恒壓供水系統(tǒng) 全自動恒壓供水控制原理 當(dāng)主水管網(wǎng)壓力傳感器的壓力信號4~20mA送給數(shù)字PID控制器，控制器根據(jù)壓力設(shè)定值與實際檢測值進行PID運算，并給出信號直接控制變頻器的轉(zhuǎn)速以使管網(wǎng)的壓力穩(wěn)定。當(dāng)用水量不是很大時，一臺泵在變頻器的控制下穩(wěn)定運行；當(dāng)用水量大到變頻器全速運行也不能保證管網(wǎng)的壓力穩(wěn)定時，控制器的壓力下限信號與變頻器的高速信號同時被PLC檢測到，PLC自動將原工作在變頻狀態(tài)下的泵，投入到工頻運行，以保持壓力的連續(xù)性，同時將一臺備用的泵用變頻器起動后投入運行，以加大管網(wǎng)的供水量，保證壓力穩(wěn)定。若兩臺泵運轉(zhuǎn)仍，則依次將變頻工作狀態(tài)下的泵投入到工頻運行，而將另一臺備用泵投入變頻運行。當(dāng)用水量減少時，首先表現(xiàn)為變頻器已工作在最低速信號有效，這時壓力上限信號如仍出現(xiàn)，PLC首先將工頻運行的泵停掉，以減少供水量。當(dāng)上述兩個信號仍存在時，PLC再停掉一臺工頻運行的電機，直到最后一臺泵用主頻器恒壓供水[4]。另外，控制系統(tǒng)設(shè)兩臺泵為一組，每臺泵的電機累計運行時間可顯示，24小時輪換一次，既保證供水系統(tǒng)有備用泵，又保證系統(tǒng)的泵有相同的運行時間，確保了泵的可靠壽命Yaskawa USAPEM - 07yrs11 a16b-2201-0440/07b
T3000, 3 kVA, 230-460/115
a02b-0072-c027, a61l-0001-0087
ICC-6L6-HS1
e0105-566-056-5, e4809-77-087-d
A06B-0373-B569 #7076
3afs460-025sf
12/2000, # a06b-0142-b575 - R, a860-0360-v501
GL-5PV8-PC1
A02B-0279-C081/MA
Modicon ICC 3220 flexible Automation Steuerung, # 100-304
Sameca 0.55 KW AC Motor ls80l1
Panasonic PC Board, zuep 80561
PS 240/a, 24633
a20b-1004-0390/04a
rl-10002
1ft6082-1af71-1eh1
0608830264-ad1
145803-01, 145802, REV 09
jefmc-h014
cack-sr15sb1
rdn8c-br-03, abk011
Aus Vereinigte Staaten von Amerika
JPAC-c026/JPAC-c026.1502, etc005030
Marposs 6322602950, 6840040546
bn624a771g51
Yaskawa PC Board CACR-SRCA 20bbs
Siemens 142-1bd22-0xb0
Allen Bradley Power Supply Unit, # 8000-pg2, 90684203
Mitsubishi Circuit Board, sx-cpu2, bd625a552h04
Okuma Ether Board, e4809-045-234-a, 1911-2911-0221009
FANUC PC BOARD, a16b-1100-0420/02a
FANUC PC BOARD, a20b-8100-0880/01a
Yaskawa USAPEM - 07YRS21
RCP2-Beauftragten-A-P-5-100-P1-N-FT
MC446-1/MC446A-1, BN624A976G51
A06B-0313-B703 #0075, A860-0304-T113
a06b-0317-b272
a16b-1100-0420/03a
A16B-3200-0270/06A
a16b-3200-0420/11e
CACR-ir03sfb
905462-02
bd625a352
TVM 2.1-050-220/300-W1
1RA29020
20AD-RY1
a80l-0001-0271-03
e4809-045-060b
hf-h154bs
a06b-0314-b005
c-1000, e4809-045-060b
MQM082T2U, 410622-0870
c-800, e4809-045-060b
3hab8101-8/15c
a16b-2201-0640/02a,
AX9000GH
ha103cs
3.2-020-300WO
a860-0382-t255
RCP2-C
3-711-2704g
A-ryung Kühlmittelpumpe, 400w, acp-400f
Mitsubishi PC Board, bd625a353h04, frs-gb2
vfp1-4095up-b1
Daykin Transformator Modell # DIFP - 0707
3hab8101-3 11a
CSZ SP, E401331
D2751A9011 2/2
6sc6103-0sn30, 462 011.9087.30
sbd2-10-1100-2933ba2/120-10
sbd2-10-1100-2042a2/120-10
mo1-18vrs-nn, mtc-r02.1-m1-a2-a2-nn-fw
g34901-a1015 h2-c1
a16b-3200-0326/07d
a16b-3200-0326/11f
6063-01-802, Mod # s-6100-q-h00
UM870D
acp-400f
HG1H-SA12BEH-MK1409-S5-Z
c035 2, etc0047 80
50 70 132g, Material 719a
dja34400e53
1fk6060-6af71-1eh0
MQM082T2U, 410622-1270
A06B-0372-B144
163-237300
RX312B/RX312, BN634A589G53
Panasonic PC Board, zuep 55411
Fidia M2
a7-1-30235-1c
6fx1121-4bb03
Mitsubishi PC Board, bn624a642g51a, se-cpu31
hr353/hr353b, bn634a911g53
PCB PIEZOTRONICS 10,000 LB. Cap. W?gezelle, 1303-103-03A
Mitsubishi ks-6mb212-02
A16B-2200-0782/03A
04-MU12, Feedback: tfue - 05ZC7
b6101a-rtm01
6av7704-0bb100ac0
icc-5000-cnc
e685000f0b1
a06b-0314-b031
icc-5000-cnc
A06B-0162-B175 #0003
163-236010, 163-265202
Watt Drive Gear Motor, SU 50b 63n4
ESA-J1003A23-21
PC0185, 185A, AS-185A-000
FANUC AC Servo Amplifier Unit, # a06b-6066-h222
FANUC PC BOARD, a16b-1210-0370/01a
a02b-0118-b006, w/a16b-2200-0490/07d, a16b-2300-0021/02b
RG 151060
6sn1135-1ba11-0ea0
ha100cs
SS9MS11A1A0A
hc-sfs81
cm5-2 A-R-I-V - AQQV
ICC-6L6-HS2
SS7B-351MD0R
1ft6082-1af71-1ag1
CACR-hr05aab12
0220-40548-9001
0266, mbi02-02
06a6bbs
A06B-0142-B675 #0003, A860-0360-T061
6SN1135-1BA11-0EA0
401-4003-024
Charmilles Platine 852 449
A06B-0142-B575, A860-0360-V501
pi-07b-68-2gm0l1-8572c
8304820032/7FE4156
24248SC
15" Christensen lx15
415-0177-002e
175Q56H5
SGDH - 05aey336 mit JUSP-ns115y22
Fuji lc-m-3w44uu/lcm3w44uu
Mod # 10-051-r-1
sc-200
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