Resistor braking
134
P
brcont
The drive and the chopper will withstand this continuous braking power. The braking is considered continuous if the
braking time exceeds 30 s.
Note: The braking energy transmitted to the specified resistor(s) in 400 seconds may not exceed E
R
.
R Resistance value for the listed resistor assembly. Note: This is also the minimum allowed resistance for the braking
resistor.
E
R
Short energy pulse that the resistor assembly withstands every 400 seconds. This energy will heat the resistor
element from 40°C (104°F) to the maximum allowable temperature.
P
Rcont
Continuous power (heat) dissipation of the resistor when placed correctly. Energy E
R
dissipates in 400 seconds.
1)
22 kW with standard 22 ohm resistor and 33 kW with 32…37 ohm resistor
All braking resistors must be installed outside the converter module. The SACE braking resistors are built in an IP21 metal
housing. The SAFUR braking resistors are built in an IP00 metal frame. Note: The SACE and SAFUR resistors are not UL
listed.
Resistor installation and wiring
All resistors must be installed outside the drive module in a place where they will
cool.
WARNING! The materials near the brake resistor must be non-flammable. The
surface temperature of the resistor is high. Air flowing from the resistor is of
hundreds of degrees Celsius. Protect the resistor against contact.
Use the cable type used for drive input cabling (see to chapter Technical data) to
ensure the input fuses will also protect the resistor cable. Alternatively, two-
conductor shielded cable with the same cross-sectional area can be used. The
maximum length of the resistor cable(s) is 10 m (33 ft). For the connections, see the
power connection diagram of the drive.
690 V units
-0011-7 8.0 SACE08RE44 44 210 1
-0016-7 11 SACE08RE44 44 210 1
-0020-7 16 SACE08RE44 44 210 1
-0025-7 20 SACE08RE44 44 210 1
-0030-7 28 SACE15RE22 22 420 2
-0040-7 22 / 33
1)
SACE15RE22 22 420 2
-0050-7 45 SACE15RE13 13 435 2
-0060-7 56 SACE15RE13 13 435 2
-0070-7 68 SAFUR90F575 8 1800 4.5
-0100-7 83 SAFUR90F575 8 1800 4.5
-0120-7 113 SAFUR80F500 6 2400 6
-0145-7 160 SAFUR80F500 6 2400 6
-0175-7 160 SAFUR80F500 6 2400 6
-0205-7 160 SAFUR80F500 6 2400 6
PDM code 00096931-J
ACS800-04 type
ACS800-U4 type
Braking power of the chopper and
the drive
Brake resistor(s)
P
brcont
(kW)
Type R
(ohm)
E
R
(kJ)
P
Rcont
(kW)
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