HE693THM809C GE 供电

A-B 1756-L61
WESTINGHOUSE 1C31203G01
BENTLY NEVADA 3500/50
YOKOGAWA CP451
SST SST-PB3-CLX
HONEYWLL TK-PRS021
SCHNEIDER AS-J890-102
ESTIC ENRZ-AU40-10
ABB SDCS-FEX-4
Cutler-Hammer KT3315TA
PFEIFFER EVR116
HONEYWELL TC-PRS021
A-B 1440-RMA00-04RC
GE TPMC815-11

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Description

对电磁干扰较强、而对PLC可靠性要求又较高的场合,PLC的供电应与动力供电和控制电路供电分开;必要时,可采用带屏蔽的隔离变压器供电、串联LC滤波电路等。在设计时,外接的直流电源应采用稳压电源,供电功率应留有20%~30%的余量。对由控制器本身提供的直流电源,应了解它所能提供的最大电流,防止过电流造成设备的损坏。

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