535-PROF User's Manual
Chapter 7
101
Applications
9.
RSP FIXED
determines the signal to which the controller will revert when a
lost RSP is restored (fixed). Options are to stay in local or automatically return
to remote setpoint.
10. To bias or ratio the remote setpoint value:
a. Go to the
TUNING
menu.
b. Set
RSP BIAS
and
RSP RATIO
values.
Basic Operating Procedures
After configuring the hardware and software, the remote setpoint can be selected
by either of two methods:
•
Go to
TUNING
menu,
REMOTE SP
parameter, and set it to REMOTE SP.
•
Use a digital input
K. MULTIPLE SETPOINTS
The 535 can to store up to eight local setpoints and use a remote setpoint. One
application of this feature is configuring the controller to restrict operators to
discrete setpoint choices. The 535 can also store multiple sets of PID parameters
(see next section).
Software Configuration
1. Go to the
SPECIAL
menu.
2. Set
NO. OF SP
to the number of local setpoints desired.
3. Go to the
TUNING
menu. Access the
SP SELECT
parameter. Use
and
to select the desired local setpoint.
4. To link the PID sets to the corresponding local setpoint:
Set
NO. OF PID
to SP NUMBER.
For details on multiple sets of PID, refer to the next section in this chapter.
Basic Operating Procedures
To select a set point, go to the
TUNING
menu, access the
SP SELECT
parameters, and scroll through the setpoints. The displayed setpoint becomes
active after two second of key inactivity.
The digital inputs can also be used to select the active setpoints. A single digital
input may be used for selecting the second setpoint, SP2. A set of four digital
inputs may be used, to select up to 8 setpoints (see the section in this Chapter
in Digital Inputs).
L. MULTIPLE SETS OF PID VALUES
The 535 has the ability to store up to eight sets of PID values. This can be a
valuable feature for operating the controller under conditions which require
different tuning parameters for optimal control. There are various methods of
selecting which set should be active. These methods are explained in this section.
Software Configuration
1. Go to the
TUNING
menu.
2.
NO.OF PID
is the desired number of PID sets to be stored. SP VALUE
automatically sets this value equal to the number of stored local setpoints
