夜晚来了我还依然睁着眼睛,是因为我看见了你留在月光下的痕迹。 33、在这城市里,我相信一定会有那麽一个人,想着同样的事情,怀着相似的频率,在某站寂寞的出口,安排好了与我相遇. 34、用一转身离开,用一辈子去忘记。 35、时间没有等我,是你忘了带我走,我们就这样迷散在陌生的风雨里,从此天各一方,两两相忘。 一.PLC 的主要特点 :高可靠性 1)所有的I/O 接口电路均采用光电隔离,使工业现场的外电路与PLC 内部电路之间电气上隔离。 2)各输入端均采用R-C滤波器,其滤波时间常数一般为10~20ms。 3)各模块均采用屏蔽措施,以防止辐射干扰。 4)采用性能优良的开关电源。 5)对采用的器件进行严格的筛选。 6)良好的自诊断功能,一旦电源或其他软、硬件发生异常情况,CPU立即采用有效措施,以防止故障扩大。 7)大型PLC 还可以采用由双CPU 构成冗余系统或有三CPU 构成表决系统,使可靠性更进一步提高。 二.产品优点:使用安全PLC 及安全网络的优点包括: 1 机械控制更大的集成性和灵活性 2 当标准控制层智能化时,能够进行更好更容易的故障诊断 3 更快、更方便的维护 4 减少安装、调试以及重新配置的费用 5 与对于逻辑单独使用安全继电器相比,降低了设计和硬件成本 6 提高复杂系统生产性能的潜在能力通信 ABB ACS350-03U-01A2?-4 480V 1/2HP DRIVE * NEW ABB DSQC 243 Serial Measurement Board 3HAA 0001 NEW ABB 3E-031978 APPCU-03 Purging Control Board ABB IRO 2000 Robot ABBIRO Panel View 1200 ABB 3HAB-2211-1-1 BOARD DSQC-256-A ABB3HAB221111 ABB CONNECTOR CABLE VERBINDER MOTOR S3-S6 F 1M 1SDA0138 ABB 3HAB2211-1-1 BOARD DSQC-256A 3HAB221111 ABB 3HAB2211-1-1 BOARD DSQC-256A 3HAB221111 ABB 3HAB-2207-01 BOARD 3HAB220701 DSQC-236D ABB YT213001BC DRIVE UNIT YT 213 001-BC NEW ABB DP30C3P-F DP CONTACTOR DP30C3PF 3HAA0001-ADY/1 ABB ROBOTICS ABB DSQC 325 main computer board 3HAB2241-1 ABB, ABB Robot, DSQC 346G, 3HAB 8101-8, ABB Servo Drive ABB S4C servo drive, ABB S4C+ servo drive ABB 3HAB8413-001 BOARD 3HAB8413001 ABB 3BUR000820R1 TC672MEDIA Atchment Unit New NEW!! ABB Robot S4C+ IRB6400 Rex 2.8 meter arm 150KG NEW ABB ROBOT DRIVE CONTROL POWER CARD YYE109A ABB Etherlink Board 3E-042735, Repaired NEW ABB 3HAB-2211-1/1 BOARD DSQC-256-A ABB3HAB221111 abb ach 500 3hp vfd drive VARIABLE FREQUENCY speed 480v ABB ASEA BROWN BOVERI DRH-10050 SERVO DRIVE ABB YYT 102G CIRCUIT BOARD YT212001-AP/4 ABB OS 30AJ12 DISCONNECT SWITCH 30A 3P 600V J FUSE*XLNT ABB 3HAB 8797-1 / 2B Servo Power Unit DSQC 266B, NEW ABB ACS401602532 480vac 3phase drive 30hp 41amp New ABB 3HNP-01307-1 Universal Pump ABB 3HAA3560BBA TEACH PENDANT 3HAA 3560-BBA ABB 3E031810 OUTPUT BOARD NEW 3E 031810 abb ach 500 40hp vfd drive VARIABLE FREQUENCY speed 480 ABB 3E 032215 MULTIPLEXER BOARD 3E032215 NEW ABB MS325-4,0 MANUAL MOTOR STARTER, NEW IN BOX New ABB ACS55-01N-01A4-?1 Drive ABB CAL5-11 CAL511 AUXILIARY CONTACT 1NO/1NC **XLNT** ABB GFMITS-3 Control Unit 24VDC #6306 ABB 18321-10012 P/I Converter TEPI11 TE PI 11 New ABB DSQC 239 REMOTE I/O BOARD 668-165-14/3 QTY X 2 Used ABB YB-560-103-BD/3 BOARD DSQC 223 YB560103BD3 USED ABB E-31712 Paint Teach Pendant Programming Unit ABB Robotics Transformer 3E 032039, NEW ABB (Asea Brown Boveri) Driver, P/N- 600363, S/N 8940 ABB PC Board DSPC153 57310256-BA/1 #10931-33 ABB PC BOARD 3HAA3563-AGA/2 NEW 3HAA3563AGA2 ABB ACS350-03U-09A8?-2 DRIVE (3 HP) BRAND ABB 3HAC17971-1 I/O MODULE NEW 3HAC179711 ABB YB161102-AC/1 DSQC102 Power Unit Board ABB E31978 PURGING CONTROL BOARD E-31978 ABB E32767 PURGING CONTROL BOARD E-32767 ABB E32767 PURGING CONTROL BOARD E-32767 ABB A50-30-11-84/B5?0C-F CONTACTOR 3-P 120VAC COIL *XLNT ABB DSQC 236B Drive Unit YB560103-CB ABB SACE PR112/P-A AC Trip Unit Overcurrent release NOS 50hp vfd adjustable frequency drive abb 1336 480v 3r