RS Components timer relay for compressor: 10 min ON, 5 min OFF, NO/NC outputs

Hi.
I`m new to this page, hope you can help me with a problem.
I need to control start/stop of a compressor with a electronic timer.
Compressor have an electronical controller with built-in option for remote control. I need an normal open(NO) and on normal closed switch(NC) to make this work.
I want to have compressor running continually with 10 minutes running and 5 minutes stop.
My only supplier of electronics is "RS Components".
Please see my attached drawing for details.
Sorry for my english,I`m Norwegian.

Do U wana Design a Chip Or U wana Buy?

I want to buy a unit i can program and adjust timespan as required.

Check here:
http://uk.rs-online.com/web/generalDisplay.html?id=info/timer

I think you want something like a "651" type, which leads to here:

http://uk.rs-online.com/web/c/?searchTerm=Time+Delay+Relays+651

Maybe this would suit (check the datasheet, I haven't in detail!):

http://uk.rs-online.com/web/p/time-delay-relays/7140023/
?