OVERVIEW

Official designation: Allen-Bradley 20-COMM-S (PowerFlex Architecture Class, Communication Adapter)

Role/Application: Adapter providing RS485 DF1 communication for parameter adjustment and control of compatible PowerFlex 70 and 700 series drives.

KEY SPECS SUMMARY

Power: 275 mA at 5 Volts DC

Interfaces / Ports: 6-pin RS485 DFI connector, 20-pin DPI connector

Indicators: Status LEDs for communication and adapter status

Operating Temp: 0 degrees C to plus 50 degrees C

Platform / Compatibility: PowerFlex 70, 700, 750 (with carrier card)

Limit: Selectable baud rates (9600 to 76800 bps)

Lifecycle: Active Mature

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum selectable data rate for RS485 communication on the adapter?

A: The adapter supports a maximum selectable baud rate of 76800 bps.

Wiring & Installation:

Q: How is the node address and data rate configured on the 20-COMM-S adapter?

A: The node address and data rate are configured using internal switches on the module.

Troubleshooting & Compatibility:

Q: What are the two types of connectors present on the 20-COMM-S module?

A: The two connectors are a 6-pin RS485 DFI connector and a 20-pin DPI connector.

Replacement & Upgrades:

Q: Does the 20-COMM-S require an additional component to be used with PowerFlex 750 drives?

A: Yes, the PowerFlex 750 series requires the 20-750-20 communication carrier card.