无负压供水,是常见的市二次供水形式。设备自市政官网直接取水,避免恒压供水由于水箱可能产生的二次污染。现在新建小区常见为高层,市政压力不能满足日常需要,小区供水采取低压,中压,高压同楼层采用不通压力供水。
二、工作原理
水源来自市政供水,设备进口出设有压力变送器,PLC读取市政压力,进水压力保护,进水压力不足时保护设备。设定供水压力值,PLC通过PID运算的出变频器运行频率,通过模拟量传送给变频器。
三、方案
该控制系统主要采用维控PLC和HMI,分别为LX3V-0806MR、和两台LEVI-102EL组成。
简要方案如下:系统由一台PLC和2台触摸屏组成,屏和PLC通讯采用PLC做主站,2台屏分别做从站。
系统有两台水泵,非联动状态时,一用一备。联动状态,一台泵PID运行;另一台泵工频运行,压力高时停止,压力低时启动。包含系统休眠,水泵轮换。
GE FANUC A06B-6047-H004
TOTAL CONTROL QUICKPANEL QPI-21100-C2P QPI21100C2P
INDRAMAT DKS01.1-W030B-D DKS DKS1.1 DKS 1.1 REMAN
ALLEN BRADLEY 1391B-AA45 1391 AB REMAN SERVO DRIVE
FANUC A20B-1000-0690 DRIVER BOARD NEW IN BOX NIB
FANUC A20B-0009-0530 DRIVER BOARD NEW IN BOX NIB
YASKAWA SERVOPACK CACR-SR20SZ1SSY219 MOTOMAN DRIVE CACR
GE FANUC A02B-0200-C061 A02B-0200-C062 NL6448AC30-10
INDRAMAT HDS AC SERVO DRIVE HDS02.2-W040N REMAN
INDRAMAT HDS AC SERVO DRIVE HDS03.2-W075N NEW with box
YASKAWA SERVOPACK CACR-SR15SZ1SSY228 MOTOMAN DRIVE CACR
ALLEN BRADLEY 8520-VOP1 V0P1 MONITOR REMAN
ALLEN BRADLEY 1389-PAT10 POWER SUPPLY REMAN
ALLEN BRADLEY 8520-AA12 CNC 8520AA12 REMAN
INDRAMAT HDS AC SERVO DRIVE HDS03.2-W100N-HS32-01-FW
RELIANCE ELECTRIC SP500 DRIVE 1SU41003 460v 3HP VFD
GE FANUC A06B-6124-H103 HV SERVO DRIVE REMAN
INDRAMAT AC SERVO DRIVE DDS02.1-W050-D 2.1 DDS2.1 NEW
GE FANUC A06B-6058-H222 SERVO DRIVE AMP AO6B
ALLEN BRADLEY 1388-AV60-A06 DC SERVO DRIVE REMAN
INDRAMAT POWER SUPPLY BGR NTB 02-00 NTB02-00 MT-200
ALLEN BRADLEY 1336F-B015-AA-EN-GM2 10HP 230V 1336
ALLEN BRADLEY 1388-AV60 DC SERVO DRIVE REMAN
ALLEN BRADLEY 1392 MAIN CONTROL BOARD KIT# 117755 REMAN
ALLEN BRADLEY 1391B-AA22 1391 AB REMAN SERVO DRIVE
SOLA SDN 20-24-480 SDN20-24-480 24Vdc 20A REMAN
INDRAMAT AC SERVO DRIVE DDS02.1-W100-D 2.1 DDS2.1 REMAN
YASKAWA SERVOPACK CACR-SR03BE13Y44 SR03BE1 SR03BE
YASKAWA SERVOPACK CACR-SR10BE13Y44 SR10BE1 SR10BE
TOTAL CONTROL QPI-ABR-201 ALLEN BRADLEY DATA HWY NIB
LEXIUM SERVO MOTOR BMH0703T16F1A ORIGINAL FACTORY BOX
GE FANUC A06B-6058-H004 SERVO DRIVE AMP AO6B NEW
GE FANUC A06B-0128-B588#7075 SERVO MOTOR NEW NIB
GE FANUC A06B-0128-B588#7075 NEW IN BOX SERVO MOTOR
ALLEN BRADLEY 20AD5P0A0AYNANC0 3HP 480V POWERFLEX 70
YASKAWA SERVOPACK SGDB-10ADG 10 10A 10AD 230v SERVO NEW
GE FANUC A06B-6089-H105 SERVO DRIVE SVU1-80 ALPHA REMAN
ALLEN BRADLEY 8520-AA21 CNC 8520AA21 REMAN
FANUC A06B-6102-H211#520 A06B-6078-H211 REMAN SPINDLE
LEXIUM MODBUS PLUS MODULE AM0MBP001V000 LXM 17D
GE FANUC A06B-6079-H106 SERVO DRIVE REMAN
ALLEN BRADLEY 1336F-B010-AA-EN-GM2 10HP 230V 1336
YASKAWA CIMR-P7U4015 480V 25HP 0-400Hz NEW
ALLEN BRADLEY 20AD8P0A0AYNNNNN 5HP 480V POWERFLEX 70
GE FANUC A06B-6102-H222 #H520 NEW IN BOX NIB
GE FANUC A06B-6114-H205 SERVO DRIVE REMAN
ALLEN BRADLEY 1391B-ESAA45-AQB 1391A 1391 REMAN DRIVE
INDRAMAT HDS AC SERVO DRIVE HDS03.2-W075N-HS12-01-FW
ALLEN BRADLEY 1394-AM50 A SERVO DRIVE NEW NIB 1394 10KW
GE FANUC A06B-6102-H226 #H520 NEW IN BOX NIB
LEXIUM MODBUS PLUS MODULE AM0MBP001V000 LXM 17D NIB NEW
TOTAL CONTROL QPJ-MBP-201 MODBUS PLUS MODULE
GE FANUC A06B-6096-H106 SERVO DRIVE REMAN
SIEMENS CRITERION 500 SYSTEM 3512KPT 3512-KPT XYCOM
INDRAMAT HDD AC SERVO DRIVE HDD02.2-W040N-HD12-01-FW
ALLEN BRADLEY 1391B-ESAA15-AQB 1391A 1391 REMAN DRIVE
SCHNEIDER MODICON MHDA1017N00 LEXIUM 17D DRIVE NEW
ALLEN BRADLEY 1391-DES22-DI 1391 AB REMAN SERVO DRIVE
INDRAMAT HDS AC SERVO DRIVE HDS04.2-W200N-HS45-01-FW
ALLEN BRADLEY 1606-XL480EP 1606-XL 24V DC 20A REMAN
GE FANUC A06B-6114-H105 SERVO DRIVE REMAN