Appendix
User manual 57120_hdb_en_12 67 / 70
EN European standard
ESD Electrostatic discharges
FE Functional earth
I Current
IEC International Electrotechnical Commission, international standardization institute
IN Input
IP20 Ingress Protection, protection class according to DIN EN 60529
1st code digit = Protection against accidental contact and solid foreign objects
2nd code digit = Protection against ingress of water
2: protected against: solid foreign objects with diameter starting from 12.5 mm and
contact with a finger.
0: No protection
IP67 6: Dustproof, protection against contact with a wire
7: Protection against the effects of temporary submersion in water
ISO International Standard Organization
LED Light Emitting Diode
n. c. not connected
OUT Output
PELV Protective Extra Low Voltage
SELV Safety Extra Low Voltage
U Voltage
U/I Voltage / current
Term Meaning