Danfoss AK-SM 800 IO Service guide

AK-SM 800 IO Offline Troubleshooting

1 | Department (slide master)

Online Check

1.From Network Nodes screen go to ‘Config Status’ tab

2.Each line item indicates a single module/controller

3.Verify all programmed modules are online

2 | Department (slide master)

IO Communication Issues

Initial Checks

Power

Does module exist?

Comm module rotary switch

Proper comm module type?

AK-SM 800 Checks

Proper channel enabled?

Wiring Issues

Does polarity matter?

EOL resistors

Daisy-chaining and 800 termination

Type of wire used

Problem Correction

Rescan

3 | Department (slide master)

Power

1.24Vac/dc required for comm module*

2.Solid green indicator at top if power ok

3.Individual Power LED on each module as well

4.Comm module requires connection to 2nd module to power

*Will power at lower voltages (i.e. 12V), but will not bring connected modules online

4 | Department (slide master)