AS-Interface Safety at Work - SCHMERSAL - #9

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R C S OR 9 AS-Interface Safety at Work Note • The installation of different safety areas is possible with numerous safety monitors working alongside each other. The maximum number of safety devices including the safety monitors may not exceed 31 participants. • The allocation of the safety devices to one or more safety monitors is achieved with the help of the configuration software ”asimon“. • The wiring diagram shows the safety monitor ASM E2-R2/R2 with start-pushbuttons and feedback loops. • No safety devices are displayed, because they are installed in the field i.e. on the safety guards itself. The data connection between the safety monitor and the decentralised safety slaves is established via the ASInterface network. • For the operation of AS-Interface Safety at Work system, a standard controller, an ASInterface Master and AS-Interface power supply, must be used in the application. • With the RJ 45 connector the safety monitor is configured and started up. • Start push button A start push button (NO) can optionally be connected to the ASM. With the guard door(s) closed, the enabling paths are then not closed until the start push button has been operated. If neither start button nor feedback circuit are required, then no connections are required to the terminals (1Y1/2, 2Y1/2). • Output expander module For additional contacts by means of more enabling paths and potential-free indication contacts an output expander module is connected to the safety monitor, i.e. to the internal ASM enabling path. For the control of the additional outputs the ASM feedback loop is utilised. Wiring diagram L1 AS-i+ AS-i- 1Y1 K1 K2 L+ M FE 1.14 1.24 2.14 2.24 2.14 2.24 2.32 1.13 1.23 2.13 K5 K5 L1 L2 L3 L1 L2 L3 K7 K7 S1 S2 M1 M2 K6 K6 K8 K8 3 3 K3 K4 1Y2 24 V 2Y1 2Y2 1.32 2.23 AS-i+ AS-i- + 24 VDC + 24 VDC + 24 VDC 0 V N M N M RS 232 RJ 45 ASInterface 0 V Note Further information and details of the safety monitor ASM are available on the asimon- CD-ROM. Note The AS-i system limitations according to EN 50295 have to be concidered during the planning, development and design phase of the AS-i network, especially the max. number of AS-i slaves and the total „yellow“ cable length (< 100 m without repeater). For the control of safety outputs and for coupling multiple AS-i networks, other safety monitoring modules like ASM G2 must be used. Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.