ABB Tina 7A Original Instructions Manual

Contents

2TLC172139M0201, rev. B 9 www.abb.com/ljokabsafety2013-03-025 OperationLED indicationLED Indication Description Input signal on pin-2LED on TinaGreen Safety circuit closed (protection OK) Dynamic signal inGreen-Red (flash) Safety circuit open (protection OK) No dynamic signal in or 0 VDC inRed Safety circuit interrupted (protection open) +24 VDC in or safety circuit interruptedInformation output signal attributesThe information output of the unit (pin-5) is set either high (+24 VDC) or low (0 VDC) depending on four differentinput signals (pin-2):• Dynamic signal - Dynamic signal input exist, i.e. the safety circuit is OK up until this unit• No dynamic signal - Dynamic signal input does not exist, i.e. the safety circuit is interrupted before thisunit.• +24 VDC - A constant +24 VDC signal is applied = high (H)• 0 VDC - The pin is connected to 0 VDC = low (L)The information output signal depends on the input signal according to the table below. Note that if the safety isinterrupted the information output signal is always low (L).Input signal (pin-2) Dynamic signal No dynamic signal +24 VDC 0 VDCInfo output signal (pin-5) High High Low HighThe delay for switching the information signal output from high to low (H  L) and low to high (L  H) is given inthe table below.Info output signal switch H  L L  HDelay ~ 12 ms ~ 0 msNB: If the unit detects an error (short circuit or interruption) lasting shorter than 13 ms the information output signalis set to low for 1.2 s (1200 ms) and then set to high again. This does not affect Vital since it needs 38 ms torelease. Pluto however does release, which means that a filter (20 ms) must be implemented if this function isneeded.Warning! The information output signal is not a failsafe signal and should never be used for the safety purpose(s).

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