User manual

AC Adjustable Frequency Drives
PowerFlex 70
54
Dynamic Brake Resistors
Small Duty Internal Dynamic Brake Resistors
Limited duty resistors mount directly to the back surface of the drive and require no extra panel space. Internal resistors are non-
destructive and do not require a resistor overheat external safety circuit.
PowerFlex 70 AC Drive Small Duty Internal DB Resistor
Normal
Duty
✶
kW (Hp)
Heavy
Duty
✶
kW (Hp)
Min DB
Res
Ohms
±10%
Part Number
Resistance
7
Ohms ±5%
Continuous
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
20AB-DB1-A 62 0.048 8.3 307% 100% 25.9% 150% 17.3%
0.75 (1.0) 0.55 (0.75) 33
20AB-DB1-A 62 0.048 7.3 300% 100% 12.8% 150% 8.5%
1.5 (2.0) 1.1 (1.5) 33 20AB-DB1-B 62 0.028 0.8 160% 100% 3.7% 150% 2.5%
2.2 (3.0) 1.5 (2.0) 33
20AB-DB1-B 62 0.028 0.8 109% 100% 2.5% 109% 2.3%
4.0 (5.0) 3.0 (3.0) 30 20AB-DB1-C 62 0.040 0.8 60% 60% 3.3% N/A N/A
5.5 (7.5) 4.0 (5.0) 23
20AB-DB1-D 22 0.036 0.9 117% 100% 1.3% 117% 1.1%
7.5 (10) 5.5 (7.5) 23 20AB-DB1-D 22 0.036 0.9 86% 86% 1.1% N/A N/A
400…480 Volt AC Input Drives
0.37 (0.5) 0.25 (0.33) 68
20AD-DB1-A 115 0.048 8.3 320% 100% 25.9% 150% 17.3%
0.75 (1.0) 0.55 (0.75) 68 20AD-DB1-A 115 0.048 9.0 259% 100% 12.8% 150% 8.5%
1.5 (2.0) 1.1 (1.5) 68
20AD-DB1-A 115 0.048 2.4 243% 100% 6.4% 150% 4.3%
2.2 (3.0) 1.5 (2.0) 68 20AD-DB1-B 115 0.028 0.9 206% 100% 2.5% 150% 1.7%
4.0 (5.0) 3.0 (3.0) 68
20AD-DB1-B 115 0.028 0.9 129% 100% 1.4% 129% 1.1%
5.5 (7.5) 4.0 (5.0) 74 20AD-DB1-C 115 0.04 0.9 94% 94% 1.5% N/A N/A
7.5 (10) 5.5 (7.5) 74
20AD-DB1-C 115 0.04 0.9 69% 69% 1.5% N/A N/A
11 (15) ‡ 7.5 (10) 44 20AD-DB1-D 62 0.036 0.8 87% 87% 0.8% N/A N/A
15 (20) ‡ 11 (15) ‡ 31
20AD-DB1-D 62 0.036 0.8 64% 64% 0.8% N/A N/A
500…600 Volt AC Input Drives
0.37 (0.5) 0.25 (0.33) 117
20AD-DB1-A 115 0.048 8.3 287% 100% 25.9% 150% 17.3%
0.75 (1.0) 0.55 (0.75) 117
20AD-DB1-A 115 0.048 9.0 263% 100% 12.8% 150% 8.5%
1.5 (2.0) 1.1 (1.5) 117 20AD-DB1-A 115 0.048 2.4 243% 100% 6.4% 150% 4.3%
2.2 (3.0) 1.5 (2.0) 117
20AD-DB1-B 115 0.028 0.9 202% 100% 2.5% 150% 1.7%
4.0 (5.0) 3.0 (3.0) 80 20AD-DB1-B 115 0.028 0.9 193% 100% 1.4% 150% 0.9%
5.5 (7.5) 4.0 (5.0) 80
20AD-DB1-C 115 0.04 0.9 147% 100% 1.5% 147% 1.0%
7.5 (10) 5.5 (7.5) 80 20AD-DB1-C 115 0.04 0.9 108% 100% 1.1% 108% 1.0%
11 (15) 7.5 (10) 48
N/A N/A N/A N/A N/A N/A N/A N/A N/A
15 (20) 11 (15) 48 N/A N/A N/A N/A N/A N/A N/A N/A N/A
✶ 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.
Internal Dynamic Brake Resistor Kits
Drive Input
Voltage
Brake Resistance
Frame
Cat. No.
Ω
200...240V ac
62
A
20AB-DB1-A
B
20AB-DB1-B
C 20AB-DB1-C
22 D
20AB-DB1-D
380...480V ac
115
A 20AD-DB1-A
B
20AD-DB1-B
C 20AD-DB1-C
62 D
20AD-DB1-D
600V ac
115
A 20AD-DB1-A
B
20AD-DB1-B
C 20AD-DB1-C
D
Not Available