Rockwell Automation 445L GuardShield Safe 4 and Safe 4 PAC Safety Light Curtains User Manual - Manual (Page 18)

R
GuardShield™ Safe 4 Safety Light Curtain User Manual
16
Original instructions
Troubleshooting Guide
The light curtain carries out an internal self-test after startup. If an
error occurs, an appropriate signal combination is indicated by
the LEDs of the transmitter or the receiver.
System Status Indicators
Figure 19: LED indicators
Possible errors and operation status are indicated with the LED
indicators on the transmitter and receiver.
The following combinations are relevant:
Table 1: Transmitter
Table 2: Receiver
External error: An external interface error can be resolved by
correcting the installation, due to
1. Receiver: short circuit of both OSSDs, of OSSD to U
sp,
or of
OSSD to GND
2. Transmitter: Test input open
3. No power or power supply too low
4. Inadequate adjustment of transmitter and receiver
Internal error (orange Power LED is irregularly flashing): Exchange
Component
Status
Orange
(Power)
LEDs
Green
(ok)
Red
(Test)
No power supply (external) off off off
Test input closed (external) on on off
Test input open (external) on off on
Controller error (internal) flashing off on
Protective field error (internal) flashing off on
ATTENTION
Assure that all power to the machine, and
safety system is disconnected during
electrical installation.
POWER
Transmitter
Power on
(orange) POWER
Receiver
Power on
(orange)
Output active
(green)
Output inactive
(red)
OK
Normal operation
(green)
TEST
Test input
(red)
Optical
(IR light)
Optical
(IR light)
Status
Orange
(Power)
LED
Green
(Protective field
not interrupted)
Red
(Protective field
interrupted)
No power supply (external) off off off
No sufficient power (external) on off off
OSSD on (on-load operation, protective
field not interrupted, normal)
on on on
OSSD off (off-load operation, protective
field interrupted or insufficient
alignment of the system)
flashing off on
OSSD error (external, short circuit
between OSSD 1 and OSSD 2, towards
0 V or 24V DC)
all 3s
short time
off flashing
Controller error (internal)
irregular
flashing
off on
Protective field error (internal) flashing off flashing
Normal operation
Transmitter Receiver Operation status
Test input closed
closed OSSD on
OSSD off Protective field free
Protective field interrupted
Test input open OSSD off Test active