Rockwell Tools GUARDSHIELD SAFE 4 - Manual (Page 14)

GuardShield Safe 4 Operation Manual
Figure 15: Wiring of the connecting cables of the
M12/5 Pin connector
Transmitter and receiver are supplied with M12/5 pin
connectors. The wiring of such connecting plugs is
given in Figure 14 and Figure 15.
5.3.2. Test input to transmitter
Normally the test input at the transmitter is installed
with a short circuit jumper to activate the transmitter. If
an external test is desired, a contact can be connected
to the test input (Figure 13).
The following points have to be considered:
• In case of operation in the modus “self
monitoring” both OSSD outputs have to be
connected separately to the safety switching
of the machine.
The timing of test input is as follows (Figure 16):
Time Value in ms
Response time on test signal t
1
≤ t
R
+ 15
Time to test t
2
> t
1
Restart time after test t
3
≤ 800
Figure 16: Test timing diagram
t
R
means the response time of the respective
GuardShield Safe 4 type (see product label).
Internal test Description Value
Continuous test current I 10 mA
Peak test current I
P
100 mA
Time of peak test current t
P
20 µs
Internal test Transmitter Test LED
Transmitter
Short circuited (closed) Active Green
Open Inactive Red
5.3.3. Power supply
GuardShield Safe 4 are devices of electrical safety
level III (extra low voltage). 24 VDC ± 20 % has to be
supplied by a power supply that complies with IEC /
EN 60204 and IEC / EN 60742. Such a power supply
meets the electrical safety requirements and maintains
the minimum power of 18 VDC during 20 ms even in
the event of voltage dips
5.3.4. Bringing into operation
After the power has been applied to the GuardShield
Safe 4 and the automatic power-up test is successfully
completed (power up test time < 3 s) the green LED on
the receiver and transmitter will light on. The system is
now ready to operate.
The automatic power-up test will only be successful,
if the transmitter and receiver are properly aligned,
correctly connected and the protective field is not
interrupted.
Any intrusion of an object into the protective field will
switch the OSSD off within the specified response
time and the LED at the receiver toggles from green
to red.
5.3.5. Outputs
The two redundant Output Signal Switching Devices
(OSSD) are fully monitored. Any short circuits are
detected. The maximum load is 0.4 A, higher currents
are limited through short circuit protection. Increased
output loads may be realized using external safety
interfaces.
14
+24 VDC 0 V OSSD 1 OSSD 2 +24 VDC 0 V
1) Operation with internal test
2) Test using a relay contact
3) Test using PNP output
Transmitter
3) 3)
2) 2)
PE
Pin 1 (brown) Pin 3 (blue)
Pin 4 (black) Pin 2 (white) Pin 5 (grey)
Receiver
PE
Pin 1 (brown) Pin 3 (blue)
Pin 4 (black) Pin 2 (white) Pin 5 (grey)
1) 1)
Test 1 Test 2
Test input
OSSD 1 / OSSD 2
t
2
t
3
t
1
open
short circuited