Safety Modules
Wiring precautions General The safety system must be wired in accordance with EN60204-1. This section gives a description of the rules for wiring and mechanically protecting cables. The entire safety system, the Safety Sensor & Emergency Stop Devices (SS ESDs) or Position Switchs (PSs), TSX PAY 262 module, protection fuses and auxiliary relays are incorporated in housings with an IP54 minimum protection index as per EN954-1. Grounding The module has no grounding terminal on its front panel. Depending on the TSX CPP •02 cable being used, the 0 Vdc can be grounded (see EN60204-1) directly via the TELEFAST ABE-CPA13. NOTE: The TSX CPP 301 cable has no ground connection. Protection of safety system Errors within the safety modules can be propagated to the 'outside of the module, particularly to the external supply in use: short circuits within the module can cause a supply voltage avalanche or a supply malfunction if it is not protected. This is why a 1 A (gL) quick-blow fuse is placed in the control section of the relays, because the maximum consumption is 200 mA. NOTE: This fuse, F1, is an active element of the safety system. The module also contains a current limiting device set to 750 mA to detect inter-channel short circuits on the SS ESDs or PSs. The external supply is protected in the event of this happening, and a detected error is indicated on the safety system. In order To guarantee the safety function, it is compulsory to use the following: On the input double contact SS ESDs or PSs NF contacts of the guided-contact auxiliary relays in the feedback loop
On the output two or four guided-contact auxiliary relays a 4 A gL output protection fuse, F2
On the external module supply: a 1 A (gL) protection fuse F1
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