Original instructions, Troubleshooting guide – Rockwell Automation 445L GuardShield Safe 2 and Safe 2 PAC Safety Light Curtains User Manual User Manual
Page 18

R
GuardShield™ Safe 2 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