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13 Accessories
13.1 FN 20 mains supply unit
13.1.1 Purpose
The FN 20 mains supply unit is used to connect the F 200 K to a mains A.C. It has
been designed for top hat rail installation (as an option, it is also available for plate
mounting). Moreover, the unit has the related safely operating output relays for mains
A.C. to couple the relays of the F 200 K.
Make sure to carry out installation as to provide for a protection degree of at least IP
40. As an option, the FN 20 mains supply unit is available in an IP 65 housing.
13.1.2 Technical parameters
Mains alternating voltage 230 V
%10
%15
+
−
optional 115 V
+
−
%10
%15
Note: When ordering the FN 20 for 115 V AC, it will be delivered with the
related identification marking on the mains unit. The setting for the mains
supply voltage will only be changed in the factory.
Mains frequency 45 ... 65 Hz
Power consumption ≤ 6 VA
related fuse inside the device, secondary 0.2 A
Output DC voltage Protection class III
Output no-load voltage < 33 V
max. current input 0.2 A
Operating mode Continuous operation
Creepage distances and clearances DIN EN 60730 part 1
Output contact, safe Changeover switch (floating)
- Admissible switching voltage max. 250 V AC, 48 V DC
Protection II
min. 6 V AC/DC
- Admissible switching current max. 0.5 A
min. 10 mA, at a limit load
of 50 mA
- Switching capacity min. 0.1 W
on DC voltage max. 30 W
on AC voltage max. 120 W
- Internal fuse 500 mA slow IEC
Signalling contact Normally-open contact (floating)
- Admissible switching voltage max. 250 V AC, 30 V DC
Protection class II
min. 6 V AC/DC