恒壓供水系統 全自動恒壓供水控制原理 當主水管網壓力傳感器的壓力信號4~20mA送給數字PID控制器，控制器根據壓力設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速以使管網的壓力穩定。當用水量不是很大時，一臺泵在變頻器的控制下穩定運行；當用水量大到變頻器全速運行也不能保證管網的壓力穩定時，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下的泵，投入到工頻運行，以保持壓力的連續性，同時將一臺備用的泵用變頻器起動后投入運行，以加大管網的供水量，保證壓力穩定。若兩臺泵運轉仍，則依次將變頻工作狀態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，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，控制系統設兩臺泵為一組，每臺泵的電機累計運行時間可顯示，24小時輪換一次，既保證供水系統有備用泵，又保證系統的泵有相同的運行時間，確保了泵的可靠壽命。1785-L20B 849-ZOD32
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VS0200/24vdc VS 0200 SR 0100
7E89040-003, 7723345-UB, ETH21RSC5
7901896TB, EBK50TCFIY0003
F856 .25hp 1/4hp 440v 1725rpm 801621190-2
Automotive Armature, 9312
27J0701, K55HXBPH-6161
A20B-2901-0050
Siemens 6ES7340-1CH00-0AE0
BEBFLT-102-X
FU-95
AS-E680-904
EC63D-A-1-X42M-90A-R-15-10-0
WEU262222
CSF-17-80-2A-R-SP, HW9381169-1
HM4D2A607
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B240 AF24 US, B2AF0008
A06B-6050-H303
HW9480228-A/229-A
104-C30DJ22
6ES5482-8MA13
Q45ULIU64BCRQ6
GE Fanuc A20B-2000-0360/03B 0270
Allen Bradley, 1336-MOD-L3
Parker, PGALP070031SBE000
Vickers, DG4V-3S-2N-M-FTWL-B5-60
Allen Bradley, 1204-TFB2, 74103-256-52
Dynapar 62-CHEF-0720-A0
Allen Bradley, 1784-KTX
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Wenglor, YP09PA3
AC Tech Lenze SD230
Reliance Electric 0-51862-1
DPS3207-P-3
A16B-1212-0222, A16B-1212-0222/02A
845GM-NXC8024
JUSP-WS15AA
ATC, 305E-015-A-1-0-PX
BL-135HA
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STI SMC-2
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Meltric 89-94043-174
Adept Model 133
Allen Bradley 520E-B0D
Morris 479U207-D11
ABB 450a
Durant, 6-YE-40724-404-ER
Allen Bradley, 1784-PCM2, 96851684
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2706-PDHPM
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GF2013AG
603397-108, ACC-24E2
XX930S1A2M12
GE, C200ALG240-JE
Baldor, VM3535
HF4R-BN
GE, 9T51B0008
MHS4-63D-Y7BALS-X4
HW0472080-5, 154756-2
Siemens, 6ES5464-8ME11
Allen Bradley 1747-SN
A16B-1211-0860/05A
A1SJ71C24-R4
CJ1W-CLK23
Q02HCPU
DX80G9M6S6N6C
FIS-3000-0003, MS-3000
44A729644-G01
204207B-001
9ZT-31
KRP-C2000
410010-0350, RP232, MEC-10BV-0
GT2-H12
V5055C
M1410C
A1SH42
RS232/RS-422/485
A103GMA100NA1
LB-15K
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SGMP-04AWYR62
Fuji Electric AF-300
38-52-51-5716
500L-COD92
HW8271083-A
090-MO1-3-111-000
F71010KB4G6
594331036-PDC 2261581000
DTCR35830, 68W2010220A
Siemens, 3RB2066-1MF2
HM561U3399412, R01-018421-001
Heidenhain, 311 007 32, LF 103
WFH1000V-G
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BK424
LR-W500C
CN77353
5V86A
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FTH-150-502
GE, CR9500A100A96A
26/2-120, 1 015 717
HC-KFS13D
NA2-12D, NA2-12P
LDZ-5412
W2000
JARCR-ERY01, HE9300731, ERY01-521-104-2
A20B-2900-0651/01A
VS12M-2B-GB5HL2-60L-H
SM30114-A
RCP-SA5-I-M-150-N-BE
505-BOX B0X-92
HL-200-4PB L150
EC-2004-12-DLN
3RV1041-4LA10
D1VW020DNYGH56
HYDG25H-75F-F6NZ
115864.00, A6K8FR1A
PB351-1087, 138314-1, Y37A14016-1
Sargent Mortise Lock 8271
LR-ZB250N
Honeywell, 9309106, XP500PS1HG
Omron, CJ1G-CPU43H
Omron, CPM1A-20CDR-A
Fanuc, A20B-2901-0960
Pilz, PNOZ V3s
Lincoln SRF2S0.75TC61
Honeywell, RM7890 B 1014
Allen Bradley, 45DLA-1LEB1T-F4
Baldor, VM3538-8
Baldor, L3401
Siemens, 14DSE32BA
P82G63-3100
KIT15006RH
CVA2-15HR4BL
Panasonic ZUEP1224
Schunk PGN-80/1
Allen Bradley Z-34042
Fireye, E1R1
SR3616-8290-7-56BC-CU
F713-30-B5-G
19-11-24/S101, U-76132
Arcair, K4000
4120-5004
17710D16
845H-SJDZ13CAY1C
ERB01A
Weidmuller IE-SW16-M
Heidenhain, 376846-5S
Burkert SE35/8035
EI Hagiwara C-7704-1720-10
Gre Con UPU-2000
DEA04.2M
128URT2
SP356038
ENR19245-C
Mitsubishi, NV100-CF
Sick, C20E-030302A11
ST307-350-B
注：聯系我時，請說是在“傲立機床網”上看到的，謝謝！
