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64KBP6431, 3RJ-F312MZA02B-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
注：聯(lián)系我時(shí)，請(qǐng)說是在“傲立機(jī)床網(wǎng)”上看到的，謝謝！
