Owner manual
Warning 
z  Calculate respective safety distances, taking into consideration the response time of the 
SafetyOne, safety devices to be connected to the SafetyOne, and each other device that forms a 
part of the system configuration. 
z  Applicable safety performance is dependent on each system configuration. 
z  Use a power supply that meets following required specifications: 
-Conforms to the power supply rating of SafetyOne. 
-Complies with the SELV/ PELV circuit specified by EN 50178 or EN60950. 
-Has the functionality or the functional equivalent of the control voltage and current of class 2 
circuit, as defined in UL508 or UL1310. 
-Is in compliance with safety laws and regulations relating to electrical safety, EMC, and like under 
the laws and regulations of the country in which it is being used. 
z  Ground the V- line (0V DC) for ground diagnosis.   
z  In the case of a new configuration or modified installation, be sure to perform a check for each 
input and output function. 
z  Implement protective measures that personal, other than safety responsible persons operating 
the SafetyOne, are unable to modify the configuration. 
z  Separate SafetyOne from devices and wires which are not in accordance with class 2 circuit 
requirements. 










