SICK Flexi Classic series, Operating Instructions Manual

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Operating instructions Chapter 3
Flexi Classic
8011509/YPP0/2015-10-26 © SICK AG • Industrial Safety Systems • Germany • All rights reserved
29
Subject to change without notice
Product description
3.4.2 Terminal assignment
Assignment Description
I1/I2 Global emergency stop (equivalent switch with test pulses)
I3/I4 Local emergency stop (local input, depending on the program
set)
A1 (+U
B
)
A2 (GND)
Voltage supply
X1
X2
Test outputs: cross-circuit detecting and short-circuit detecting
control signals for controlling safety sensors
4)
Q1 Single-channel safety output (OSSD)
4)
Q2
Connection for the lamp for “Global emergency stop status” and
“Reset required”
I5 Connection for the external device monitoring (EDM)
I6 Connection for the reset button
I
P
Input signal from the previous module (PRE_IN)
I
N
Input signal from the next module (NEXT_IN)
O
P
Output signal to the previous module (PRE_OUT)
O
N
Output signal to the next module (NEXT_OUT)
3.4.3 Global emergency stop with the UE410-GU
The global emergency stop makes possible the simultaneous shut down of the safety out-
puts on several Flexi Classic stations connected together that are each equipped with a
UE410-GU as the main module.
•
In theory as many UE410-GU modules as required can be connected together to form a
global emergency stop system. However, it is recommended not to exceed 32 modules,
because each module increases the response time of the overall system (see the infor-
mation on the global response time in section 11.1.2 “UE410-GU module” of the tech-
nical data on page 101).
•
The different UE410-GU modules that together form a global emergency stop circuit do
not need to be in the same protected area. Faults in the area O
X
and I
X
, e.g. a short-
circuit or cross circuit, are detected and will result in shutdown.
•
All UE410-GU modules that are on a common global emergency stop cut-off path must
be connected to the same GND connection.
Principle of operation
As long as the system is enabled, each UE410-GU sends a signal to the previous UE410-
GU (PRE) and to the next UE410-GU (NEXT). If the global emergency stop is activated on a
module (falling edge on I1/I2), then this module sets its safety output Q1 as well as the
signals to its neighboring modules (outputs O
P
and O
N
) to low. The neighboring modules
now also set their safety output Q1 as well as their outputs O
P
and O
N
to low.
The status of the global emergency stop is also output via the output Q2. If the global
emergency stop is activated on this UE410-GU, this status is indicated with a signal
flashing at 2 Hz on output Q2. If the global emergency stop has been activated on another
UE410-GU, then this status is indicated with a continuous high on output Q2.
4)
When using multiple modules see section 4.12 “Grouping of subsystems” on page 78.
Tab. 14: UE410-GU terminal
assignment
Notes