / Control Builder Plus programming environment (system configuration
and programming in ST, LAD and FBD programming languages).

2.6 Lifecycle

All AC500-S safety modules have a maximum life of 20 years. This means that all AC500-S
safety modules shall be taken out of service or replaced by new AC500-S safety modules at
least one week before the expiry of 20 years (counted from the date of delivery by ABB).
2.7 Installation of safety modules
The following rules shall be taken into account for installing safety modules:
● The installation must be done according to the documentation with appropriate facilities and
tools.
● The installation of the devices may be done only in de-energized condition and carried out
by the qualified personnel.
18
IEC 61508 (Low demand mode)
DANGER!
The average temperature (MTBF calculation base) for both the extended tem-
perature range (-40 ... +70 °C) as well as for normal temperature range
(0 ... +60 °C) is defined to +40 °C.
Ensure that average operating temperature for used AC500-S modules does
not exceed +40 °C.
3ADR025091M0208, 12, en_US 2020/06/19