Chopper Data / Resistor Selection Table - ABB ACSM1 Hardware Manual

84
WARNING! Never use a braking resistor with a resistance below the value specified
for the particular regen supply module type. The regen supply module and the
chopper are not able to handle the overcurrent caused by the low resistance.
• The maximum braking power must not exceed P
• The average braking power must not exceed P
• The braking energy must not exceed the energy dissipation capacity of the
selected resistor
• It is highly recommended that the resistor be protected from thermal overload;
see the section

Chopper data / Resistor selection table

The ratings apply at an ambient temperature of 40°C (104°F).
Supply module
type ACSM1-
204xx...
-07A0-4
-016A-4
-031A-4
-046A-4
-090A-4
P
brcont
P
brmax
R
min
R
P
n
E
pulse
The braking resistors are protected to IP20. Refer to page
sizes and tightening torques for the resistors.
Resistor braking
Contactor protection of regen supply module
Internal braking chopper
P P R
brcont brmax min
(kW) (kW) (ohm)
2.6 5.5 120
9.0 14.6 40
18.0 30.7 20
26.4 43.9 13
The internal chopper will withstand this continuous braking power. The braking is considered
continuous if the braking time exceeds 30 seconds.
Maximum braking power of the chopper. The chopper will withstand this braking power for 1
second within every 10 seconds. Note: The listed resistors will withstand this braking power
for 1 second within every 120 seconds.
The minimum allowed resistance of the braking resistor.
Resistance of the listed resistor.
Continuous power (heat) dissipation of the listed resistor when cooled naturally in a vertical
position.
Energy pulse the listed resistor will withstand.
brcont
Example braking resistor
Type
JBR-01
(Danotherm CAR 155 D T 414 120R)
JBR-04
(Danotherm CBR-V 210 D T 415 40R)
JBR-05
(Danotherm CBR-V 330 D T 415 20R)
JBR-06
(Danotherm CBR-V 460 D HT 415 13R)
at any point
brmax
below.
R
(ohm)
120
40
20
13
99 for dimensions, wire
P E
n pulse
(W) (kJ)
105 22
360 73
570 77
790 132
PDM-425726