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11.28.04.se-bCPG3C 193-230496-001 193-250496-A-01
Bridgeport XTC Control Circuit Board, 1930760
bn624a471g54, se-cpu2
142-1bd21-0xb0
im-pw2, ip-154
FANUC CPU Board, A16B-2203-0431/05B
Omron f300-a20s
g34901-b1020-h2-d1
905591-01
1ft5044-0ak01-1-z
mit scx-16w
5000 e4809-045-035-c, e0227-702-005, e4809-045-0
HBT15-06CPT4AV-B
Siemens 6av7704-2bb10-0ac0
Indramat/Rexroth lt354 Modul, Typ: 0 608 750 113
fanuc pc board, a16b-2201-0630/09b
Siemens 6av7704-2bb10-0ac0
xc40e-1203a0a0cba0
A02B-0083-C101, A61L-0001-0086
Siemens 6av7704-2bb10-0ac0
1.2-30-300-w1
193-250190-B-02
65ba030vdt10
a06b-6083-h218
A20B-2100-0160/04C
A20B-2100-0160/05C
a20b-2100-0160/03c
Matsuura PC Board, # 0052-A-10
rx312b, c1n634a589g53
a06b-6050-h301, a20b-1001-0420, a20b-1001-0410
6fm2805-4as31
1336S-BRF75-AA-EN-HA1-L6E
Trans 01.7/1/op 04
A80L-0001-0317-02
A06B-0522-B042, A860-0308-T112
Yaskawa JANCD-mb22-1 df9100117-bo
A16B-2202-0728/04B
a16b-1000-0190/09a
Gebraucht
Hawa ww-1400
a20b-3300-0031
JUSP-rcp01aad
1784-T50B
CN-1000T-10, TS1510N122
813.215.0-d
RTO 859114
is-160-2pc-2ah0-hl-17
a1/3000, a06b-0371-b084
is-190-2pc-3al0-hl
CLA-53A
SMC MYH40G-A2402-600
ugjmed - 80M A2SF
Siemens 6fc5 114-0aa01-0aa0
a16b-3200-0425/08e
bn624e653g52, fx773b/fx773
a16b-2300-0100/02a
a06b-6061-c201
415-0605-903
a16b-3200-0425/09e
by171a379g51
hd41-12s
oc-2010
SMC cdnafn 100-350-D
KIM5591.0202
UF01C-2, FW30A, Meldas-W7C, BN624E943G51
Mod # m4500
FMS748A5-20
86/2p/8a/3,7nm/sd
115msa040200ag
qx611-1/qx611b-1, bn634a712g52
455084-002
HVL10
Bruder Fuji Keypad AB12C-2064/_ E4, 638706011
FANUC Transformer A80L-0001-0088-07
Ruthman Pumpe, RL-L, 1/4
a02b-0059-c036, a61l-0001-0076
dds2.1-w050-d
Charmilles 1994 Roboform c400 PC Board, 852 501
6sn1111-0aa01-2ba0
a06b-6035-c112
a16b-3200-0421/08e
FT3078-5AZ21-9-Z-N
ft4-14-450 & fr4-14-450
10E3X4000BM00
pfp-298, NLGI-kl2
uf50e3va0001bh00
2804-SLS1 SLS2
rmh02-30ly
TP-8159-2
FEC AFC1500
9310-V0000
E6F-AB5B-01
8055 SCP452
ksc-1
sr700
Omron f300-c10v2
a02b-0050-c031
Okuma PC Board # e4809-045-202-a
A20B-8100-0710
mlp-1000
9800-AC-AB-1-1
OSAI OSS 200 Drive Modul, OSS 200-30
a20b-3300-0150/05b
193-230189, 193-250189-C-03
FANUC PC BOARD, a16b-2202-0542
Giddings & Lewis 502-03552-02r3
FANUC PC BOARD A16B-0160-0541-29G
ksp-m17-a16, c8451-a45-a20-9
403d1a
rmh1/4-30l, 60:1
OC-200
SH20007TB36DS4
SGDH - 15aey291
Steuer 19", 1000243
3B 48T34T10J, 3 PH, FM68H-Q
Mod # 115MSA040200AG
A20B-0006-0871/03A
A13B-0129-C045
HVP-FC1-F32R-A
oc-2015
jefmc-c031 09-c
mfe5/bw15
Allen Bradley 8000lb/8000-lb
IEF Werner PA-Steuerger?t, Steuer 19", 1000054
Corcom 110fcd10b EMI Filter Modul f7763, 110a
60 2pc-2ah0-ll
047818-306
A06B-0512-B141
05aey291 mit JUSP-ns115
Bendix Industrie Netzteil, 3735156
dft80k4, s57dt80k4
xc40e-0903a0a0cba0
A04B-0217-C201
JZNC-mtu18
a02b-0299-c041/t, a61l-0001-0093
cps-100s-2
4620087701.01
FANUC A02B-0303-C328
2ek15689-6, md704b-5-17
e0451-521-038
nq-180jl, 180w
vmr-10-cmc-20-s121-j
SEL-G-4-AC-200C
2492953
VWG11LF3
MS4600, MS46SR-20-260-Q1-R-NC-FP
Unit, # 8000-Saat
mts-r01.2-m2-b1-fw
5250-mlp1
5rk40gn-ce
1-O/3000, Typ A06B-0524-B251
TLC-1004L-5FG2G-99
6SC 6110-6AA00
8513750, pc 852 6080
812.108C, 852467
3hab8101-3/12b
MC211A BN624A870G51A, MDT962B-1A
A16B-1010-0330/11A
ksp-m17-a16, c8451-a45-a20-9
a06b-6124-h105
a06b-6114-h105
a06b-6059-k036
a16b-1010-0050/15c
193-230544, vapaec, Kyosan kcq200-ne41
3hab8101-8/08c
ct8121440d
A06B-0313-B572 #7008
a06b-6058-h004
A16B-1000-0180/02B
8020 SCP-523
IS-170-2PC-2AL0-HL
a16b-1110-0341/07b
a06b-6124-h202
1-O/3000, Typ A06B-0524-B251
832lc.080.v
Mod # z723
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
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