PV Switching

 

PV Switching allows the 9130 to use two (2) analog inputs as a process variable source, if necessary.  It can be customized in any combination of high or low signals for loops 1, 2, or 3.  The 9130 controller normally only uses loop 1 for temperature control, so PID loop 2 or 3 must be modified so that it has a
control source.  In order for the PV signal to be switched, both PV signals must be above or below the switch point and must satisfy any applicable hysteresis.

 

PV Switch Value

This is the switch value.  This is the value that will determine when the switch happens.  The range is -300 – 30000.

 

PV Switch Hysteresis

This is the hysteresis for the switch.  This will help prevent the 910 from potentially switching back and forth between the two signals.  The range is 0 – 30000.

 

PV Switch Active Loop

This field is not modifiable.  It will display the current active loop (Loop 1 – Loop 3).