Trane TR200 Programming Manual page 199

Parameter Description
Example 2: Multi-zone, multi setpoint
The previous example can be used to illustrate the use of multi-zone, multi-setpoint control. If the zones require
different pressures for each VAV box, each setpoint may be specified in par.20-21
2 and par.20-23 Setpoint 3. By selecting
controller will increase the speed of the fan if any one of the feedbacks is below its setpoint and decrease the
speed of the fan if all feedbacks are above their individual setpoints.
20-21 Setpoint 1
Range:
0.000 [-999999.999 - 999999.999
Proc- ProcessCtrlUnit]
essCtrlU-
nit*
20-22 Setpoint 2
Range:
0.000 [-999999.999 - 999999.999
Proc- ProcessCtrlUnit]
essCtrlU-
nit*
NOTE: The setpoint reference entered here is added to any other references that are enabled (see par. group
3-1*).
20-23 Setpoint 3
Range:
0.000 [-999999.999 - 999999.999
Proc- ProcessCtrlUnit]
essCtrlU-
nit*
4-162
Multi-setpoint minimum
, [5], in par.20-20
Function:
Setpoint 1 is used in closed-loop mode to enter a setpoint reference that
is used by the adjustable frequency drive's PID controller. See the de-
scription of par.20-20 Feedback
NOTE: Setpoint reference entered here is added to any other references
that are enabled (see par. group 3-1*).
Function:
Setpoint 2 is used in closed-loop mode to enter a setpoint reference that
may be used by the adjustable frequency drive's PID controller. See the
Feedback Function
description of
Function:
Setpoint 3 is used in closed-loop mode to enter a setpoint reference that
may be used by the adjustable frequency drive's PID controller. See the
description of par.20-20 Feedback
NOTE
The setpoint reference entered here is added to any other references that are
enabled (see par. group 3-1*).
Setpoint 1, par.20-22
Feedback Function, the PID
Function.
, par.20-20 Feedback Function.
Function.
TR200 Programming Guide
Setpoint