FUJI AS-Interface_AS-i Safety at Work Safety at Work

Can transfer safety-related signals and I/O signals over a single bus.

AS-Interface Safety at Work (AS-i Safety) is an open network that can be added to existing AS-i systems to support EN954-1 category 4 (the highest safety class). With the globalization
of both enterprises and standards (e.g., JIS), there is an increasing worldwide tendency to attach greater importance to safety in order to prevent labor accidents caused by machines.

AS-i Safety makes it possible to unify the safety components that handle all binary signals.

Examples:

Emergency pushbutton switches, safety door switches, safety limit switches, safety area sensors, and output circuit configurations.

The simultaneous operation of a number of safety components is possible over standard AS-i cable.

No safety PLC or special master is required for AS-i Safety.

Quickly and easily expands existing systems.

Safety signals can be grouped.

System diagnosis is possible through a standard AS-i master and standard PLC.

Supports up to EN954-1 category 4 (ISO 13849-1/JIS B9705-1).

Functional safety: Supports up to SIL 3 (IEC 61508)

High speed with a maximum response time of 40ms.

Approved by TÜV and BIA (Institution for Statutory Accident Insurance and Prevention in Germany).

Compatible with all AS-i components (IEC 62026-2 and EN 50295).

The standard AS-i protocol is used to transfer safety signals.

Connects to up to 30 safety slaves. (The number of safety slaves varies with the programming in the safety monitor.)

Allows setting of stop categories 0 and 1 (EN 60204-1).

Conforming to ISO13849-1 and EN954 -1, the components satisfy the requirements of safety guideline of SEMI standard, an international standard in semiconductor industry. Thus, they can be used for semiconductor manufacturing equipment

SEMI S2-0703a:	Safety Guideline for Environment surrounding Semiconductor Manufacturing Equipment and Health
SEMI S22-1103:	Safety Guideline for Electrical Designing for Semiconductor Manufacturing Equipment

Safety monitor
(KK04-119)

Safety slave
(KK03-039)

Emergency stop pushbuttons
(KK05-001)

AS-i Safety added to the standard AS-i system allows the transmission of safety signals.
The safety monitor receives a signal from each safety slave in a cycle. The receiving signal continuously changes according to the defined algorithm. If a fault or alarm condition occurs and no signal is received, the safety monitor automatically switches off via the 2-channel operating circuit after waiting a maximum of 40 ms. Safety-related signals can be grouped when multiple safety monitors are installed on a network. It is also possible to view safety-related events via a human machine interface, etc. on a display.

Safety network easily configured with safety monitor and safety slaves.

The user can eliminate the conventional wiring of the safety components in his system. This results in reduced control cabinet volumes, further reduced installation time and reduction of possible sources of mistakes.

The assignment of the safety slaves to the enable circuits in the safety monitor is freely configurable. Several monitors can be operated in one AS-Interface network. Numerous functions can be configured in the monitor: E-STOP, Stop Category 0 and 1, two-hand operation, door locking, contactor / valve control and restart interlock.

The diagnostic capability of the AS-Interface system allows the source of the E-STOP signal to be localized. The AS-Interface system can in case of failure provide information about the type and location of the fault. In this way the AS-Interface helps to minimize downtime.

•	Savings over conventional wiring
•	Reduction of cabling and installation costs
•	An error-safe programmable controller is not necessary
•	High system flexibility thanks to the easy and fast expandability of existing systems, easy retrofitting
•	Safety signals are incorporated into the system diagnostics
•	Standardized AS-Interface technique means easy system design
•	Combination of Safety at Work and standard AS-Interface System in one network
•	Safety and non-safety on one bus
•	Safety signals can be grouped
•	Approved up to Category 4 per EN 954 – 1
•	Approved up to SIL3 per IEC 61508
•	TÜV and BIA certified
•	Safety at Work is easy to retrofit
•	Monitor works as a multifunctional safety relay
•	Diagnostic of Safetysignals by the connection to the PLC