In 2 channel operation, both inputs related to both channels must be seen open before a safety cycle can be started and the output can be closed. This functionality ensures that the output circuit cannot be activated if one of the input channels is not able to be open (for example in case of contact malfunction or short circuit).
The interlock function checks if both K1 and K2 relays are open before the safety cycle. In case of short power-supply interruption, one of the relays may be off while the other remains on. To allow the operation of the module on power return, the power-supply interruption should be at least 100 ms in duration.
The interlock condition is reset by a power cycle. Information about a possible malfunction detected, provided by the interlock, is interrupted and not recovered before the next safety cycle.
The controller can request to reset the safety module by communicating with the safety module on the TM3 Bus.
When the reset signal is active, both safety module internal relays are deactivated.
The reset signal can be used to reset the module after the activation of the interlock function.
NOTE: The reset signal overwrites an activated interlock function. Information about a possible malfunction detected, provided by the interlock, is interrupted and not recovered before the next safety cyle.
The interruption of the interlock function could lead to the degradation of the safety level of the system. The reset of this function should only be done manually after verification of the intended functionality.
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UNINTENDED EQUIPMENT OPERATION |
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oDo not use the reset function to reset an interlock programmatically. oAlways verify the interlock notification before using the reset function. |
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Failure to follow these instructions can result in death, serious injury, or equipment damage. |
