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CPCR-mr.085k/CPCR-mr.085k2St 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
Balluff btl12a0 , btl7-e570-m1220-z-s
1908008
A06B-0371-B569, Encoder # A860-0346-T041
Rexroth Bosch PC Board, 1070077001-701
PM 550-210
1775-MS4
A111-03YYY-HY4-MM
a111-33137-h04
5kn-et4-3-9.52-0, ts5017 n64
415-0176-008j
MSDA 403d1a
MQM012T2V, 410622-1310
General Electric 531 x 111
Makino PC Board, F930 78 72 (2) A, A55E/A88-PCB-A
a06b-0314-b504 #7008
3hab8101-8/08y
90-4K
prd-0017000l-30, prd-0016600d-30, prd-0016400l-10
prd-00017000l-45, prd-0016700d-00, prd-0016400l-10
g3fj-32-60-075d
# z5000
P.MOS-001E
a86l-0027-0001 #102
22-13-88-00/03/12-08-28-00/03/12-08-36-00/06
a16b-2202-0741/04a
100SHN-4T-R-X1A-D10
193-230587-001, vaeabd, 193-250587-a-01
H064857
A20B-0002-0943/19E
a20b-3300-0020/06a
50-1050-E
6sn1123-1aa00-0ca1
VLT-40MII/VLT-40M2
vlt-40mii
HU 661
Trudex ED-15994 LT25
Mod bis1/6000 # a06b-0116-b204, 6000 RPM, MFG 2007-09
mn-290a j1/0
CT208132841C, 20851 7281D
A135773
fis-0810-0019
a20b-2001-0150/01b
CT8132570
Charmilles 1994 Roboform c400 PC Board, 852 432/813188e
FANUC PC BOARD, a20b-1006-048
852 432/813188e
Shibaura VMC Platine # h064856
Daifuku Platine # b4-mem-g1
CMC randtronics Servo Board, # 540D15014
Sodick FS-A5C ATM-002C-1
PLCB 02-02-FW, SLM 2-02/01
PLCB 02-02
c41s-0701aa300
bis1/6000 # a06b-0116-b204
FANUC mf-m5 CRT UNIT, # a02b-0094-c071
NSD VS-5B Controller Unit, VS-5B
NSD Controller VS-5B Einheit, Typ # VS-5B
P421-431
a06b-0313-b231
3HAB-2136-1/4
RT301-116
djl36400e53
Fuji PC Platine, fcs4 CPU, es-v5055
Gleason Platine # 25970011
570 281.9001.03
a20b-3300-0394/01a
B-204-B-11
fanuc master platine, a20b-0010-0100/02b
44A719337-104, EPM01, 44A723603-001 R00/0
8000-mdbz, 90565403
a16b-8200-0011/06a
ID15J1F33-ER
a06b-0346-b357
a20b-3300-0362/02a
fetb - 01-g, by171a360g51
FGSS 1350-21
A05B-2302-C020
a06b-0632-b001
03.25 sb2a
rmh1/8-20l, 20:1
A16B-2203-0740/05A
4mb535a mit bn634a691g51
01-6065YB-29
584/0075/0/8/0/0/0/000
a20b-1001-0700/01a
A16B-1212-0870/06A
3-424-2082A
bb-15a, bn520e879h01a
93938751
AU-12-50
Allen Bradley PC Board, 8000-MDC
FANUC Netzteil # A14B-0051-B001/03
hd-30-029, mit Sanyo g1811-108-6
Bridgeport Platine # 1936004
JANCD-mm01b, df8000019
a02b-0063-c001, a61l-0001-0076, tr-9dk1
Omron f300-l100v2
rth-1m-sp
sgdc - 050505ara
AB3601
126-100-430
047423, 047833
JANCD-sp01, df8100269
a06b-0531-b001
sdf1525-12-124
2-26861-aa/g24k4m
TVM 2.1-50w1-115v
Trudex KT0-0937-00
ha40-kn Arst - 5xb-11
MQM042T2U, 410622-0890
TS4144N11E36
l15-000-mpd0, b15-096-a3l0
SGDV-r90ae1a002000
853 9600
813188e 852 432
C80030/C80030/1.0
D70UB004200, FJV-20
a06b-0522-b543 #0008
a16b-2202-0985/01a
9a, # e7191-292-325-1
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