Reference Manual Manual

All parameters are specified at 24V, 2.5A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
Rockwell Automation Publication 1606-RM031A-EN-P — April 2014 13
Bulletin 1606 Switched Mode Power Supplies
15. Protection Features
Output protection Electronically protected against overload, no-load and short-circuits
*)
Output over-voltage protection typ. 58.5Vdc
max. 60Vdc
In case of an internal power supply defect, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 3.5mm e.g. screws, small parts
Over-temperature protection yes output shut-down with automatic restart
Input transient protection MOV (Metal Oxide Varistor) and active transient lter
Internal input fuse 3x T3.15A H.B.C. not user replaceable
*) In case of a protection event, audible noise may occur.
16. Safety Features
Input / output separation
*)
SELV IEC/EN 60950-1
PELV IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41
Class of protection I PE (Protective Earth) connection required
Isolation resistance > 5MOhm Input to output, 500Vdc
PE resistance < 0.1Ohm
Touch current (leakage current) typ. 0.17mA 3x 400Vac, 50Hz, TN mains
typ. 0.24mA 3x 480Vac, 60Hz, TN mains
< 0.22mA 3x 440Vac, 50Hz, TN mains
< 0.31mA 3x 528Vac, 60Hz, TN mains
*) Double or reinforced insulation
17. Dielectric Strength
The output voltage is oating and has no ohmic connection to the ground. Type and factory tests are conducted by
the manufacturer. Field tests may be conducted in the eld using the appropriate test equipment which applies the
voltage with a slow ramp (2s up and 2s down). Connect all phase-terminals together as well as all output poles before
conducting the test. When testing, set the cut-off current settings to the value in the table below.
Fig. 17-1 Dielectric strength
A B C
Type test 60s 2500Vac 3000Vac 500Vac
Factory test 5s 2500Vac 2500Vac 500Vac
Field test 5s 2000Vac 2000Vac 500Vac
Cut-off current setting > 10mA > 10mA > 30mA
A
C
B
L1
Input
Earth
Output
-
+
L3
L2
To fulll the PELV requirements according to EN60204-1 § 6.4.1, we
recommend that either the + pole, the – pole or any other part of
the output circuit shall be connected to the protective earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.