DGC ZM-DGC900 Manual page 18

parameter code; the lower screen shows the value of the parameters. Then press ▲or ▼button to
modify the value of the parameter. When finished, press the button PAR, meters will show next
code and the value of the parameters in order. Revised data will be saved in the memory of the
instrument.
After showing the last parameter or no operation in 16 seconds, the instrument will return to the
measured value (PV) display state.
（4）Code and meaning of regulation parameter
d. PID self-setting
Before the meter starts working, the best PID adjust parameters should be set, then the control
precision can be ensured.
Theoretically, systems on different settings have different ideal PID parameters. Therefore,
before start the PID self-setting, you should set the SV to the exact parameter that the user needs.
When the meter stay in the state of auto-control, set the PID self-setting ( the code is tunE)to
ON, then the PID self-setting works, and AT lamp is on.
In the PID self-setting process, when the self-setting is set to OFF, the process will stop. At the
same time, the top heater's position is being adjusted, so the measured value is not vibrating. After
1.5 periods of vibration, the PID self-setting is completed. Then the AT lamp is off. The meter can
calculate the best PID parameter and save it in the meter according to the vibration period and
Order Parameter
code
amplitude.
If the system can't give vibrate response during the PID self-setting, the PID self-setting can't
finish successfully. As different systems have different response periods, the time of PID self-
setting ranges from several seconds to several hours. The time is affected by the system, not the
meter.
1 C F
2 Prog
3 SP
4 TunE
5 AU
6 AL2
7 HyS1
8 HyS2
9 ProP
10 Intt
11
dEr と
12 rElc
13 Db
parameter
Measurement
unit
Curve procedure
control
Basic settings
PID self-setting
First alarming
value
Second alarming
value
First alarming D-
value
Second alarming
D-value
Heating
proposition area
Integral time
Differential time
Cooling coefi
Static area
coefficient
Adjustment range
ldLE / Run / Hold
SPH-SPL
OFF
ON
Input signal range
Input signal range
1～300℃
1～300℃
1～2000℃
OFF，1～8000 s
OFF，1～999 s
0.1～10.0
0.1～10.0
18
Note
Celsius or Fahrenheit
Stop / Start / Pause
Stop PID
Start PID
Optional function
Optional function
No display when Ctrl is set at
ON/OFF
No display when Ctrl is set at
ON/OFF
Display when heating/cooling
Display when heating/cooling