Reer EOS4 Series - TEST Functionality; Output Signal Status

EOS4 SAFETY LIGHT CURTAIN
8540733 • 23/03/2016 • Rev.17 25
English
System power-on. Initial TEST
RED
YELLOW
BREAK condition (A)
RED
OFF
CLEAR condition (B)
OFF
YELLOW
GUARD condition (C)
GREEN
OFF
BREAK_K condition (D)
YELLOW BLINKING
YELLOW BLINKING
FAIL condition (Table 19)
RED BLINKING
3
OFF
GUARD condition with weak signal
GREEN
BLUE
CLEAR condition with weak signal
-
YELLOW /BLUE
BREAK condition with weak signal
RED
BLUE
BREAK_K condition with weak signal
YELLOW
YELLOW
OFF
BLUE
Table 16 - RX light signals EOS4 14mm and H (20m)
System power-on. Initial TEST
RED
ON
BREAK condition (A)
RED
OFF
CLEAR condition (B)
OFF
ON
GUARD condition (C)
GREEN
OFF
BREAK_K condition (D)
YELLOW BLINKING
YELLOW BLINKING
FAIL condition (Table 19)
RED BLINKING
4
OFF
MASTER : Light curtain free;
SLAVE : Light curtain(s) occupied
RED
Blinking
Table 17 – RX light signals EOS4 (Master)
TEST function
The test function simulates the occupation of the protected area, allowing checking by an
external supervisor (e.g. PLC, control module, etc.) of the correct operation of the entire
system. Via an automatic fault detection system, the EOS4 light curtain is able to verify
occurrence of a fault independently within the response time (declared for each model).
This fault detection system is always active and does not require any external
intervention. The TEST command is available in the case in which the user wishes to
check the devices connected downstream of the light curtain (without physically
intervening inside the guarded area). This command interrupts emission of the beams on
the emitter and makes it possible to switch the OSSD from ON to OFF status as long as
the command is active.

The minimum duration of the TEST command must be at least 4 msec.
Status of the outputs
On the Receiver of the EOS4 there are two PNP static outputs whose status depends on
the condition of the protected area.
 The maximum permissible load for each output is 400mA@24VDC, corresponding to a resistive load of 60  .
 The maximum OFF-state voltage is < 0,5VDC.
 The maximum output current in OFF-state (leakage current) is <2mA.
 The maximum load capacity corresponds to 0.82  F@24VDC.
3
The type of fault is identified by the number of flashes (see chapter)