Manual Operation And Auto-Tuning; Manual Operation; Auto-Tuning (At) - Honeywell DCP551 Mark ΙΙ User Manual

Chapter 6. OPERATION

6-5 Manual Operation and Auto-Tuning

Manual operation

Controller function operations
Programmer function operations

Auto-tuning (AT)

6-12
The ↑ ↑ and ↓ ↓ keys can be used to control instrument outputs in the MANUAL mode.
When outputs are indicated in the basic display status, only one digit in the output value
flashes. Increasing or decreasing the output value using ↑ ↑ and ↓ ↓ keys causes the actual
output to change accordingly. Unlike setting registration, there is no need to press the
ENTER key.
Use the ← ← and → → keys to move the flashing digit.
C35
Setup data is used to select smooth and preset output changes when going from
AUTO to MANUAL modes.
Changes from MANUAL to AUTO are smooth.
(Note, however, that when the integral time setting for a PID group PID parameter of 0
may cause abrupt changes.)
SP can be set manually when setup data
ate.
When SP is indicated in the basic display status, only one digit in the output value flash-
es. Increasing or decreasing the SP value using ↑ ↑ and ↓ ↓ keys causes the actual SP value
to change accordingly. Unlike setting registration, there is no need to press the ENTER
key.
Use the ← ← and → → keys to move the flashing digit.
C35
Regardless of setup data
modes are smooth.
Changes from MANUAL to AUTO program pattern SP are used and abrupt output
changes may occur.
Set values can automatically be written when using auto-tuning (AT) in the RUN,
HOLD, FAST and END modes during AUTO mode operation and PID groups (1 to 9,
A1 to A7 or constant value control) are being used.
In READY AUTO mode, the tuning points of PID parameters
tings can be used as SP to perform auto-tuning of PID groups A1 to A7 values.
PA08
Variable parameter
0 : AT is not performed.
1 : A general AT operation of a PID group used in a mode other than READY
mode
2 : AT of PID values that do not easily overshoot can be written to a PID group
used in a mode other than READY mode.
3 : A standard AT operation is repeatedly performed on PID groups A1 to A7 in
READY mode.
4 : Repeated AT of PID values that do not easily overshoot can be written to
PID groups A1 to A7 used in READY mode.
• During auto-tuning, program run time stops. Thus the RUN and FAST modes are
changed to the HOLD mode.
C21
is set to 0 and programmer functions oper-
setting, output changes going from AUTO to MANUAL
allows the following selections:
tP-A1 tP-A7
to set-