28 2TLC172001M0211_A
5.1.2 Connection of in-/outputs IQ..
The IO type IQ_ have some restrictions. If they are to be used as failsafe single channel inputs
they must be configured as dynamic; A, A-inverse, B, B-inverse, C or C-inverse. For some two-
channel devices also +24V can be used.
NOTE:
The connections above are only to show how devices can be electrically connected and are
not to be taken as connections for any specific applications.
WARNING
OK
I
IQ_
Reset
IQ_
OK
IQ_
IQ_
WARNING
IQ_
OK
OK
OK
IQ15
IQ16
IQ_
Dyn A, B or C
IQ_
IQ_
IQ-terminals only connected to +24V
fulfils category 4 by combination
with another dynamic input
IQ-terminals connected to +24V
does not fulfil category 4
IQ-terminal connected to +24V
fulfils the safety requirements
used for reset, start etc.
Example of declaration:
! I0.17,static
(with diode)
current from input must be applied
a dynamic output and another IQ terminal.
! I0.16,a_pulse,non_inv
Example of declaration:
! I0.15,a_pulse
A component or device, blocking
Configured as dynamic output
The system does not accept
a direct connection between
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