Circuit examples DX581-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 DX581-S module are presented below. Note, that electrical connections presented for DI581-S safety input channels are also valid for DX581-S safety input channels.

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 DX581-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].

NOTICE

Whenever DC = High is used in the circuit examples with safety digital outputs, the following measure from ISO 13849-1⮫ [10] is used with the DX581-S module: Cross monitoring of output 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 outputs, any of the measures for output devices with DC ³ 90 % can be used from ISO 13849-1⮫ [10].

DANGER

The reachable SIL (IEC 61508), max. SIL (IEC 62061) and PL (ISO 13849-1) levels for safety outputs of DX581-S module are only valid if the parameter Detection = "On". If the parameter Detection = "Off" then contact ABB technical support to obtain proper reachable SIL, max. SIL and PL levels.

Relay

Internal output channel test	Yes
Max. SIL / PL ¹⁾	Max. SIL 1 / PL c
SIL²⁾	SIL 2
Max. SIL / PL ³⁾	Max. SIL 2 / PL d
SIL⁴⁾	SIL 3

03.04.049_Circuit example DX581-S-01 — Fig. 441: Circuit example DX581-S, relay

¹⁾: Without readback contact: 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) MTTFd = High, DC = 0
²⁾: Without readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required) ➔ without error exclusion (you can reach higher level up to SIL 3 with error exclusion)
³⁾: With readback contact: 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) MTTFd = High, DC = Medium
⁴⁾: With readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required)

2 relays

Internal output channel test	Yes
Max. SIL / PL ¹⁾	Max. SIL 1 / PL c
SIL²⁾	SIL 3
Max. SIL / PL ³⁾	Max. SIL 3 / PL e
SIL⁴⁾	SIL 3

03.04.050_Circuit example DX581-S-02 — Fig. 442: Circuit example DX581-S, 2 relays

¹⁾: Without readback contact: 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) MTTFd = High, DC = 0
²⁾: Without readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required)
³⁾: With readback contact: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) MTTFd = High, DC = High
⁴⁾: With readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required)

Device with transistor input (1-channel)

Internal output channel test	Yes
Max. SIL / PL ¹⁾	Max. SIL 1 / PL c
SIL²⁾	SIL 2
Max. SIL / PL ³⁾	Max. SIL 2 / PL d
SIL⁴⁾	SIL 3

03.04.051_Circuit example DX581-S-03 — Fig. 443: Circuit example DX581-S, device with transistor input (1-channel)

¹⁾: Without readback contact: 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) MTTFd = High, DC = 0
²⁾: Without readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required) ➔ without error exclusion (you can reach higher level up to SIL 3 with error exclusion)
³⁾: With readback contact: 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) MTTFd = High, DC = Medium
⁴⁾: With readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required)

Device with transistor input (2-channel)

Internal output channel test	Yes
Max. SIL / PL ¹⁾	Max. SIL 1 / PL c
SIL²⁾	SIL 3
Max. SIL / PL ³⁾	Max. SIL 3 / PL e
SIL⁴⁾	SIL 3

03.04.052_Circuit example DX581-S-04 — Fig. 444: Circuit example DX581-S, device with transistor input (2-channel)

¹⁾: Without readback contact: 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) MTTFd = High, DC = 0
²⁾: Without readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required)
³⁾: With readback contact: Max. SIL (IEC 62061) / max. reachable PL (ISO 13849-1) MTTFd = High, DC = Medium
⁴⁾: With readback contact: Max. reachable SIL acc. IEC 61508 (type A components are required)

Error detection on the output wire of lamp, valve, etc.

Internal output channel test

Yes

Max. SIL / PL ¹⁾

Max. SIL 2 / PL d

Additional dynamic application-specific tests for wiring are required depending on the application and required wiring error detection (short-circuit to 24 V DC, cross-talk error on safety digital outputs, etc.).

SIL²⁾

SIL 3

03.04.054_Circuit example DX581-S-05 — Fig. 445: Circuit example DX581-S, error detection on the output wire of lamp, valve, etc.

¹⁾: 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) MTTFd = High, DC = Medium
²⁾: Max. reachable SIL acc. IEC 61508 (type A components are required)

Application example