Sounds to me like it's time for you to write a component model! While we have several models that are somewhat close, none of them do exactly as you suggest. Check out the TESS Controlller library for models close to the one you need.
Jeff
---
Jeff Thornton
President - TESS LLC
22 N. Carroll Street, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton@tess-inc.com
On 07/10/2012 1:00 pm, Hasan baig wrote:
Hi,I wish to model a real differential controller for my variable speed pump. The controller works as a standard differential controller. If the switch-on difference is reached, the pump is activated. When the temperature difference falls below the adjusted switch-off temperature difference, the respective relay switches off. When the switch-on temperature difference is reached, the pump is activated at full speed for 10 seconds. Then, the speed is reduced to the minimum pump speed value (factory setting = 30 %). If the temperature difference reaches the adjusted nominal temperature difference, the pump speed increases by one step (10 %). If the difference increases by the adjustable rise value, the pump speed increases by 10 % respectively until the maximum pump speed of 100 % is reached.Any suggestions on how to model this pump in TRNSYS ?regardsHasan