Rockwell Automation Allen-Bradley 1606-XLDF240F, Справочное руководство

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Rockwell Automation Publication 1606-RM124A-EN-P - September 2021 15
DC/DC Converter - 48V/48V, 5 A, 240 W Reference Manual
Safety and Protection
Features
Dielectric Strength
The output voltage is floating and has no ohmic connection to the ground.
Double or reinforced insulation insulates the output to the input.
It is recommended that either the + pole or the – pole be connected to the
protective earth (PE) system. This helps to avoid situations in which a load
starts unexpectedly or cannot be switched off when unnoticed earth faults
occur.
The manufacturer conducts type and routine tests. Field tests can be
conducted in the field with the appropriate test equipment, which applies the
voltage with a slow ramp (2 seconds [s] up and 2 seconds down). Connect all
phase-terminals together and all output poles before conducting the test.
When testing, set the cutoff current settings to the value in the following table.
Attributes Values Notes
Isolation resistance
Min 500 M Ω
At delivered condition between input and output, measured
with 500V DC
Min 500 M Ω
At delivered condition between input and PE, measured with
500V DC
Min 500 M Ω
At delivered condition between output and PE, measured with
500V DC
PE resistance Max 0.1 Ω
Resistance between PE terminal and the housing in the area of
the DIN rail mounting bracket.
Output overvoltage
protection
Typ 58V DC —
Max 60V DC —
—
If there is an anomaly inside the DC/DC converter, a redundant circuit limits the
maximum output voltage. The output shuts down and automatically attempts to
restart.
Class of protection — III According to IEC 61140
Degree of ingress protection — IP20 According to EN/IEC 60529
Over-temperature protection — Not included —
Input transient protection —
Metal Oxide
Varistor
(MOV)
For protection values, see Electromagnetic Compatibility on
page 13 .
Internal input fuse — Included Non-user-replaceable, slow-blow, high-braking capacity fuse
Touch current
(leakage current)
—
The leakage current, which is produced by the DC/DC converter itself, depends
on the input voltage ripple and must be investigated in the final application.
For a smooth DC input voltage, the produced leakage current is <100 µA.
Test or Setting Time A B C
Type test 60 s 1500V AC 1500V AC 500V AC
Routine test 5 s 1500V AC 1500V AC 500V AC
Field test 5 s 1000V AC 1000V AC 500V AC
Cutoff current setting — 20 mA 10 mA 12 mA
A
C
B
+
Input
Chassis
Ground
Output
-
+
-