For applications using over 12 single or double-contact inputs, it is possible to use several TSX PAY 262 modules.
No matter how the safety system is wired, the following must be applied:
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wiring of the safety module outputs in series
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wiring of as many S33/S34 reactivation contacts as there are modules in series (electrically insulated contacts); the reactivation contacts cannot be connected in parallel
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wiring of the K3/K4 feedback loop on one of the modules, and of a bridge between terminals Y1/Y2 on the other modules
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wiring of the safety system inputs to each module independently (no connection in series)
The following diagram shows the cables for the safety module connected in series for use with 2 or 4 contactors:
NOTE: Attention must be paid, however, to the drop in voltage on the output system, due to the 0.1 Ohm safety relay contact resistance, which depends on the relay current.
For a 2.5 A thermal current, there will be a 4 Vdc drop in power with 16 safety modules and a 16 Vdc drop with 32 safety modules in series.
