User manual

AC Adjustable Frequency Drives
PowerFlex 70
55
Medium Duty External Dynamic Brake Resistors
These resistors provide a larger duty cycle capability than the internal type. Includes an internal thermal switch for use in external safety
circuit.
PowerFlex 70 AC Drive Medium Duty External DB Resistor
Normal
Duty
✶
kW (Hp)
Heavy
Duty
✶
kW (Hp)
Min DB
Res
Ohms
±10%
Part Number
Resistance
7
Ohms
±5%
Continuou
s Power
kW
Max
Energy
kJ
Max
Braking
Torque
% of ND
Motor
Application Type 1 Application Type 2
Braking
Torque
% of ND
Motor Duty Cycle
Braking
Torque
% of ND
Motor Duty Cycle
200…240 Volt AC Input Drives
0.37 (0.5) 0.25 (0.33) 33
AK-R2-091P500 91 0.086 17 293% 100% 46% 150% 31%
0.75 (1.0) 0.55 (0.75) 33
AK-R2-091P500 91 0.086 17 218% 100% 23% 150% 15%
1.5 (2.0) 1.1 (1.5) 33 AK-R2-091P500 91 0.086 17 109% 100% 11% 109% 11%
2.2 (3.0) 1.5 (2.0) 33
AK-R2-047P500 47 0.166 33 144% 100% 15% 144% 11%
4.0 (5.0) 3.0 (3.0) 30
AK-R2-047P500 47 0.166 33 79% 79% 11% N/A N/A
5.5 (7.5) 4.0 (5.0) 23 AK-R2-030P1K2 30 0.26 52 90% 90% 10% N/A N/A
7.5 (10) 5.5 (7.5) 23
AK-R2-030P1K2 30 0.26 52 66% 66% 10% N/A N/A
400…480 Volt AC Input Drives
0.37 (0.5) 0.25 (0.33) 68
AK-R2-360P500 360 0.086 17 305% 100% 47% 150% 31%
0.75 (1.0) 0.55 (0.75) 68
AK-R2-360P500 360 0.086 17 220% 100% 23% 150% 15%
1.5 (2.0) 1.1 (1.5) 68 AK-R2-360P500 360 0.086 17 110% 100% 12% 110% 11%
2.2 (3.0) 1.5 (2.0) 68
AK-R2-120P1K2 120 0.26 52 197% 100% 24% 150% 16%
4.0 (5.0) 3.0 (3.0) 68 AK-R2-120P1K2 120 0.26 52 124% 100% 13% 124% 10%
5.5 (7.5) 4.0 (5.0) 74
AK-R2-120P1K2 120 0.26 52 90% 90% 10% N/A N/A
7.5 (10) 5.5 (7.5) 74 AK-R2-120P1K2 120 0.26 52 66% 66% 10% N/A N/A
11 (15) ‡ 7.5 (10) 44
‡ 60 0.52 104 90% 90% 10% N/A N/A
15 (20) ‡ 11 (15) ‡ 31 ‡ 60 0.52 104 66% 66% 10% N/A N/A
500…600 Volt AC Input Drives
0.37 (0.5) 0.25 (0.33) 117
AK-R2-360P500 360 0.086 17 274% 100% 46% 150% 31%
0.75 (1.0) 0.55 (0.75) 117 AK-R2-360P500 360 0.086 17 251% 100% 23% 150% 15%
1.5 (2.0) 1.1 (1.5) 117
AK-R2-360P500 360 0.086 17 172% 100% 11% 150% 8%
2.2 (3.0) 1.5 (2.0) 117 AK-R2-120P1K2 120 0.26 52 193% 100% 24% 150% 16%
4.0 (5.0) 3.0 (3.0) 80
AK-R2-120P1K2 120 0.26 52 185% 100% 13% 150% 9%
5.5 (7.5) 4.0 (5.0) 80 AK-R2-120P1K2 120 0.26 52 141% 100% 9% 141% 7%
7.5 (10) 5.5 (7.5) 80
AK-R2-120P1K2 120 0.26 52 103% 100% 7% 103% 7%
11 (15) ‡ 7.5 (10) 48 ‡ 60 0.52 104 141% 100% 9% 141% 7%
15 (20) ‡ 11 (15) ‡ 48
‡ 60 0.52 104 103% 100% 7% 103% 7%
✶ Duty cycle listed is based on full speed to zero speed deceleration. For constant regen at full speed, duty cycle capability is half of what is listed. Application
Type 1 represents maximum capability up to 100% braking torque where possible. Application Type 2 represents more than 100% braking torque where
possible, up to a maximum of 150%.
7 Always check resistor ohms against minimum resistance for drive being used.
‡ For 11 and 15 kW (15 and 20 Hp) applications, use two 7.5 kW (10 Hp) size resistors wired in parallel.
External Dynamic Brake Resistor Kits
Drive Input
Voltage
Brake Resistance Continous Power
Cat. No.
Ω
W
200...240V ac
30 260
AK-R2-030P1K2
47 166
AK-R2-047P500
91 86 AK-R2-091P500
480...600V ac
120 260
AK-R2-120P1K2
360 86 AK-R2-360P500