Circuit examples DI581-S

This is the web edition of the original ‎⮫ AC500-S safety user manual, version 1.3.2. This web edition is provided for quick reference only. The original safety user manual must be used to meet functional safety application requirements.

Examples of electrical connections and reachable SIL (IEC 61508), max. SIL (IEC 62061) and PL (ISO 13849-1) with DI581-S module are presented below.

NOTICE

Whenever DC = High is used in the circuit examples with safety digital inputs, the following measure from ISO 13849-1⮫ [10] is used with DI581-S module: Cross monitoring of input signals and intermediate results within the logic (L), and temporal and logical software monitor of the program flow and detection of static faults and short circuits (for multiple I/O).

Whenever DC = Medium is used in the circuit examples with safety digital inputs, any of the measures for input devices with DC ³ 90 % can be used from ISO 13849-1⮫ [10].

1-channel sensor

Max. SIL / PL ^{1), 2)}	Max. SIL 1 / PL c
SIL³⁾	SIL 2

03.03.030_Circuit example DI581-S-02 — Fig. 452: Circuit example DI581-S, 1-channel sensor

¹⁾: MTTFd = High, DC = 0
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required) ➔ without error exclusion (you can reach higher levels up to SIL 3 with error exclusion)

1-channel OSSD output (with internal tests)

Max. SIL / PL ^{1), 2)}	Max. SIL 1 / PL c
SIL³⁾	SIL 2

03.03.029_Circuit example DI581-S-01 — Fig. 453: Circuit example DI581-S, 1-channel OSSD output (with internal tests)

¹⁾: MTTFd = High, DC = 0
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required) ➔ without error exclusion (you can reach higher levels up to SIL 3 with error exclusion)

2-channel sensor (equivalent)

2-channel evaluation	In DI581-S module
Max. SIL / PL ^{1), 2)}	Max. SIL 2 / PL d
SIL³⁾	SIL 3

03.03.031_Circuit example DI581-S-03 — Fig. 454: Circuit example DI581-S, 2-channel sensor (equivalent)

¹⁾: MTTFd = High, DC = Medium
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2-channel sensor (antivalent)

2-channel evaluation	In DI581-S module
Max. SIL / PL ^{1), 2)}	Max. SIL 2 / PL d
SIL³⁾	SIL 3

03.03.032_Circuit example DI581-S-04 — Fig. 455: Circuit example DI581-S, 2-channel sensor (antivalent)

¹⁾: MTTFd = High, DC = Medium
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2-channel OSSD output (with internal tests)

2-channel evaluation	In DI581-S module
Max. SIL / PL ^{1), 2)}	Max. SIL 3 / PL e
SIL³⁾	SIL 3

03.03.033_Circuit example DI581-S-05 — Fig. 456: Circuit example DI581-S, 2-channel OSSD output (with internal tests)

¹⁾: MTTFd = High, DC = High
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

1-channel sensor with test pulses

Max. SIL / PL ^{1), 2)}	Max. SIL 2 / PL d
SIL³⁾	SIL 3

03.03.034_Circuit example DI581-S-06 — Fig. 457: Circuit example DI581-S, 1-channel sensor with test pulses

¹⁾: MTTFd = High, DC = Medium
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2-channel sensor (equivalent) with test pulses

2-channel evaluation	In safety CPU
Max. SIL / PL ^{1), 2)}	Max. SIL 2 / PL d
SIL³⁾	SIL 3

03.03.035_Circuit example DI581-S-07 — Fig. 458: Circuit example DI581-S, 2-channel sensor (equivalent) with test pulses

¹⁾: MTTFd = High, DC = Medium
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2-channel sensor (equivalent) with test pulses

2-channel evaluation	In DI581-S module
Max. SIL / PL ^{1), 2)}	Max. SIL 3 / PL e
SIL³⁾	SIL 3

03.03.036_Circuit example DI581-S-08 — Fig. 459: Circuit example DI581-S, 2-channel sensor (equivalent) with test pulses

¹⁾: MTTFd = High, DC = High
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2 x OSSD output (with internal tests)

2-channel evaluation	In DI581-S module
Max. SIL / PL ^{1), 2)}	Max. SIL 3 / PL e
SIL³⁾	SIL 3

03.03.037_Circuit example DI581-S-09 — Fig. 460: Circuit example DI581-S, 2 x OSSD output (with internal tests)

¹⁾: MTTFd = High, DC = High
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2 separate sensors with test pulses

2-channel evaluation	In safety CPU
Max. SIL / PL ^{1), 2)}	Max. SIL 2 / PL d
SIL³⁾	SIL 3

03.03.038_Circuit example DI581-S-10 — Fig. 461: Circuit example DI581-S, 2 separate sensors with test pulses

¹⁾: MTTFd = High, DC = Medium
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

2 x 2-channel sensor (antivalent) with test pulses

2-channel evaluation	First in DI581-S module and then in the safety CPU
Max. SIL / PL ^{1), 2)}	Max. SIL 3 / PL e
SIL³⁾	SIL 3

03.03.039_Circuit example DI581-S-11 — Fig. 462: Circuit example DI581-S, 2 x 2-channel sensor (antivalent) with test pulses

¹⁾: MTTFd = High, DC = High
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

Mode switch 1 from 4

Mode switch evaluation	In safety CPU
Max. SIL / PL ^{1), 2)}	Max. SIL 1 / PL c
SIL³⁾	SIL 2

03.03.040_Circuit example DI581-S-12 — Fig. 463: Circuit example DI581-S, mode switch 1 from 4

¹⁾: MTTFd = High, DC = Low
²⁾: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) ➔ without error exclusion (you can reach higher levels up to PL e, max. SIL 3 with error exclusion)
³⁾: Max. reachable SIL acc. IEC 61508 (type A components are required) ➔ without error exclusion (you can reach higher levels up to SIL 3 with error exclusion)