Zone Assignments

 

 

WARNING: This screen should not be changed without consulting SSi at 513-772-0060.

 

The zone assignment feature allows the Series 9010 program to change set points on all instruments of a multi-zone furnace.  The Series 9010 has temperature and atmosphere zone assignments for up to 5 zones.  The Series 9010 programmer looks for appropriate zone assignments whenever a set point is to be sent to the atmosphere or temperature controller.  The temperature set point is sent to every instrument number in the temperature zone assignment. 

 

If the ZONE_OFF opcode had been used in the program the set point sent to the specified zone instrument will have the offset added.  For example, assume a 4-zone pit furnace where the bottom zone usually has a lower set point, then the middle zones and the top zone usually has a higher set point.  The bottom zone temperature controller is assigned to zone 1, the middle temperature controllers to zones 2 and 3, and the top zone controller to zone 4. 

If the first three steps of a program are as shown below, then the bottom zone set point is 1725, the middle zones are 1750, and the top zone is 1800.

 

Step	opcode	Temperature	Atmosphere	Option
1	ZONE_OFF	-25		1
2	ZONE_OFF	50		4
3	SETPT	1750

 

The first step sets the offset for zone 1 to –25 degrees; therefore, the bottom zone controller would be sent a set point of 1725 when step 3 is executed.  Likewise step 2 sets the offset for zone 4 to 50 degrees.  The top zone then receives a set point of 1800.  The middle zone controller would receive the 1750. The temperature controller displayed on the status display is instrument #2.   If instrument #2 was the top zone controller then the Status Display would show the 1800-degree set point. 

When using the multi-zone offset feature, the atmosphere and temperature controller assigned as instruments 1 and 2 should be in zones that will not be offset.