Rockwell Tools GUARDSHIELD SAFE 4 Manual de servicio descargar pdf (Pagina 7)

GuardShield Safe 2 Operation Manual

Operation Manual GuardShield Safe 2

Figure 12: Correct testing of the protective ﬁeld using

a test rod

5.2. Electrical Installation

5.2.1. Connection diagram

The transmitter and receiver are connected to the

machine control using a 5-wire cable.

For the transmitter and the receiver two M12 (for

cable - Ø 3 ... 6.5 mm)

Figure 13: Terminal block connection (see also

Figure 18)

Transmitter

Receiver

1) Operation with internal test

2) Test using a relay contact

3) Test using a PNP output

+24 VDC

0 V

Not connected

+24 VDC

0 V

OSSD 1

OSSD 2

Not connected

Transmitter

Receiver

= 0 V

= Test 1

= + 24 VDC

= Test 2

Pin 5

= PE

Transmitter:

= 0 V

= OSSD 1

= + 24 VDC

= OSSD 2

= PE

Receiver:

Figure 14: M12/5 Pin connector

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 is given in Figure 14 and

Figure 15.

5.2.2. 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).

+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

Pin 1 (brown)

Pin 3 (blue)

Pin 4 (black)

Pin 2 (white)

Pin 5 (grey)

Receiver

Pin 1 (brown)

Pin 3 (blue)

Pin 4 (black)

Pin 2 (white)

Pin 5 (grey)

Test 1

Test 2

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.

GuardShield Safe 2:

• In case of connecting an external test it could be

that, depending on the test type, only one OSSD

output (OSSD1 or OSSD2) has to be considered.

The timing of test input is as follows (Figure 16):

Time Value in ms

Response time on test signal t

≤ t

+ 15

Time to test t

> t

Restart time after test t

≤ 800

Figure 16: Test timing diagram

means the response time of the respective

GuardShield Safe 2 type (see product label).

Internal test Description Value

Continuous test current I 10 mA

Peak test current I

100 mA

Time of peak test current t

20 µs

Internal test Transmitter Test LED

Transmitter

Short circuited (closed) Active Green

Open Inactive Red

5.2.3. Power supply

GuardShield Safe 2 safety light curtains 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.

5.2.4. Bringing into operation

After the power supply has been applied to the

GuardShield Safe 2 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.

Test input

OSSD 1 / OSSD 2

open

short circuited

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 OSSDs off within the speciﬁed response

time and the LED at the receiver toggles from green

to red.

5.2.5. 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.

Important information:

Safety devices for connection of GuardShield Safe 2

the must be built with PNP logic. The outputs will be

periodically controlled for short-circuit and cross-fault

detection.

The output voltage at the solid-state outputs is

dependant on the power supply and the output load

(see chapter 11 Technical Data).

5.2.6. Trouble shooting

Possible errors and operation status are indicated with

the LED indicators on the transmitter and receiver.

Also the Optical Interface has an option that can be

used for the diagnostics

Following combinations are relevant:

Table 1: Transmitter

Status LED

Orange Green Red

(Power) (ok) (Test)

No power supply off off on

(external)

Test input closed on on off

(external)

Test input open on off on

(external)

Controller error ﬂashing off on

(internal)

Protective ﬁeld error ﬂashing off ﬂashing

(internal)

1 2 3 4 5 6 7 8 9 10 11 12 13

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