Chapter 2: FUNCTIONAL SAFETY
CHAPTER 2: FUNCTIONAL SAFETY
FUNCTIONAL SAFETY
Safety function
The safety-related stop function in the radio system complies with EN 13849-1:2008 Category 3 PLd.
The stop relays on the receiver unit are controlled by the stop button on the transmitter unit. When the
stop button is pressed, the stop relays break the power to the safety-related application. The complete
end-user system, including the radio system, enters a safe state. The maximum response time for the
safety-related stop function is 500ms.
Applicable products
The following transmitter and receiver units are prepared to comply with the appointed safety
requirements:
PN-RX-MNB4 (PN-R15-1)
PN-RX-MDB10 (PN-R15-2)
PN-RX-MNA4 (PN-R15-7)
PN-RX-MDA10 (PN-R15-8)
PN-TX-MX8B (PN-T19-2)
NOTE! Both the receiver and the transmitter used in the specific end-user system must be compliant.
Installation
The stop relays on the receiver unit shall be correctly installed on the end-user system, so that
opened/deactivated stop relays break the power to the safety-related application. The safety level of the
stop function can only be credited when used in a complete end-user system which complies with EN
13849-1:2008 Category 3 PLd.
Configuration
The default configuration of the receiver unit complies with the appointed safety requirements. Any re-
configuration that oversteps the safety requirements will be indicated by a LED on the main board of the
receiver unit. Before commissioning the radio system, the installer must check the LED indication.
Function LED Status Indicates
PLd status LED (red)
ON Not compliant with PLd
OFF Compliant with PLd
1. Stop relays
2. PLdstatus LED
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