ABB ACS880-04F, Руководство по оборудованию, Страница: 169 / 172

Resistor braking 169
WARNING! If the drive is equipped with a brake chopper but the chopper is not
enabled by the parameter setting, the internal thermal protection of the drive
against resistor overheating is not in use. In this case, the brake resistor must be
disconnected.
Note : Some brake resistors are coated with oil film for protection. At the start-up, the
coating burns off and produces a little bit of smoke. Ensure proper ventilation at the start-
up.
Technical data

Ratings
P
brcont
Maximum continuous braking power. The braking is considered continuous if the braking time
exceeds 30 seconds.
R
min
The minimum allowed resistance value of the brake resistor
R Resistance value for the listed resistor assembly
E
R
Short energy pulse that the resistor assembly withstands every 400 seconds
P
Rcont
Continuous power (heat) dissipation of the resistor when placed correctly
The ratings apply at an ambient temperature of 40 °C (104 °F).

SAFUR resistors
The degree of protection of SAFUR resistors is IP00. The resistors are not UL listed. The
thermal time constant of the resistors is 555 seconds.
Drive type Internal brake
chopper
Example brake resistor(s)
P
brcont
R
min
Type R E
R
P
Rcont
kW ohm ohm kJ kW
U
N
= 400 V
ACS880-04F-504A-3 250 2.0 2xSAFUR125F500 2.00 7200 18
ACS880-04F-584A-3 315 1.3 2xSAFUR200F500 1.35 10800 27
ACS880-04F-649A-3 315 1.3 2xSAFUR200F500 1.35 10800 27
ACS880-04F-725A-3 400 0.7 3xSAFUR200F500 0.90 16200 40
ACS880-04F-820A-3 400 0.7 3xSAFUR200F500 0.90 16200 40
ACS880-04F-880A-3 400 0.7 3xSAFUR200F500 0.90 16200 40
U
N
= 500 V
ACS880-04F-459A-5 250 2.0 2xSAFUR125F500 2.00 7200 18
ACS880-04F-502A-5 250 2.0 2xSAFUR125F500 2.00 7200 18
ACS880-04F-582A-5 315 1.3 2xSAFUR200F500 1.35 10800 27
ACS880-04F-634A-5 315 1.3 2xSAFUR200F500 1.35 10800 27
ACS880-04F-715A-5 400 0.7 3xSAFUR200F500 0.90 16200 40
ACS880-04F-820A-5 400 0.7 3xSAFUR200F500 0.90 16200 40
ACS880-04F-880A-5 400 0.7 3xSAFUR200F500 0.90 16200 40
3AXD00000588487