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。1771-OAD-C AJ71UC24
AU6627N2
EAD, BTU 5252006, 5209822
Rexroth, VT-5014, VT5014S31
W200MLCFC, 1A96682E01
Rosemount, 580D-10
1179B00713CR14V
9363-B10-1K-20P1
Dura, HS H7 B, 3-12
Jamesbury VPVL200-SR6-B-C
Burkert, W33ML, 00002428
2213 67.55/1 50-5000803
Banner, PVA225P6Q
Mitsubishi, FR-A220E-0.75K-UL
Lab Master DMA 811962
Allen Bradley, 194R-NU100-1753
Valtorc, TJ26396
Omron, CS1G-CPU42H
SFR-13 FR-20-50-2
0-51831-6
Square D, 8502 PG3 11V02
AJ35TB1-16DT
Opto 22, G4RAX
DC300E-0-000-20-0000-0
Paragon 500-132-00
60-1664-3
836T-T300JX9
ESCV-2 WPPC0038
PX60-020-108
Siemens 3RK1300-1AS01-1AA1
C-7704-1510
Cone Drive MSHV20-X8B
Spot Welder Welding, 948-641
IFM Efector OD5007
Fanuc, A02B-0236-C205
Allen Bradley, 873C-DDNP1000E2
Keyence, FT-50A
Honeywell, R7248A 1004
56T34D5328, 9VB56T34D5328D
Baldor, IDNM3534, 35T995-1709G1
HW9280784
PHD R11A 2 180-A-D
ATV58HU09M2Z
P56X1337
Parker, D1VW008CNTCF
Honeywell, SDS-C2BR-S8
Bently Nevada, 190501, 160501-06-00-01
Parker, D1VW008CNKC
Allen Bradley, 836T-T300J
Horner HESX1182300A1-09
SMC, MGQM50-150-Y7BAL
Allen Bradley 1771-HS1 IMC-121
Fanuc, A16B-2200-0341
Modicon AS-B824-016
DX80G9M6S2P2M2M2
AC Tech Lenze SD230
Modicon AS-B872-200
Square D VSD07U09P10
Micro Switch, 21CX 13 9749
ESK-M001-D-517
JANCD-MFC04-2
RGBF05R12-502-M
A16B-2200-0760
1771OW
GV-H130
MD20A-ZM
Bosch 1070075324-102
Siemens, 505-6660
PPT Vision 661-0114
JD62T200
108 232E
RCP-SA5-I-M-200-N-BE
505-AOXD-105
RDTICXT50, ER20
KD3400Y
700-PSDA1
873C-DDNP1000E2, DDNP1000-E2
Siemens, 6SE3-190-0XX87-8BF0
655-7686-001, OR20 RT MAR5 0600 ALET, 0R20
HGP-25-A-B
HST26A
Allen Bradley, SP-120659, 1336
009-07204-01E0-61
CB-1321
Rees, 04962-100
6010P0, 19990500835
RM48-3R0GB
KG-505W-8
VLP-1000
426T2-15
PCA-6157-BARE, PCA-6157-P54
420871-34340, PC871B, 40-20-34341
AC361RGRI
34A063-0918G3
315-925
X1P C0.0075-0.5V/24/240VACDC
7022AJ
SB11D
SC63-A-41A-90A-R-S3-1.5
PX60-020-108
INBIM02
HF-KP053D
PNOZ8
PTAI216
EP260
CV050
D500DIM3224D
DC230B-EE-2A-10-0000000-00-0
SMC, SMC, EX250-SEN1
Barksdale, 425T2-17
Danfoss, 017A1692-01
855TV-B10F3F7F6K1
Red Lion, IMD23107
HD3-3W-BGA-03B-WYR3
Pilz, PZE5V-0.5-3S-24VDC-4S-1O
Bentley Nevada, 37506-A-05
Mitsubishi, MR-J3-10B
IFM, OO5002, 005002
Schmalz, SCP 30 FS VD, 10.02.02.00911
Fronius, 42 0410 0854, 4 045 881
CN77R344
852S-NSB
W8B11-00V-04
Sick, 149338, 149338-3
8536SD01V08
836T-T252JX40
3WE-10-B31 CG24N9DAL
CC3-HB110E
54-14407-201
1785-L20B
849-ZOD32
855EC-B24Y7Y6Y5Y4Y3, 719004-1
S05B1P2PANS000
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
SGR2-584Q8
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
SMC ISA15-4R-01BG
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
U210, 581-32, 011/902223/2/14, 611-15-400
STI SMC-2
GE, CR9500A100A135A
FR-S510WE-0.4K-NA
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