恒壓供水系統(tǒng) 全自動恒壓供水控制原理 當主水管網(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a16b-1100-0420/03aA16B-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
o-chs-443
AD-40E, Feder, O-CHS-244, 7H003012
Aus Vereinigte Staaten von Amerika
MQM152T2U, 410622-0880
MQM152T2U, 410622-1280
Nachi AC Servomotor, # MFM352H1V
fanuc operator panel, a02b-0084-c141, a16b-1310-0380/02b
Techtron 7541
Siemens Prozessor Digital Board, # r15c02d186
Muratec PC Board, # Z90-25090-50, NDK-1276PCB2
FANUC AC Servomotor, A06B-0545-B231
Charmilles 1994 Roboform c400 PC Board, 852 447
FANUC Operator Terminal Unit, # A02B-0051-C695
Charmilles Roboform 40 PC Power Board, 852 447
Panasonic PC Board, zuep 55382
Charmilles 1994 Roboform c400 PC Batterie-Board, 853 568 H
Yasnac Yaskawa JANCD-fc100b Platine df9200035-a0
Mitsubishi Platine # k3ca.73, bd625a807g53
A04B-0229-C238
088l3281
ABB DSQC 346b Servo Drive Unit, 3hab8101-6/01c
Siemens 6av7704-1bb10-0ac0
152LD/dhfd
CPCR-mr154k2/CPCR-mr154 k2
86/2P/8A/3.7Nm/SD
MFM352Q5V
UM853A
FANUC PC BOARD, a20b-2002-0154
hd20et-023, mit Encoder ts1400n37
A04B-0229-C405
CIMR-f7u25p5
86/2P/8A/3.7Nm/SDB
EN4-00443A
sbd2-10-2101-2933ba2/120-10
2EK16809-4/MD704-517, 2EM8513-4
1779-KFMR
5N-2500M
YB161100-BB/2
Typ # 9306-v0020-n
A06B-0373-B575 #7008
bds42102 3414w32b
Siemens 6av7704-2db10-0ac0
606pc3 CIMR-pca22p2
a04b-0218-c201
mn-355b, zuep 53221, Off Mazak u-44 Laser-MFG
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