Drive Profile
The Allen-Bradley 20BP170A0ANNANC0 PowerFlex 700 AC Drive represents a high-capacity solution within the 20B drive family, intended for applications where the motor load requires substantial current and dependable variable-speed operation.
Its 170 A output rating makes it suitable for larger motors and heavy industrial machinery. The drive's 90 kW normal-duty rating and 75 kW heavy-duty rating allow engineers to select the appropriate operating class according to the actual load profile.
The drive uses a 540 VDC pre-charge input. This is an important characteristic when planning an installation because the surrounding electrical system must provide the correct DC voltage and appropriate pre-charge, disconnect, protection, grounding, and maintenance provisions.
For motor control, the 20BP170A0ANNANC0 uses standard control with 24 V I/O. It supports sensorless vector operation, allowing the drive to estimate motor behavior without relying on an encoder. This can significantly simplify the installation for applications that do not require high-precision closed-loop speed control.
Correct motor data and tuning are particularly important when operating in vector mode. Proper commissioning allows the drive to establish a suitable motor model and achieve stable speed and torque response.
The drive provides approximately 0.1% of base-speed regulation across a 120:1 speed range in vector-control operation without feedback. This performance makes the configuration suitable for many conveyors, pumps, fans, mixers, and process machines.
The 20BP170A0ANNANC0 also offers flexible acceleration and deceleration programming. Two independent acceleration and deceleration values can be configured from 0 to 3600 seconds. This is useful when different machine operating conditions require different ramp profiles.
For demanding loads, the drive supports 110% overload for up to one minute and 150% overload for up to three seconds. Engineers should still consider motor characteristics, ambient temperature, duty cycle, ventilation, and actual process loading when determining whether the drive is appropriately sized.
An integrated EMC filter with common-mode choke helps manage electromagnetic interference. However, filtering alone does not replace proper installation practices. Grounding, motor-cable shielding, cable routing, cabinet construction, and separation between control and power wiring remain important for reliable system operation.
The drive is configured without a brake IGBT and internal brake resistor. If the connected motor becomes regenerative during rapid deceleration, the system designer should determine whether an external braking or regenerative solution is required.
The PowerFlex 700 20B family was discontinued in November 2023, making this model particularly relevant for existing equipment, replacement drives, retrofit projects, industrial maintenance, and spare-parts requirements. For replacement applications, the complete catalog number should be checked because seemingly similar PowerFlex 700 drives can differ in input configuration, control type, feedback, braking, communication, and filtering.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Allen-Bradley |
| Manufacturer | Rockwell Automation |
| Product Family | PowerFlex 700 |
| Series | PowerFlex 700 20B |
| Model | 20BP170A0ANNANC0 |
| Product Type | AC Drive / Variable Frequency Drive |
| Lifecycle | Discontinued |
| Input Voltage | 540 VDC |
| Input Configuration | DC Input with Pre-Charge |
| Input Phases | 3-phase |
| Output Phases | 3-phase |
| Output Current | 170 A |
| Normal-Duty Rating | 90 kW |
| Heavy-Duty Rating | 75 kW |
| Frame Size | Frame 6 |
| Control Type | Standard Control with 24 V I/O |
| Motor Control | Sensorless Vector / V/Hz / Vector Control |
| Feedback | None |
| Encoder | Not Included |
| HIM | No HIM / Blank Plate |
| Communication Module | None |
| Brake IGBT | None |
| Internal Brake Resistor | None |
| EMC Filtering | EMC Filter with Common-Mode Choke |
| Conformal Coating | Yes |
| Enclosure | IP20 / NEMA/UL Type 1 |
| Analog Inputs | 2 |
| Analog Outputs | 2 |
| Digital Inputs | 6 |
| Digital Outputs | 3 |
| Maximum Output Frequency | 400 Hz |
| Carrier Frequency | 2, 4, 8, and 10 kHz |
| Overload Capability | 110% for 1 minute / 150% for 3 seconds |
| Acceleration Time | 0–3600 s |
| Deceleration Time | 0–3600 s |
| Current Limit | Programmable from 20–160% of rated output current |
| Speed Regulation | Approximately 0.1% of base speed in vector mode without feedback |
| Torque Regulation | Approximately ±5% without feedback |
| Efficiency | Approximately 97.5% at rated current |
| Displacement Power Factor | Approximately 0.98 |
| Short-Circuit Rating | Up to 200,000 A symmetrical, subject to installation conditions |
| Stop Modes | Coast, DC Brake, Fast Brake, Ramp-to-Hold and S-Curve |
| Maximum Altitude Without Derating | 1000 m |
| Degree of Protection | IP20 |
| Dimensions | 976.3 × 403.9 × 275.5 mm |
| Weight | 71.44 kg (157.50 lb) |
Recommended Related Models
- Allen-Bradley 20BP140A0ANNANC0 — PowerFlex 700 AC Drive, 540 VDC, 140 A
- Allen-Bradley 20BP170A0ANNANC1 — PowerFlex 700 AC Drive, 540 VDC, 170 A, standard encoder feedback
- Allen-Bradley 20BP170A0ANNANA0 — PowerFlex 700 AC Drive, 540 VDC, 170 A, standard control configuration
- Allen-Bradley 20BP170A0ANNAND0 — PowerFlex 700 AC Drive, 540 VDC, 170 A, 120 V I/O configuration
- Allen-Bradley 20BP170A0AYNANC0 — PowerFlex 700 AC Drive, 540 VDC, 170 A, related braking configuration
- Allen-Bradley 20BC170A0ANNANA0 — PowerFlex 700 AC Drive, 400 VAC, 170 A
- Allen-Bradley 20BC170A0ANNANN0 — PowerFlex 700 AC Drive, 400 VAC, 170 A, no I/O configuration
When selecting a replacement, it is important to compare the complete catalog number rather than relying only on the 170 A rating. Input voltage, I/O type, feedback, braking, communications, and filtering can all affect compatibility.
Popular Related Models
Allen-Bradley 20BP140A0ANNANC0
A lower-current 540 VDC PowerFlex 700 configuration rated at 140 A. It is suitable when the motor load does not require the full 170 A capacity.
Allen-Bradley 20BP170A0ANNANC1
A closely related 170 A configuration with standard encoder feedback. It is a strong alternative for applications where more precise closed-loop speed control is required.
Allen-Bradley 20BP170A0ANNANA0
A closely related 170 A PowerFlex 700 configuration with the same general 540 VDC input and power class. It is useful when comparing catalog-code variations for existing systems.
Allen-Bradley 20BP170A0ANNAND0
A 170 A configuration using 120 V I/O, making it relevant where the control system requires a different I/O voltage arrangement.
Allen-Bradley 20BP170A0AYNANC0
A related 170 A PowerFlex 700 configuration with a different braking arrangement. It can be considered when the application requires a different regenerative-energy strategy.
Allen-Bradley 20BC170A0ANNANA0
A 170 A PowerFlex 700 configuration designed for 400 VAC input, making it a useful comparison for installations using an AC-line-input architecture rather than the 540 VDC configuration.
Allen-Bradley 20BC170A0ANNANN0
Another 170 A PowerFlex 700 configuration with 400 VAC input and no standard I/O, useful for specialized control architectures.
Allen-Bradley 20BP170A0ANNANC0
The exact model covered on this page, combining 170 A output, 540 VDC pre-charge input, 90 kW normal-duty capacity, 75 kW heavy-duty capacity, Frame 6 construction, standard 24 V I/O, sensorless vector control, no feedback, EMC filtering, and conformal-coated electronics.
