MHD093B-035-PP0-BN現(xiàn)貨
使用變頻器控制高速電動機時,由于高速電動機的電抗小,會產(chǎn)生較多的高次諧波。而這些高次諧波會使變頻器的輸出電流值增加。因此,選擇用于高速電動機的變頻器時,應(yīng)比普通電動機的變頻器稍大一些。
5、變頻器用于變極電動機時,應(yīng)充分注意選擇變頻器的容量,使其大額定電流在變頻器的額定輸出電流以下。另外,在運行中進行極數(shù)轉(zhuǎn)換時,應(yīng)先停止電動機工作,否則,會造成電動機空轉(zhuǎn),惡劣時會造成變頻器損壞。
6、驅(qū)動防爆電動機時,變頻器沒有防爆構(gòu)造,應(yīng)將變頻器設(shè)置在危險場所之外。
TEP7 常用功能塊說明
1. SFB0 "CTU" SFB1 "CTD" SFB2 "CTUD" SFB4 "TON" SFB5 TOF
兼容IEC61131-3的計數(shù)和計時功能塊
2. SFB41 "CONT_C" SFB42 "CONT_S" SFB43 "PULSEGEN"
用于PID控制
41---連續(xù)
42---離散
43---用于將一個模擬量轉(zhuǎn)化為與之對應(yīng)的周期性開關(guān)量脈沖信號,該脈沖的
占空比與模擬量的數(shù)值大小成正比.
3. SFC0 "SET_CLK" SFC1 "READ_CLK"
用于讀寫PLC中的系統(tǒng)時間
4. SFC14 "DPRD_DAT" SFC15 "DPWR_DAT"
用于讀寫DP從站中的一致性數(shù)據(jù) 如:讀寫用DP通訊的變頻器中的控制字
5. SFC20 "BLKMOV" SFC21 "FILL"
塊拷貝,塊填充
6. SFC46 "STP" SFC47 "WAIT"
SFC46 使PLC進入STOP狀態(tài),挺有用的:可以當軟件陷阱,或利用上位控制PLC停機
7. SFC60 "GD_SND" SFC61 "GD_RCV"
MPI的GD通訊
8.IEC Function Blocks
FC22 "LIMIT" FC25 "MAX" FC27 "MIN"
FC22 ---限幅輸出
FC25,FC27 --- 3個數(shù)比大小
9.PID Control Blocks
FB41/42/43 同 SFB41 "CONT_C" SFB42 "CONT_S" SFB43 "PULSEGEN"
FB58 "TCON_CP" FB59 "TCONT_S" 用于溫度控制PID
10.Ti-S7 Converting Blocks
FC105 "SCALE" FC106 "UNSCALE"
模擬量輸入輸出的比例和數(shù)據(jù)類型轉(zhuǎn)換
11、SFC1 讀取系統(tǒng)時鐘
12、SFC3 啟動/停止運行時間定時器
13、OB1:主程序循環(huán)
14、OB10--OB17:在設(shè)置的日期和時間啟動
15、OB20--OB23:延時后啟動
16、OB30--OB38:以設(shè)定的時間為周期
17、OB40--OB47:檢測到來自外部模塊的中斷請求時啟動
NEW ACCURAY CORP. 072929-002 HEMI-PLUS SENSOR HI-TEMP SOURCE/DETECTO?R
ACCURAY 072929-002 USPP 072929002
AccuRay Systems Thickness Gauge Scanner Radioactive Core Removed
AccuRay Scanner Overhead Track Thickness Gauge System Paper Processing
ACCURAY 082157-002 NSPP 082157002
ACCURAY 082157-002 USPP 082157002
ACCURAY 069829-002 NSPP 069829002
ACCURAY 069829-002 USPP 069829002
ACCURAY BMDC004A-006 LOGIC CONTROL MODULE BMDC004A006
ACCURAY 61595-003 NSFP 61595003
AccuRay 069829-001 FTI PC Board
ACCURAY 069242-002 USPP 069242002
ACCURAY 083883-004 NSFP 083883004
ACCURAY 083886-001 NSPP 083886001
ACCURAY 085221002 NSFP 085221002
ACCURAY 064892-002 USPP 064892002
ACCURAY 061595-003 USPP 061595003
ACCURAY 061589-002 NSPP 061589002
ACCURAY 100614-001 USPP 100614001
ACCURAY 64844-004 USPP 64844004
ACCURAY / HONEYWELL BMDX001A-001 BOARD BMDX001A001
ACCURAY 061552-001 USPP 061552001
ACCURAY 083886-001 USPP 083886001
ACCURAY 064895-001 USPP 064895001
ACCURAY 061580-001 USPP 061580001
ACCURAY 061577-003 USPP 061577003
ACCURAY ABB 64844-004 PC BOARD PRI 64844004 064844-004
ACCURAY 082157-002 HRVI SCANNER CONTROL BOARD CIRCUIT BOARD MODULE CARD 51996
ACCURAY ABB 83883-004 PROCESSOR GENERAL UNIT 83883004
ACCURAY 083883-004 USPP 083883004
ACCURAY 064844-001 USPP 064844001
MHD093B-035-PP0-BN
Ametek/US Gauge Solfrunt Pressure Gauge Fig #1980 0-160# 4-1/2" 1/2" ANPT (NIB)
AMETEK DREXELBROOK SENSOR
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AIRCRAFT DC9/MD80 LOADMETER IND P/N 8AW61LAS1
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AMETEK PANALARM SC-10 USED 8 PIN ALARM RELAY SC10
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Ametek Power Controller - Model SCPF1 Series
# AMETEK. PRESSURE / TEMP GUAGE. C - PT 1X810. 2 - 1/2 " PT
AMETEK-PANALAR?M 90-AX1 24VDC WB-3 SIGNAL APPLIANCE SYSTEM UNIT NEW
Ametek Hunter Spring 2200 Grams Force Gauge
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SAZ-4201ER *NEW* OE Solenoid for Prestolite, Ametek 12V
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MHD093B-035-PP0-BN
Ametek 1X599 0-100 psi 4.5" pressure gauge
WIND GENERATOR TURBINE 400 WATT WITH AMETEK MOTOR
Ametek Vacuum Motor 118148-53 120V 50/60Hz (EC4-2)
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AMETEK GAUGE P500 1/4 ANPT CONNECTION SIZE 2
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AMETEK DIXSON 101P PROGRAMMABLE BAR GRAPH 0-1000 SCFM
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MHD093B-035-PP0-BN