Yudian AI Series User Manual

12
5. PARAMETERS AND SETTINGS
5.1 The Full Parameter Table
Code Name Description
Setting
Range
HIAL High limit alarm
Alarm is triggered when PV (Process Value) >HIAL;
alarm is released when PV<HIAL-dF;
To disable high limit alarm, set HIAL=9999
Every alarm can be defined to control AL1,AL2,AU1,AU2
-1999～
+9999
units or
1℃
LoAL Low limit alarm
Alarm triggered when PV<LoAL;
alarm released when PV>LoAL+dF
Set LoAL =-1999 can disable low limit alarm
dHAL
Deviation high
alarm
Alarm triggered when PV-SV>dHAL;
alarm released when PV-SV<dHAL-dF
Set HdAL=9999 can disable deviation high alarm.
When on/off control mode is used, dHAL and dLAL is for second high alarm
and low alarm.
0～9999
units or
0～
999.9℃
dLAL
Deviation low
alarm
Alarm triggered when SV-PV>dLAL;
alarm released when SV-PV<dLAL-dF
Set dHAL=9999,when temperature is 999.9C,alarm is cancelled
dF
Alarm
hysteresis
Avoid frequent alarm on-off action because of the fluctuation of PV
E.g.: Set HIAL>800C,dF=2.0C
1. in normal status,when HIAL>800C, it alarms
2. in high alarm status, when PV<798C, alarms is cancelled
E.g: Set SV=700c,,dF=2.0C for heating
1.in run status,when PV>700C, it breaks
2.in stop status, when PV<698C, it reheats.
For on/off control mode,,the hgiher dF, the longer period,the lower accuracy.dF
won’t influence AI control. But when do AT, not to make too
high dF. The
adviced dF is 2-3times to PV.
0～2000
units or
0.1℃
CtrL Control mode
CtrL=0: on-off control. For situation not requiring high precision;
CtrL=1: AI MPt control. Allowed to quick activate auto-tuning (pressing
in basic display status.)
CtrL=2: AI MPt control. Activate auto-tuning.
CtrL=3: After auto-
tuning finished, the instrument automatically set CtrL=3, and
quick auto-tuning function is disabled.
CtrL=4: Comparing with the control mode of CtrL=3, Parameter P is defined as
10 times as its original value. Ex., if set P=5 incase of Ctrl=3 and set P=50
incase of Ctrl=5, then these 2 setting have then same control effect. In the
application of rapidly changed temperature (changes by more than 100℃
/second), pr
essure or flow control, or in the application where inverter is used
to control water pressure, P is often very small, even smaller than 1. If CtrL is
set to 4, then parameter P can be enlarged 10 times, and so finer control is
obtained.
0～4

Yudian AI Series Specifications

General

Control Mode	On/Off
Input Type	Thermocouple (K, S, T, E, J, B, N), RTD (Pt100, Cu50), Linear Current (4-20mA), Linear Voltage (0-5V, 1-5V)
Output Type	Relay, SSR, Linear Current (4-20mA)
Power Supply	AC 90-260V, 50/60Hz or DC 24V
Communication	RS485 Modbus RTU
Accuracy	±0.2%FS
Operating Temperature	0-50°C
Storage Temperature	-20-60°C
Humidity	85% RH (non-condensing)
Protection	IP65 (Front Panel)