where
Instantaneous load capacity of the custom resistor
PR,
inst
Drive intermediate DC circuit voltage:
UDC
1.35 · 1.2 · 415 V (when supply voltage is 380 … 415 V AC)
1.35 · 1.2 · 500 V (when supply voltage is 440 … 500 V AC) or
Resistance of the custom resistor
R
■
Selecting and routing the brake resistor cables
Use the same cable type for the resistor cabling as for the drive input cabling to
ensure that the input fuses also protect the resistor cable. Alternatively, a two
conductor shielded cable with the same cross-sectional area can be used.
Minimizing electromagnetic interference
Obey these rules in order to minimize electromagnetic interference caused by the
rapid current changes in the resistor cables:
•
Shield the braking power line completely, either by using shielded cable or a
metallic enclosure. Unshielded single-core cable can only be used if it is routed
inside a cabinet that efficiently suppresses the radiated emissions.
•
Install the cables away from other cable routes.
•
Avoid long parallel runs with other cables. The minimum parallel cabling
separation distance is 0.3 meters (1 ft).
•
Cross the other cables at 90 degree angles.
•
Keep the cable as short as possible in order to minimize the radiated emissions
and stress on chopper IGBTs. The longer the cable the greater the radiated
emissions, inductive load and voltage peaks over the IGBT semiconductors of
the brake chopper.
Note: ABB has not verified that the EMC requirements are fulfilled with custom
brake resistors and cabling. The customer must consider the EMC compliance of
the complete installation.
Maximum cable length
The maximum cable length of the resistor cable(s) is 10 m(33 ft).
Resistor braking 245
Summary of Contents for ACH580-31
Page 1: ... ABB INDUSTRIAL DRIVES ACH580 31 drives Hardware manual ...
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Page 39: ...Operation principle 39 ...
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Page 112: ...R3 1 7 N m 112 Electrical installation IEC ...
Page 113: ...R6 1 7 N m Electrical installation IEC 113 ...
Page 114: ...R8 1 7 N m 114 Electrical installation IEC ...
Page 130: ...R3 Max 250 mA 130 Electrical installation North America NEC ...
Page 131: ...R6 Electrical installation North America NEC 131 ...
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Page 166: ... Fan arrow must point up 166 Maintenance ...
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Page 214: ...R3 IP21 UL Type 1 3AXD50000028643 214 Dimension drawings ...
Page 215: ...R3 Option B056 IP55 UL Type 12 3AXD50000045321 Dimension drawings 215 ...
Page 216: ...R6 IP21 UL Type 1 3AXD50000037446 216 Dimension drawings ...
Page 217: ...R6 Option B056 IP55 UL Type 12 3AXD50000045351 Dimension drawings 217 ...
Page 218: ...R8 IP21 UL Type 1 3AXD50000147052 218 Dimension drawings ...
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Page 275: ...CMOD 01 multifunction extension module external 24 V AC DC and digital I O 275 ...
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Page 282: ...282 CMOD 02 multifunction extension module external 24 V AC DC and isolated PTC interface ...