Connecting Diagram; Testing For Cat. 2 Applications - Cedes ELS 300 Bedienungsanleitung

Installation and operation manual
5.1.

Connecting diagram

ELS 300 Tx-...
+10...30VDC
brown
(pin 1)
GND
blue
(pin 3)
ELS 300 Tx-...
+10...30VDC
brown
(pin 1)
GND
blue
(pin 3)
Figure 3: Connecting diagram NPN and PNP respectively
Standard M8 male connector
Pin allocation based on industry standard:
Top view of the connector (view to the pins)
Figure 4: Connecting diagram of the connector
© CEDES/January 2012
ELS 300 Rx-NPN/...
+10...30VDC
brown
(pin 1)
Out
black
(pin 2)
GND
blue
(pin 3)
ELS 300 Rx-PNP/...
+10...30VDC
brown
(pin 1)
Out
black
(pin 2)
GND
blue
(pin 3)
Pin 1: +10 ... 30 VDC
Pin 2: Out
Pin 3: GND
Pin 4: -
5.2.

Testing for Cat. 2 applications

According to EN ISO 13849-1, the safety function
must be tested by a higher-level controller (e.g. a
programmable logic control) at regular intervals. The
frequency of these tests is dependant upon the
results of the danger/risk analysis of the machine
Load
(EN 292-1 and EN 1050). It must be initiated at start-
up, and at the beginning of a dangerous cycle, as
well as during normal operation, if this is what the
risk analysis
Depending on the results of the risk analysis, a test
during the machine cycle may also be sufficient. It is
advantageous to carry out this test before the
beginning of a dangerous cycle has commenced.
Likewise, the risk analysis may show that additional
tests must be carried out periodically during normal
operation. This may be the case, for example, in
machines with a very long cycle time, or machines
that switch very high loads, where a failure and/or
welding of the contacts, is more likely.
Load
For testing, the supply voltage of the ELS 300 Tx has
to be interrupted. For the minimum duration of the
interruption, refer to Figure 6 (timing diagram on
page 6).
According to the timings in Figure 6 the output has to
change its state depending on the ELS 300 Rx type
used. The connected safety circuit (e.g. relay block)
will open. If there is a failure, the higher-level
controller will not measure a voltage change over
this safety circuit. In that case the higher-level
controller will not start the machine. After applying
the rectangular pulse, the connected safety circuit
will close again.
For other applications, check EN ISO 13849-1.
www.cedes.com
and operating mode
ELS 300
indicate.
5