User guide

I-E67-84-1B February,2002 11-1
SECTION 11 - SETPOINT/TUNE MODE
INTRODUCTION
The Setpoint/Tune Mode of Operation provides a
direct method to tune relay output parameters.
Though this mode of operation can not be used
to change the function a relay, it does
provide the ability to change relay parameters
pertinent to process control. To change the
relay output function, see Section 8,
Configure Mode.
SETPOINT/TUNE STATES OF OPERATION
The Setpoint/Tune Mode consists of three
states of operation: RELAY1, RELAY2, and
RELAY3. Each state provides the ability to
update operational parameters for the
configured relay functions. For instead if
Relay Output One is configured to function as
a High Process Variable Setpoint, the
Setpoint, Deadband, and Time Delay will be
tunable parameters available in the
Setpoint/Tune Relay One State of Operation.
Since the tunable parameters are dependent on
the configured relay function, the following
sections will only describe the adjustment of
these parameters.
Setpoint Relay Output (Basic/Advanced)
A Setpoint Relay Output can be configured to
energize when the Process Variable or
Temperature exceeds (i.e., a High Setpoint) or
falls below (i.e., a Low Setpoint) a defined
level. Valid Setpoint values are limited to
the Process Variable and/or Temperature range
of the TB84PH Advantage Series analyzer. See
Table 1-3, Specifications, for analyzer range
values.