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Issue:
How do I troubleshoot the Modbus Serial on the Altivar Process Drive?
Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)
Environment:
All serial numbers for Altivar Process Drive
Resolution:
Note: This FAQ goes over some basic checks and troubleshooting tips. For extended troubleshooting please refer to your drives Modbus Serial manual.
Drive Will Not Connect
How do I troubleshoot the Modbus Serial on the Altivar Process Drive?
Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)
Environment:
All serial numbers for Altivar Process Drive
Resolution:
Note: This FAQ goes over some basic checks and troubleshooting tips. For extended troubleshooting please refer to your drives Modbus Serial manual.
Drive Will Not Connect
- Installation
- Make sure Modbus cable (not Ethernet cable) is connected to the appropriate Modbus serial port.
- Pin Layout - Make sure to use proper pinouts
- Isolate any electrical interference
- Use conduits
- Separate control and power connections
- Add terminating resistors if the drive is at the end or the last of device in the network.
- Network
- Check for any duplicate addresses on the network.
- Check to make sure you have proper configured assemblies
- Programming
- Check Basic Settings on the drive. Make sure the following is set:
- Modbus Address
- Modbus Baud Rate
- Make sure drive is power cycled after any Communication settings are made.
- Check Basic Settings on the drive. Make sure the following is set:
- Troubleshooting
- Check LEDs on the drive
- The following figure describes the LEDs status for Modbus Field-bus monitoring:
- Eth NS (Embeded Modbus) - Indicates the Modbus serial link connection status
- Network
- Verify you can read from the drive
- Verify reading and write to correct Modbus registers
- Programming on the Drive
- Confirm drive is setup for Network Control
- Check Command and Reference Menu
- [Complete settings] [Command and Reference]
- Check Command and Reference Menu
- Confirm drive is setup for Network Control
- Troubleshooting
- Check Communication Map
- [Display] [Communication map]
- Check Command Channel
- Command Register
- Ref Freq Channel
- Ref Freq
- [Display] [Communication map]
- Check Communication Map
- Reference attached manuals for further troubleshooting
Released for:Schneider Electric Vietnam
