3HAC025887-001
3HAC025887-001
3HAC025887-001
3HAC025887-001
變頻器提供三種不同的工作方式供用戶選擇：
方式0：基本工作方式。變頻器始終固定驅動一臺泵并實時根據(jù)其輸出頻率：控制其他輔助泵啟停。即當變頻器的輸出頻率達到最大頻率時啟動一臺輔助泵工頻運行、當變頻器的輸出頻率達到最小頻率時則停止最后啟動的輔助泵。由此控制增減工頻運行泵的臺數(shù)。
方式1：交替方式，變頻器通常固定驅動某臺泵，并實時根據(jù)其輸出頻率，使輔助泵工頻運行，此方式與方式0不同之處在于若前一次泵啟動的順序是泵1→泵2，當變頻器輸出停止時，下一次啟動順序變?yōu)楸?→泵1。
方式2：直接方式。當啟信號輸入時變頻器啟動第一臺泵當該泵達到最高頻率時，變頻器將該泵切換到工頻運行，變頻器啟動下一臺泵變頻運行，相反當泵停止條件成立時，先停止最先啟動的泵。
3.2 PID的調節(jié)功能
由壓力傳感器反饋的水壓信號(4-20MA或-5V)直接送入PLC的A/D口(可以通過手持編程器)，設定給定壓力值，PID參數(shù)值，并通過PLC計算何以需切換泵的操作完成系統(tǒng)控制，系統(tǒng)參數(shù)在實際運行中調整，使系統(tǒng)控制響應趨于完整。
3.3“休眠”功能
系統(tǒng)運行時經(jīng)常會遇到用戶用水量較小或不用水(如夜晚)情況，為了節(jié)能，該系統(tǒng)專用設置了可以使水泵暫停工作的“休眠”功能，當變頻器頻率輸出低于其下限時，變頻器停止工作，2＃、3＃泵不工作，水泵停止(處于休眠狀態(tài))。當水壓繼續(xù)升高時將停止1泵，當水壓下降到一定值時將先啟動變頻器運轉2＃泵或3＃泵，當頻率到達一定值后將啟動1＃泵調節(jié)2＃或3＃泵的轉速。
“休眠值”變頻器輸出的下限頻率PR507設置。
“休眠確認時間”用參數(shù)PR506設置，當變頻器的輸出頻率低于休眠值的時間如小于休眠時間td時，即td＜tn時變頻器繼續(xù)工作，當td＞tn時變頻器將進入休眠狀態(tài)。 “喚醒值”由供水壓力下限啟動，當供水壓力低于下限值時由PLC發(fā)出指令喚醒變頻器工作。
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USAF C-130 HERCULES Fireye Fire Detector 1955 Print 廈門光沃熱賣.低價銷售
FIREYE ED600 CABLE ADAPTER BOARD廈門光沃熱賣.低價銷售
FIREYE 60-2060-4 MODERNIZATION ADAPTER, PDR 4廈門光沃熱賣.低價銷售
Fireye 38-58 Flame Signal Meter Used廈門光沃熱賣.低價銷售
FIREYE POWER SUPPLY MBLPS-100D 120V USED (S5C)廈門光沃熱賣.低價銷售
FIREYE Solid State Burner Management Ser D 70D10廈門光沃熱賣.低價銷售
FIREYE ED550-6 REMOTE CABLE廈門光沃熱賣.低價銷售
Fireye MT60-10 Timing Card 60s Purge 10 Max MT6010廈門光沃熱賣.低價銷售
FIREYE MERT1 FFRT .8 Flame Amplifier Module 廈門光沃熱賣.低價銷售
Fireye 4-263 Firetron Cell 廈門光沃熱賣.低價銷售
FIREYE E500-3 COMMUNICATION INTERFACE FOUR UNIT INPUT廈門光沃熱賣.低價銷售
FIREYE BURNERLOGIX BLPS-300 PRESSURE SENSOR 0-300 PSIG廈門光沃熱賣.低價銷售
1 NIB FIREYE MEP561 PRORAMMER MODULE廈門光沃熱賣.低價銷售
FIREYE FLAMEWORX II MBUVS-301D UV SELFCHECK MODULE (S5C廈門光沃熱賣.低價銷售
Fireye 1 Micro Headphone Amplifier廈門光沃熱賣.低價銷售
Fireye 72D1R1 Autocheck - Infraered 廈門光沃熱賣.低價銷售
Fireye 70D40 120V Burner Management Control Series 廈門光沃熱賣.低價銷售
FIREYE 72DUV1 D-SERIES AMPLIFIER FLAME ULTRAVIOLET AMP.廈門光沃熱賣.低價銷售
FIREYE 26CF6 (5022 A) FLAME DETECTOR RELAY BURNER 廈門光沃熱賣.低價銷售
Fireye High Voltage Power Supply Din Rail MBHPS100D廈門光沃熱賣.低價銷售
FIREYE FLAME SAFEGAURD CHASSIS 70D20 NEW 120V廈門光沃熱賣.低價銷售
Fireye 38-55 Flame Signal 3855 HORIZONTAL METER 廈門光沃熱賣.低價銷售
FIREYE ED500 DISPLAY MODULE廈門光沃熱賣.低價銷售
Fireye Program Module Type 71D90.廈門光沃熱賣.低價銷售
FIREYE MED5 MicroM DAUGHTER BOARD W/DISPLAY OUTPUT/COMM廈門光沃熱賣.低價銷售
Fireye PS348-6, PS-348-6 Pressure Sensor廈門光沃熱賣.低價銷售
FIREYE 60-1508-2 OFF DELAY TIMING MODULE BOARD CARD廈門光沃熱賣.低價銷售
Fireye MT20-10 Prepurge Timer廈門光沃熱賣.低價銷售
FIREYE MED3 MicroM DAUGHTER BOARD W/REMOTE 廈門光沃熱賣.低價銷售
Fireye D-Series Amplifier UV Self Check 72DUVS1廈門光沃熱賣.低價銷售
1960's Fireye Sales Data Spec Sheet Combustion Controls廈門光沃熱賣.低價銷售
FIREYE 71D80 D-SERIES PROGRAMMER USE W/70D30廈門光沃熱賣.低價銷售
FIREYE 71D90 D-SERIES PROGRAMMER USE W/70D30廈門光沃熱賣.低價銷售
FIREYE MEC120R CHASSIS WITH REMOTE RESET廈門光沃熱賣.低價銷售
FIREYE ED510, ED -510 MODULE FOR USE EP PROGRAMMERS廈門光沃熱賣.低價銷售
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