Original instructions, External test signal, Power supply – Rockwell Automation 445L GuardShield Micro 400 Safety Light Curtain User Manual User Manual

Page 18: Bringing into operation, Outputs

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GuardShield™ Micro 400 Safety Light Curtain User Manual

16

Original instructions

Figure 15: Wiring Diagram for connection to MSR45E Expansion Module and external
contactor using start release

External test signal

In case the risk analysis of the application requires an external test
signal (according to EN 13849-1) please refer to the user manual
of the connected MSR42 control unit.

Power supply

The power supply and the evaluation of the protective field of a
GuardShield Micro 400 light curtain can only be carried out
through a MSR41 or MSR42 Series control unit.

Bringing into operation

The transmitter and receiver units must be connected to a MSR41 or
MSR42 safety control unit. Then the supply voltage may be
connected to the control unit. After power-up, there is an automatic
self test (duration < 5 s) of all system components.

In case the protective field is free and the transmitter and receiver
are correctly aligned, the green LEDs on the GuardShield Micro
400 light curtains will illuminate.

If after a successful power-up the light curtain detects an
interruption of the protection field, the red LEDs on the
GuardShield Micro 400 light curtains will illuminate.

Outputs

A GuardShield Micro 400 safety light curtain pair is always
connected to a safety controller. Every connection to a machine
controller or a safety circuit is done through an MSR41 or MSR42
safety controller, which provides two redundant semiconductor
OSSD (Output Signal Switching Device) safety outputs. One or

more MSR45E safety relay expansion modules can be connected
to the MSR41 or MSR42 controller.

Each MSR41 or MSR42 safety controller also provides two status
outputs (Info1 and Info2). These may only be connected to the
machine controller for information purposes.

M

L1 L2 L3

Tr

ansmitter

Receiv

er

Micro 400

GPIO4

LAMP

GPIO3

GPIO2

GPIO1

OSSD2

OSSD1

INFO2

INFO1

IN2

IN1

+24V

0V/GND

MSR42

MSR45E

13

14

23

24

.

.

.

.

.

.

.

.

.

.

.

.

K3

K4

K4

K3

+24V DC

GND = 0V

RJ-45

RJ-45

Ribbon Cable for Extender

Blue

White

Start

ATTENTION

The status outputs (Info1 and Info2) of the
MSR41 or MSR42 safety control units are not
safety related. They may not be used within the
safety circuit of the machine.

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