恒壓供水系統(tǒng) 全自動(dòng)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(hào)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(shí)際檢測(cè)值進(jìn)行PID運(yùn)算，并給出信號(hào)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(shí)，一臺(tái)泵在變頻器的控制下穩(wěn)定運(yùn)行；當(dāng)用水量大到變頻器全速運(yùn)行也不能保證管網(wǎng)的壓力穩(wěn)定時(shí)，控制器的壓力下限信號(hào)與變頻器的高速信號(hào)同時(shí)被PLC檢測(cè)到，PLC自動(dòng)將原工作在變頻狀態(tài)下的泵，投入到工頻運(yùn)行，以保持壓力的連續(xù)性，同時(shí)將一臺(tái)備用的泵用變頻器起動(dòng)后投入運(yùn)行，以加大管網(wǎng)的供水量，保證壓力穩(wěn)定。若兩臺(tái)泵運(yùn)轉(zhuǎn)仍，則依次將變頻工作狀態(tài)下的泵投入到工頻運(yùn)行，而將另一臺(tái)備用泵投入變頻運(yùn)行。當(dāng)用水量減少時(shí)，首先表現(xiàn)為變頻器已工作在最低速信號(hào)有效，這時(shí)壓力上限信號(hào)如仍出現(xiàn)，PLC首先將工頻運(yùn)行的泵停掉，以減少供水量。當(dāng)上述兩個(gè)信號(hào)仍存在時(shí)，PLC再停掉一臺(tái)工頻運(yùn)行的電機(jī)，直到最后一臺(tái)泵用主頻器恒壓供水[4]。另外，控制系統(tǒng)設(shè)兩臺(tái)泵為一組，每臺(tái)泵的電機(jī)累計(jì)運(yùn)行時(shí)間可顯示，24小時(shí)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(yùn)行時(shí)間，確保了泵的可靠壽命。Townsend Riveter 42561 BA17DMHMTPA
A17 3408617861
QJ71DN91
GV-H450
SO135-03205568
57405-D
GPC-D2
6N2P35001
SIG Berger Lahr, VRDM 597/50
940-A4V-AD-001
C-8335-4810-10 YN70008M8H
NRG050S1ZC1
Siemens, 6GK1502-3CB10
LCS-2TA
MSB01-15-100
YEW005010
MVH-5/3G-1/8-B-VI-X
JANCD-MEW02-1, DF9201012-C0
0064465-001
PNOZ8
803624-51E 110196
TP-5107-3
AB3602-B
IC693CPU331L
QD62
1784-PKTXD
XVME-230, 70230-001
A20B-0008-0242, A20B-0008-0242/0204A
MCS-500-01, 7150-101-004
BES-516-B02-KHG-12-602-SP02
Cash Acme 20303-0040
PC-A984-145
700-NM200A1
PDT-S2010S00, PDT-S2010S
MG-08-0F-20
SP-120659, 1336
V5055C 1026
160-AA03NPS1
140M-H8P-C30
6KG1123F50X1B1 AF-300G11
Parker AMP, 5034-233
JAPMC-I02308
KT5L-P3611S01, 1015155
Megger, 212359
IF5155-131
XTCR040D11TD
HDU221
ATI, PV1-M, QC151M
Lion Precision, LRD 2100
LG5B65PU
R7D-BP01L
A20B-2900-0480, A20B-2900-0480/02A
253-420, VAP040-A
PY2A030E0XXYPH2
A16B-2200-025
Fanuc, A16B-1211-0042, A16B-1211-0042/02A
Allen Bradley 1784-PCIDS
GE Fanuc A16B-2200-045
Parker, L6553910249
Graco, 208997
Flex Link, XTPD D35
A20B-2902-0372
FCS-N1/2AP-ARX-B1151/D031
XC1 AC117 AC117H2
Q61P-A2
A20B-2902-0373
M001
QD75M2
Dwyer W.E. Anderson, SF11
AN2P35012
SG926-LN5403.5
MR-E-40AG-QW003
MP-2500-00-000
KBLD180-C
A16B-1600-0440
MG10-P1
2755-LD8A1
TZ1LE024BHA-C1902
TA 2-81240
LK7023
662289261499 1180259
16732 RM831000
RA15A18004
Square D VSD07 U09 P10
Fanuc A16B-2202-0401
Allen Bradley 700-RTC31S300U1
Riken Keiki GP-621D
Omron, E5AX-LAF-X
Parker, P5G-AP6BCNRAS-A
Unipulse, F362V
Emerson, 02-766390-01
Yaskawa, SGMAH-A5A1A-YR21
AS-B827-032
JANCD-MM14D
TZ1RE024BHA-C1903
Thomson Industries, 7828132
NTAI06
AL230A-7A2
QS1E03AA-01
ETR1
FD3070L
MML400-E25535, 4B3NA2A-1436
DC200C-0-00B-100000-0
RB18025UUCC0-G1G
P2HZ5-24VAC-2S-2O
3RW3026-1BB04
C11500
836T-T352JX6
SR33-017AM
HW0171224-A, 152339-1
ENF602-3PB611
SPG1 209039 FJ 60a
DC300K-A-2A3-21-0000-0
FC-D980C
Allen Bradley, 154-A11NB
Siemens, 6EP1-437-2BA00
870BRDPCB4GF4
MXQ16L-50C-M9BL
5881-400, 5881-0
HF-KP13B
XC50SGT-16-5N-NP-S680
Unico, 312-203.1
81-MT
1746-NI4
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
注：聯(lián)系我時(shí)，請(qǐng)說(shuō)是在“傲立機(jī)床網(wǎng)”上看到的，謝謝！
