1756-CNB/ABPLC模块

 1756-CNB/ABPLC模块

旁路保护方法。这种方案利用瞬态抑制元件（如TVS、MOV、气体放电管等）将危害性的瞬态能量旁路到大地，优点是成本较低，缺点是保护能力有限，只能保护一定能量以内的瞬态干扰，持续时间不能很长，而且需要有一条良好的连接大地的通道，实现起来比较困难。实际应用中是将上述两种方案结合起来灵活加以运用，如图14。在这种方法中，隔离接口对大幅度瞬态干扰进行隔离，旁路元件则保护隔离接口不被过高的瞬态电压击穿。

 1756-CNB/ABPLC模块

1756   
MFR. PART NUMBER DESCRIPTION
 1756-A10 10 SLOT CONTROLLOGIX CHASSIS
 1756-A13 13 SLOT CONTROLLOGIC CHASSIS
 1756-A17 CHASSIS 17 SLOT CONTROLLOGIX
 1756-A4 4 SLOT CONTROLLOGIX CHASIS
 1756-A7 7 SLOT CONTROLLOGIX CHASSIS
 1756-BA1 LOGIX5000 BATTERY ASSEMBLY
 1756-CFM 2 CHANNEL /2 OUT CONFIGURABLE FLOWMETER
 1756-CNB CONTROLNET BRIDGE MODULE
 1756-CNBR CONTROLNET REDUNDANT BRIDGE MODULE
 1756-CP3 LOGIX5000 RS232 PROGRAMMER CABLE
 1756-DHRIO 2 CHANNEL DH+ AND/OR RIO SCANNER
 1756-DNB DEVICE NET BRIDGE/SCANNER MODULE
 1756-DPALEN CONTROLLOGIC SYSTEM DOCUMENTATION SET PRINTED
 1756-ENET ETHERNET/IP BRIDGE MODULE
 1756-GTWY CONTROLLOGIC GATEWAY CONFIGURATION SOFTWARE
 1756-GTWYR SUPT REINSTATEMENT CONTRACT FOR 1756GTWY
 1756-GTWYS SUPT RENEWAL CONTRACT FOR 1756GTWY
 1756-HSC 2 CHANNEL /4 OUTPUT HIGH SPEED COUNTER
 1756-IA16 79-132 VAC INPUT 16PTS
 1756-IA16I 79-132 VAC ISOLATED INPUT 16PTS
 1756-IA8D VAC DIAGNOSTIC INPUT 8PTS
 1756-IB16 VDC INPUT 16PTS
 1756-IB16D VDC DIAGNOSTIC INPUT
 1756-IB16I VDC ISLOTED INPUT 16PTS