Display Possible cause Troubleshooting
Ö
Red ERR
o
Blue 1
Ö
Blue 2
o
Blue 3
o
Blue 4
o
Blue 5
Short-circuit,
cr
oss-circuit or
cable defect
b
Chec
k the function of the reset button. The
pushbutton may be defective or being pressed
continuously.
b
Check the wiring for short-circuit to 24 V or
0 V.
b
Check the wiring between host and guest or
between host, guest and guest.
b
Check the wiring between the two OSSDs.
Ö
Red ERR
o
Blue 1
o
Blue 2
Ö
Blue 3
o
Blue 4
o
Blue 5
Supply voltage
t
oo low
b
Chec
k the supply voltage and the power sup‐
ply unit. Replace defective components if nec‐
essary.
Ö
Red ERR
o
Blue 1
o
Blue 2
o
Blue 3
Ö
Blue 4
o
Blue 5
Fault due to
ambient li
ght
b
Chec
k the distance to reflective surfaces or to
other safety light curtains. If necessary,
mount non-reflective partitions.
Ö
Red ERR
o
Blue 1
o
Blue 2
o
Blue 3
o
Blue 4
Ö
Blue 5
System error
b
Switch the voltage supply of the miniTwin4 off
and back on (renewed power-up).
b
If the display also lights up during repeated
power-up during the start-up phase, replace
the device.
b
If the display lights up during operation, con‐
tact SICK support.
Ö
White COM Fault during com‐
munic
ation
between 2 twin
sticks
b
Chec
k the alignment of the two twin sticks
with one another.
Or, if a twin stick has been replaced:
b
Switch the voltage supply for both twin sticks
off and then back on again.
Ö
Red ERR
Ö
Orange EDM
EDM errors
b
Chec
k the contactors and their wiring, fix the
wiring error if necessary.
Ö
Red ERR
Ö
Orange EDM
Ö
Orange RES
Error during con‐
f
iguration of EDM
or reset or
cabling of Pin 2
b
R
epeat configuration of EDM or reset.
Or:
b
Check the cabling Pin 2.
Ö
Orange EDM
Ö
Orange RES
Configuration of
EDM or r
eset not
yet performed.
b
S
witch on the connected relay or the contac‐
tor.
Or:
b
Actuate the connected reset button.
Or:
b
Check the cabling Pin 2.
Further topics
•
"St
atus indicators", page 17
•
"Minimum distance from reflective surfaces", page 25
•
"Minimum distance for cascaded systems", page 26
•
"Configuring reset", page 64
•
"Protective operation without reset and/or without EDM", page 31
TROUBLESHOOTING 11
8012624/10OM/2018-08-09 | SICK O P E R A T I N G I N S T R U C T I O N S | miniTwin4
87
Subject to change without notice