GuardShield Safe 2 Operation Manual
Operation Manual GuardShield Safe 2
Table 2: Receiver
Status LED
Orange Green Red
(Power) (Protective (Protective
field not field
interrupted) interrupted)
No power supply off off off
(external)
No sufficient power on off off
(external)
OSSD on (on-load operation, on on off
protective field not interrupted,
normal)
OSSD off (off-load operation, flashing off on
protective field interrupted or
insufficient alignment of the
system)
OSSD error (external, short all 3s
circuit between OSSD 1 and short time off flashing
OSSD 2, towards 0 V and off
24 VDC)
Controller error (internal) irregular off on
flashing
Protective field error (internal) flashing off flashing
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
, of OSSD to GND
2. Transmitter: Test input open
3. No or too low power supply
Internal error (orange LED is irregularly flashing):
Please contact the nearest ROCKWELL
AUTOMATION representative.
Normal operation
Transmitter Receiver Operation status
Test input closed OSSD on Protective field free
Test input closed OSSD off Protective field interrupted
Test input open OSSD off Test active
5.2.7. Optical Interface
As an accessory Rockwell Automation offers an
Optical Interface including a software package for
extended diagnostic purposes.
Figure 17: Optical Interface
The adapter may be snapped on the controller during
normal operation and may be connected via the
interface to a MS-Windows personal computer for
diagnoses purposes. A detailed description about
extended diagnostic features is shipped with the
diagnostic package.
The Optical Interface offers apart from the diagnosis
of operating conditions, the possibility to select and
analyse the length of the interrupted protective field.
6. Interfacing to safety devices
The interfacing of the light curtain with the machine
control has to be control reliability, i.e. a correct
interface with a safety PLC or safety relays with
positive guided relay contacts.
Figure 18 - Diagram for automatic reset mode -
shows a diagram of a typical emergency stop relay
component.
Other applications are mentioned in the application
note “Safety Interfaces with GuardShield Safe 2”, on
the ROCKWELL AUTOMATION homepage.
Danger
The safety devices and the interconnection to
the machinery have to comply with the basic
safety requirements as mentioned in the current
regulations and standards.
Direct interfacing of a safety light curtain to machine
control that does not meet the necessary safety
integrity level, i.e. use of general purpose PLCs or
general purpose relays can cause serious injury or
death of persons.
Consult a professional safety engineer!
Danger
14
0 VDC
+24 VDC
Transmitter
Receiver
1
2 3 4 5 6 7
1
2 4 5 6 73
1
MSR 4X
3 23 24
14
S11
S12
A1
S33 S34
S21 S22
A2
Figure 18: Diagram for automatic reset mode with ROCKWELL AUTOMATION MSR 42
15
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