Weak signal
If t
he receiver of the ESPE is receiving a weak signal from the sender, e.g., because
the sender and receiver are not correctly aligned to each other, or because the front
screen is contaminated, the application diagnostic output signals the weak signal with
the HIGH state.
Ignored object
A
s long as the ESPE detects an object that is smaller than the reduced resolution set,
the application diagnostic output gives the ignored object signal.
Reset required
W
hen the protective field of the ESPE is free again after an interruption, the application
diagnostic output located on the same plug connector as the reset pushbutton signals
that the reset pushbutton needs to be pressed. The application diagnostic output
signals that reset is required and periodically switches between HIGH and LOW so that
any suitable lamp that is connected flashes.
Muting status
If t
he ESPE is in muting status (the protective function of the ESPE is temporarily
bypassed) or in partial suppression status, the application diagnostic output emits a
constant signal.
Override required
If an er
ror occurs during a valid muting condition, the ESPE makes a mandatory change
to the override status. The application diagnostic output signals this status by periodi‐
cally switching on and off.
7.13 Configuring cascading
Overview
Y
ou can use cascading to connect up to 3 safety light curtains, e.g., to provide presence
detection. The connected devices act like a long safety light curtain. Only one device,
the host, is connected to the control cabinet. The second device, guest 1, is connected
to the host. The third device, guest 2, is connected to guest 1.
Advantages of cascading
A
dvantages of cascading:
•
Rapid connection, no additional external circuitry required
•
No optical mutual interference between the protective fields within a cascade.
Host and guests are operated with the same beam coding.
•
Resolution and protective field heights of the individual systems may be different
NOTE
If a sender doe
s not have an additional guest connected to it, the extension connection
has no function and must be sealed with a protective cap.
Configuring cascading
N
o more than 3 systems can be connected in a cascade.
If your devices are in their as-delivered condition or have been reset to the factory
settings, you can connect them to each other. The devices recognize automatically that
they are part of a cascade.
7 C
ONFIGURATION
98
O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex II 3GD 8023872/18YZ/2021-01-14 | SICK
Subject to change without notice
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