发表于:2006-03-16 08:59:00
楼主
DANFOSS的PM3阀门, CVQ控制阀, EKC361控制器应用在氨冷却系统中,具休设制如下,发现没效果,通过其它调节阀对氨液位进行调整,可以将温度控制在-2°C,但当将设定值改为其它温度时,发现无效,甚至关掉EKC361电源也得到一样结果,量输出端又有交流24V脉冲信号.
Main Menu Set the required temperature -2 °C
r05 Temperature unit °C
r06 Input signal’s temperature influence
1 K
r09 Correction of the signal from Sair 0 K
r10 Correction of the signal from Saux 0 K
r12 Start/stop of refrigeration On
Alarm
A01 Upper deviation (above the temperature setting) 20 K
A02 Lower deviation (below the temperature setting) 20 K
A03 Alarm’s time delay 6 min
Regulating parameters
n01 Actuator max. temperature 41.1°C
n02 Actuator min. temperature 41.1°C
n03 Actuator type (3=CVQ 1.7-8BAR) 3
n04 P: Amplification factor Kp 19
n05 I: Integration time Tn (600=off) 24 s
n06 D: Differentiation time Td (0=off) 001 s
n07 Transient phenomenon
0: Ordinary control
1: Underswing minimised
2: No underswing 2
Miscellaneous
o09 Define output signal of analog output:
0: no signal, 1: 4 – 20 mA, 2: 0 – 20 mA 1
o10 Define output signal of analog input:
0: no signal, 1: 4 – 20 mA, 2: 0 – 20 mA 1
o12 Set supply voltage frequency 50 Hz
o17 Select sensor signal for display showing Air
o27 (Setting for the function o09 ) not used
Set the temperature value where the output signal
must be minimum (0 or 4 mA) – 35.0°C
o28 (Setting for the function o09 ) not used
Set the temperature value where the output signal
must be maximum (20 mA) 14.8°C