Cummins/Onan — Untitled Procedure

For these Cummins/Onan models: RSS100, RSS200.

Applies to: Cummins Onan Rss100, Cummins Onan Rss200

Procedure

1. Verify that the Exercise LED is off.
2. To set and exercise period that will start 12 hours from now and repeat every 28 days
3. Operation
4. To start an immediate exercise period and have it repeat, press and hold the Set
5. Record the exercise start time for future reference.
6. While the transfer switch is connected to the utility, utility power fails. The Utility Connected
7. The time delay engine start (TDES) begins.
8. When the TDES expires, the internal start contact closes P5-6 and P5-7, sending a start
9. Operation
10. When the generator set starts and produces power, the Generator Power Available LED
11. A Time Delay Normal-to-Emergency (TDNE) begins.
12. After the TDNE timer expires, the Open Normal (P5-1) and Close Emergency (P5-4) output
13. Limit switch ASW removes the ground signal from P4-7, signaling that the transfer switch
14. The load is transferred to the generator.
15. The utility returns. The Utility Power Available LED lights.
16. A time delay emergency to normal (TDEN) begins.
17. After the TDEN timer expires, the Open Emergency (P5-3) and Close Normal (P5-2) output
18. Limit switch BSW removes the ground signal from P4-8, signaling the ATS has
19. The control starts the Time Delay Engine Cooldown (TDEC) timer.
20. When the TDEC timer expires, the P5-6 to P5-7 contact opens, the generator set stops
21. The load is retransferred to the utility.
22. Operation
23. While the transfer switch is connected to the utility, the utility power fails. After a three
24. After the generator warms up (five second TDNE), the generator control signals the relay

Source: manual:Onan-RSS_ATS_OwnerManual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.