64607901 RDCU-02C

64607901 RDCU-02C

64607901 RDCU-02C

64607901 RDCU-02C

2、 数字量信号连接应注意的问题

变频器的输入信号中包括对运行/ 停止、正转/ 反转、点动等运行状态进行操作的数字量输入信号（开关型指令信号），这些信号常来自PLC 的数字量输出信号。PLC 通常利用其内部的继电器接点（继电器输出型P L C ）或具有开关特性的元器件（晶体管输出型PLC）与变频器相连，得到运行状态指令，如图1 和图2 所示。在进行数字量信号的连接时应注意：

（1）使用继电器输出型P L C 与变频器相连时，应注意接触不良常带来变频器误动作，因此在实际接线中要注意连接可靠。

（2）使用晶体管输出型P L C 与变频器相连时，应注意晶体管本身的电压的高低、电流的大小等限制条件在其范围内，保证系统的可靠性。

（3）设计变频器的输入信号电路时，应尽量避免采用继电器等感性负载，因继电器开闭产生的浪涌电流可能引起变频器的误动作。

（4）当P L C 输出的开关信号进入变频器时，有时会发生外部电源和变频器控制电源之间的串扰，应注意对P L C和变频器分开接地，避免两者使用共同的接地线。

Vestas  705100  RESISTOR UNIT, VRCC/600KW   30

BN-342/Ex   1

TSXP572623M数量2面价19161

KEW3121A     1

D1T-H2SS   2

Bi4-M12-AN6X-H1141   60

A3120/022-000    1

MMS3311/022-000   2

PR9268/201-100    10

PR6423/010-000    2

UES815S-24AR    4

FX2N-48MR数量2

FR-E720-1.5K  35台

FR-E720-0.1K  31台

TLC511PSF   1

TSC-V-15   3

E3Z-LS86??72个

E3Z-T86?    20个

E3Z-R86?    144个

c9200-24p-E   9

C9200-24T-E   1

9300-24S-A   4

IE3000( TEDAD )   1

N3K-3064PQ-10GE   3

Fpr-2140-ngfw-k9   1

2MBI800XNE120-50    500个

GYS401D5-HC2-B                                   

GYS201D5-HC2   各1

FGHJ2/16K   2

M1S 6600-11-K-YSCHMERSAL            1

EMDSPT6N    4块

控制板,EMDSPT6N    2

CM400HG-66H   50个

R900019742-M-10     1

6EP4347-7RB00-0AX0  1

A145-30-11  4 

GE 379A9705P053  12个

D2836-S11 GS2 西门子SIEMENS 主板  1

W26361-W1962-Z2-02-36

1715-AENTR 2 个 25110

1756-A10 2 个 7847

1715-IB16D 2 个 17790

1756-L8SP   10423   1

6ED1057-1AA01-0BA0    2

ACS880-04-470A-7+0B051+D150+H356+0H371+0J400+P922   1

HB4A370       1

WILTRON 58A50 SWR Bridge, 2-18 GHz, APC7 test port, 35 dB directivity

2000 4X4 DODGE RAM 1500 PICKUP RACK ENDS TRACK BAR END 

APC EPW9 USPP EPW9

NEW APC SMART-UPS SC 450VA SC450RM1U 1U RACKMOUNT/TOWER

ABB DRIVES PCB ASSY, AUX POWER CARD, SAFT 166 APC, 58096652 AB 891011 (BIN 61)

APC CAT-6 Data Distribution Cable - 50 feet DDCC6-050

APC NetBotz Camera Pod 120, NBPD0121 ~STSI

Agilent 85130A Adapter Set Test Port APC-7 to APC3.5mm Female

APC SMT750 SMART-UPS SYSTEM (750VA USB & SERIAL 120V)

APC Replacement Battery Cartridge #24 -RBC24

APC AP8858NA3 Rack PDU 2G, Metered, ZeroU

APC Smart UPS 1400VA 2U Battery Backup DL1400R2 Power Supply

APC Smart UPS 1500 SUA1500RM2U

APC AP7831 Rack PDU Zero U 15A/120V

APC Smart-UPS 750 VA Tower UPS SMT750

1 NEW ABB S3H225DS0AS8APC 225 AMP SACE S3 CIRCUIT BREAKER NIB

APC AP7998 Power Distribution Unit Switched Rack PDU 16A 208V-Input 0U Zero

APC BP420S Back-UPS Pro

APC RBC24 Replacement Battery #24

APC Master Switch Network Controller

APC SMT750 750VA/500 Watts UPS

APC SMART-UPS SMT750 750VA LCD 120V SMART-UPS 500W RETA

RBC26 Replacement Battery #26 American Power Conversion-APC

APC AP9618 Network Management Card, New Open Box ~STSI

Snap-on Classic 78 Riser 54"

Enlarge

STEERING RACK ENDS DODGE RAM 2500 3500 2004/06 4X4 

SANYO POSITION CONTROLLER APC-1 APC-1 HITACHI SEIKI HORIZONTAL

PANEL APC BUTTON SWITCH STOP GUN COOLANT 2711-80-33 HITACHI SEIKI CNC HORIZONTAL

EO Technics VER:APC2.0 S/N:2010585 Auto Power Controller

APC SMC1000 Smart UPS C 1000VA

APC Back-UPS BR1000G Line-interactive UPS 1000VA/600W

NEW STEERING SYSTEM INNER OUTER TIE RODS CENTER DRAG LINK TRACK BAR BALL JOINTS

INNER OUTER TIE ROD ENDS UPPER LOWER BALL ENDS ADJUSTING SLEEVE F 250 SUPER DUTY

IBM RBC37 APC UPS Battery Pack Unit NEW 23K4867

APC AP7900 MasterSwitch PDU 120V 15A Power Strip

APC Environmental Management System Good Condition

APC SMART-UPS 3000 SmartUPS 

SCA SCHUCKER APC3000-30 USPP APC300030

APC Switched Rack AP7901 PDU - 100V AC to 120V AC; 120V AC, 8x NEMA 5-20R Output

APC Back-UPS BR1500G 1500VA Tower UPS 0.05 Hour Full Load 0.22 Hour Half Load

APC 800 RT 800VA Battery Back Up Power Supply UPS

MERCEDES W220 S600 S55 CL500 CL600 AMG APC PUMP AIR SHOCK MODULE 0034665201 

APC SmartUPS RT Extension Power Cable SURT019

UNINTERRUPTIBLE POWER SOURCE APC SERIES 1400

APC MAA-0852 / Rev A AMFR-1FD23 Enclosure w/ CBA

APC SU620NET USPP SU620NET

APC NetBotz Camera Pod 160, NBPD0160 ~STSI

APC AP7801 Rack PDU Metered 1U, 120V, 20A

APC Back-UPS RS 800 BR800BLK Battery Back Up Power Supply

APC Back- UPS RS 800VA Tower UPS - 800VA Power Conversion

Hewlett Packard ( HP ) / Agilent 85037-60001 APC-3.5 Scalar Open/Short

FREE SHIPPING KIT STEERING SUSPENSION TIE RODS ARM ENDS

1997 DODGE RAM 3500 2WD 4WD STEERING SYSTEM ARMS ENDS 

FORD SERIES F SUPER DUTY KIT SUSPENSION STEERING RACK ENDS BALL JOINT 

APC SUA24XLBP SMART-UPS 24V EXTERNAL BATTERY PACK SUA750XL SUA1000XL NEW BATTERY

WARRANTY, PRO PACKAGING, NEW BATTERIES

SUSPENSION STEERING PARTS RACK ENDS BALL JOINT F250 F350 SUPERT DUTY