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5
Operation
LED
Indication
ON
Signal:
OFF
ON
On:
OFF
ON
Mute:
OFF
Information output signal attributes
The information output of the unit (terminal Y14) is set either high (+24 VDC) or low (0 VDC) depending on four
different input signals (terminal S1):
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 this
unit.
+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 is
interrupted the information output signal is always low (L).
Input signal (S1)
Info output signal (Y14)
The delay for switching the information signal output from high to low (H
the table below.
Info output signal switch
Delay
Warning! The information output signal is not a failsafe signal and should never be used for the safety purpose(s).
2TLC172131M0201, rev. A
2011-09-20
Description
Dynamic signal input S1 – OK
Dynamic signal input S1 – not OK
Supply voltage – OK
Supply voltage – not OK
Dynamic signal output on S2 and S3, as well as +24 VDC to L1 and L2 – OK
Dynamic signal output on S2 and S3, or +24 VDC to L1 and L2 – not OK
Dynamic signal
High
H
L
0 ms
No dynamic signal
Low
L) and low to high (L
L
H
0 ms
13
+24 VDC
0 VDC
Low
Low
H) is given in
www.abb.com/lowvoltage