
Operating Instructions
Chapter
4
UE 440/470
8 010 432/P097/14-03-05
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
31
Configurable functions
$
The safety controller does
not
switch to the bypass state if...
–
a teach-in procedure for a C 4000 was already started via a Teach-in key-operated
switch connected to the UE 440/470
–
a teach-in procedure was already started at a C 4000 connected via EFI by way of a
Teach-in key-operated switch connected there.
–
– the respective E-Stop is activated.
Key-operated switch for bypass
For the key-operated switch for bypass, you configure…
$
whether you evaluate both channels of the switch complementary or equivalent (see
Page 41). With equivalent evaluation, you must use an N/O contact as the key-operated
switch for bypass.
$
whether an input delay is necessary (see Page 42).
$
whether a discrepancy time is necessary (see Page 43).
Check the connected key-operated switch for bypass regularly!
Using organisational measures, ensure that the key-operated switch for bypass is
actuated once after a certain interval.
This is necessary so that the UE 440/470 can identify an error condition of the key-
operated switch for bypass or an error condition in its connection cable which occurs up
until then. The interval is to be defined to suit the specific case dependant on the
application.
Constantly check in the operating mode in which you have configured the bypass active
whether the bypass function can be activated and deactivated.
Context menu device symbol UE 440/470, command
Edit configuration draft…
in
Edit
configuration draft
window, context menu element
symbol key-operated switch for
bypass
, command
Element wizard…
.
The electrical connection of a key-operated switch for bypass is described in Chapter 6
"Electrical installation" on Page 45.
Bypass signal lamp
You can configure a Bypass signal lamp within the pin assignment. The connected signal
lamp flashes at 2 Hz if bypass was activated.
The electrical connection of the Bypass signal lamp is described in Chapter 6 "Electrical
installation" on Page 45.
%
ATTENTION
!