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)際檢測值進(jìn)行PID運(yùn)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(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與變頻器的高速信號同時(shí)被PLC檢測到，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有效，這時(shí)壓力上限信號如仍出現(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Parker blx75/blx75l a20b-3300-0240/05a
a16b-2200-0800/10b
chi2-40 A-W-G-bqbe, Mod # C 4hz20024 p10214
BN 6756.4543
BN 6756.4544
1000243
MSMA 302D7V3
A61L-0001-0078, TX-1208AA
115 MSA 200
P105T100-15ST-B1S1-XX-S-00
XSZ 10 V/xsz10, 2492951
YZ215B-2, KS-YZ14B, BN624A527G52
A80L-0001-0272-03
5/bww6-tk5
gpdm - 12254
920-01-014, RD61
cp*gt6-l5-pb-13348
871-21781-02, 1-20636
Lasermike Assy 1000-00011 Platine, Leiterplatte 1000-00008
A16B-1100-0450/01A
XSZ 10 V/xsz10, 2492951
3-424-2081a, mit 3 531 4608a
1-230-0647, 6rb 2101-3a-z
AB3611A
ec2 163-238110 163-265214
a68rd3, pt100
ct8132420c
e4809-045-062c
AB3621C
a16b-2202-0682/01a
b521121-1
a16b-2202-0761/03b, a06b-6079-h104
MQM022T4V, 410622-0900
109-0645-2a04-01
FGSE 600-21
c6t34nk14a, 3450
MS4436B
MS4436B-2
A16B-2201-0580/03C
Allen Bradley 8600 BP7B 9327738Y-RD
BN624A527G51
Siemens PC Board, 6sn1118-0dj21-0aa0
ct8132380g
NPK-10/40, RP-8407E
A16B-2200-0855/03B
xs-pc1040r, ba220, cod.641411 y/00
xs-p1040r, ba220, cod.841411 y/00, 968650
415-0176-016J, 415-0176-903A
acp-180f
66-02-02, NTR 1200W/NTR
S 112470
e4809-770-120-a
Pioneer Pumpe, V 12 SC 75 C
MC4200, MC4240XE 42732-0400
akte 40b
415-0601-902
Siemens Board, # 6FX1182-6BX00-3R
DU4F 3E 193-230092, 193-250092-B-02
Typ din3380220bm
a2/3000, a06b-0373-b077
Gate 80-002e
415-0176-139
415-0176-124
ct8132240f
NQJ-180
Matsuura PC Board, # 0052-A-35
A-124690, RMA#8723 2/01
Kawasaki Verst?rker Modul, PAUB 2-07
felq - 7
xps-454r, rdk-ic05020
CPA2 193-230190-001
a20b-3300-0362/01a
a03b-0807-c104, aid16d
55923, mit 55958
6fx1128-4ba00
A20B-2902-0230/03A
AS-D908-120
a02b-0059-c036, a61l-0001-0076
FANUC A20B-1006-0110/03A A06B-6076-H101
MMC9314-M2-24, MMC93H
CPCR-mr.085k/CPCR-mr.085k2
St 90s c2/st90sc2, tg40-80/15 330
a06b-0202-b805, 1/5000i
Yaskawa Servopack, DR1-08AA
a290-1012-t500
Siemens Platine Modul, 4620089200, 4620089200.02
Siemens Platine Modul, 4620087261, 4620087261.01
NIB Tsubaki 0.2 KW Getriebemotor, gmta 020-18U5V4H
a16b-2201-0120/11a
64KBP6431, 3RJ-F312MZ
A02B-0118-B002, W/A16B-2200-0490/07D, A16B-2300-0022/03B
USAFED - 05fb1s
Modell # 27s12dma01
A04B-0229-C403
Bosch Servo Drive SM 5/10, 050829 103
YZ214A-2, KS-YZ14B, BN624A527G52
BDS4-206J-204B3
M32EBL2WD
m16-ii, 00-10-05-03
mn-210a j1/0
lx131c, Rev B, bn624e233b
852479 CCU Co. F, 813186e
mn-250a/mn-250a j3/0
4-1525-171-3-186
500-5049
Gleason Platine, 26024214
as-516p-008
DG-4240
05aey291
MK4G44418D
Siemens Netzteil, 6FC5114-0AB01-0AA0
Acroloc Universal I/O PC Board Assy # 330-224
4-PSU-155
yz214a-2, ks-yz14b, 3-hd52a
Typ # bl-120e-20
010-18U10V4
balluff bod 21m-la02-s92
FBX1, Rev. 137
NSD Steuerplatine, Mod # vs-10b
e4809-045-045-d
ae1/3000, a06b-0101-b178
nq-180j
58 43 920, 19.5: 1
175q56h60/60:1 Verh?ltnis & 133q56l5a/5:1
M-14124
A80L-0001-0272
V/xsz10, 2492951
k1a-1-no2-f2, yn7000890f
a20b-1003-0864/01a
la-5600/la5600, Art.-Nr. 9080-0566
5F/3000 # A06B-0346-B256
HURCO Dual Axis Board 415-0176-001A/415-0176-009A
Landis Mom Enhanced PC Board, # A130488
Giddings & Lewis 502-02778-50
Typ # bd02035aaa
as-s202-020
e4809-770-032-1
414-0177-002e
allen bradley 810-a22c
414-0176-904/415-0176-604
852 437, 813 189f
415-0176-904
b48333-801/b48333-801c
088l3278
AM850-20D-T
a16b-2202-0540/10c
A16B-2202-0540/11C
ct8121440d
A20B-0009-0140/04C
Arst - 5xb-11
6VAF343007B-A2
A05B-2452-C471, ab RJ3iB
a06b-6098-h001
dr1-08aa
a12/3000, # a06b-0143-b077
44a723622-001 r04/5 mit 44a726819-001
Mazak PC Board, 05-Folge i/o-1, d70jv005840
P/N 340528, g34924-k1025-h2-c1
Mod # 1-0sp, a06b-0373-b169
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