Optional Brake Chopper And Resistor(S) - ABB ACS800-U4 Hardware Manual

132
Note: A resistor other than the standard resistor can be used provided that:
• its resistance is not lower than the resistance of the standard resistor.
• the resistance does not restrict the braking capacity needed, i.e.
where
P
U
R
• the heat dissipation capacity (E
above).
WARNING! Never use a brake resistor with a resistance below the value specified
for the particular drive / brake chopper / resistor combination. The drive and the
chopper are not able to handle the overcurrent caused by the low resistance.

Optional brake chopper and resistor(s)

The nominal ratings for dimensioning the brake resistors are given below at an
ambient temperature of 40°C (104°F).
ACS800-04 type Braking power of the chopper and
ACS800-U4 type the drive
P
brcont
(kW)
230 V units
-0001-2 0.55
-0002-2 0.8
-0003-2 1.1
-0004-2 1.5
-0005-2 2.2
-0006-2 3.0
-0009-2 4.0
-0011-2 5.5
-0016-2 11
-0020-2 17
-0025-2 23
-0030-2 28
-0040-2 33
-0050-2 45
-0060-2 56
-0070-2 68
Resistor braking
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2
U
DC
P
max <
R
maximum power generated by the motor during braking
max
voltage over the resistor during braking, e.g.
DC
1.35 · 1.2 · 415 V DC (when supply voltage is 380 to 415 V AC),
1.35 · 1.2 · 500 V DC. (when supply voltage is 440 to 500 V AC) or
1.35 · 1.2 · 690 V DC (when supply voltage is 525 to 690 V AC).
resistor resistance (ohm)
) is sufficient for the application (see step 3
R
Brake resistor(s)
Type R
(ohm)
SACE08RE44 44
SACE08RE44 44
SACE08RE44 44
SACE08RE44 44
SACE15RE22 22
SACE15RE22 22
SACE15RE22 22
SACE15RE13 13
SAFUR90F575 8
SAFUR90F575 8
SAFUR80F500 6
SAFUR125F500 4
SAFUR125F500 4
2xSAFUR125F500 2
2xSAFUR125F500 2
2xSAFUR125F500 2
E P
R Rcont
(kJ) (kW)
210 1
210 1
210 1
210 1
420 2
420 2
420 2
435 2
1800 4.5
1800 4.5
2400 6
3600 9
3600 9
7200 18
7200 18
7200 18