EPRO 9268/200-000
(6)液位传感器——输入信号反映液压油箱、润滑液箱、冷却液箱、回流液箱内液面的高低。
尚有另外一些输入信号,借助予一些按钮和开关送到PLC中从略。
PLC 的输出信号比较简单。PLC的24VDC电源输出与各继电器线圈、电磁阀线圈或指示灯等元件相连,或驱动某元件动作,或发出某信号。电气原理图中对PLC 输出信号的注释往往有很明确的含义,维修人员不会误解。例如,某输出信号A××.×的注释是:“夹紧工作台”,则我们可以立即知道:当输出信号A××.× =“1”(逻辑“1”,即24VDC)时,就会发生夹紧工作台的动作。把A××.×=“1”跟注释内容对应起来,划***号。
然而,对于PLC的输入信号,情况则不然,因为E××.×=“1”跟注释内容并不一定能对等起来。我们把输入信号=“1”与注释内容相对应称为“正逻辑”注释法;把输入信号=“0”与注释内容相对应称为“负逻辑”注释法。例如,我公司CW800加工中心上用E8.7=“1”表示“液压油温度太高”,使用了 “正逻辑”的注释法,而另一台CW500加工中心,虽出自同一制造厂,却以E23.1=“0”表示“液压油温度太高”,使用了“负逻辑”注释法。
一台机床的PLC输入信号注释如果全部使用“正逻辑”,会给故障诊断带来很大的方便;
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BOSCH 3-842-503-063?GEAR REDUCER NEW 3842503063
BOSCH 0-830-100-386?CYLINDER SWITCH NIB0830100386
BOSCH 0-821-303-008?FILTER 0821303008
FLOW CONTROL VALVE LOT
BOSCH 0-821-303-015?CONDENSATE FILTER NEW 0821303015
BOSCH 0-821-300-911?SHUT-OFF VALVE NIB 0821300911
BOSCH 1-825-503-235?MANIFOLD SUBPLATE NEW 1825503235
BOSCH 1-825-503-143?SUBPLATE 1825503143
BOSCH 3-842-346-521?CODE SETTER FASTENER?KIT LOT
BOSCH 0-820-034-991?SOLENOID VALVE 0820034991
BOSCH 0-820-024-602?SOLENOID VALVE 0820024602
BOSCH 3-842-318-826?ITEM 3842318826
BOSCH 1-825-503-813?SUB BASE 1825503813NEW
BOSCH 0-820-222-506?DIRECTIONAL VALVE 0820222506
BOSCH 0-820-027-997?SOLENOID VALVE 0820027997
BOSCH 0-821-303-533?AIR FILTER NIB 0821303533
BOSCH 0-820-020-179?PNEUMATIC VALVE 0820020179
BOSCH 0-830-100-386?CYLINDER SWITCH 0830100386
BOSCH 3-842-184-710?NEW 3842184710
BOSCH 3-842-503-066?GEAR REDUCER NEW 3842503066
BOSCH 0-821-200-188?FLOW CONTROL VALVE NEW 0821200188
BOSCH 0-821-303-015?AUTODRAIN G1/4 NEW 0821303015
BOSCH 1-825-503-897?VALVE MANIFOLD 1825503897
BOSCH 0-821-301-402?LUBRICATOR 0821301402
BOSCH 0-820-212-001?VALVE NEW 0820212001
BOSCH 3-842-184-750?PAN STOPPER 3842184750 NIB
BOSCH 3-842-328-258?PROXIMITY SWITCH LOT?3842328258 NEW
BOSCH 0-821-100-011?PRESSURE SWITCH NIB?0821100011
BOSCH 1-825-503-235?MANIFOLD SUBPLATE NEW 1825503235
BOSCH 1-834-484-101?CONNECTOR 1834484101
HERION 3030 110/120V?COIL NEW
BOSCH 0-820-227-003?PILOT VALVE NIB 0820227003
BOSCH 0-820-005-251?SOLENOID VALVE NIB 0820005251
BOSCH 0-820-045-102?SOLENOID VALVE NEW 0820045102
BOSCH 0-820-227-002?PILOT VALVE NIB 0820227002
BOSCH 0-821-100-021?PRESSURE SWITCH NIB?0821100021
BOSCH 0-821-300-931?CONTROL VALVE NIB 0821300931
BOSCH 8-981-011-601?MANIFOLD 8981011601
BOSCH 0-820-027-997?SOLENOID VALVE 0820027997
BOSCH 0-820-220-004?INLINE VALVE 0820220004
BOSCH 0-821-200-145?FLOW CONTROL KIT NEW?0821200145
BOSCH 3-842-503-579?GEAR REDUCER NEW 3842503579
BOSCH 0-830-100-461?CYLINDER SWITCH 0830100461
BOSCH 0-821-300-911?SHUT-OFF VALVE 0821300911
BOSCH 1-825-503-049?END PLATE KIT 1825503049
BOSCH 0-821-300-935?FILLING VALVE 0821300935
BOSCH 0-820-024-998?SOLENOID VALVE 0820024998
BOSCH 0-820-027-997?SOLENOID VALVE 0820027997
BOSCH 0-820-045-201?VALVE 0820045201 NEW
BOSCH 0-820-024-076?SOLENOID VALVE 0820024076
BOSCH 0-820-024-998?SOLENOID VALVE 0820024998
BOSCH 0820020179/0820222506/0821400232
BOSCH 0-821-301-402?LUBRICATOR 0821301402
BOSCH 0-820-024-998?SOLENOID VALVE LOT 0820024998
BOSCH 9-820-230-035?SOLENOID VALVE NIB 9820230035
BODINE 42Y3BFPP MOTOR WITH BOSCH GEAR BOX
BOSCH 8-981-012-600?E-STOP SWITCH 8981012600
BOSCH 3-842-168-520?CODE SETTER 3842168520
BOSCH 3-842-501-754?JOURNAL BEARINGS 3842501754
BOSCH 0-821-400-232?VALVE MANIFOLD 0821400232
BOSCH REXROTH GS-030010-03535 CERAM VALVE NIB GS03001003535
BOSCH 0-820-027-226?SOLENOID VALVE 0820027226
BOSCH 0-820-027-226?SOLENOID VALVE 0820027226
BOSCH 3-842-305-620?GRIPPER 3842305620
BOSCH 0-820-034-991?SOLENOID VALVE 0820034991
BOSCH 8-981-527-044?GEAR REDUCER NEW 8981527044
BOSCH 0-820-034-026?SOLENOID VALVE 0820034026
BOSCH 0-821-303-050?OIL SEPARATOR NIB 0821303050
BOSCH 3-842-184-720?NIB 3842184720
BOSCH 3-842-184-710?NIB 3842184710
BOSCH 1-825-503-235?VALVE MANIFOLD LOT 1825503235
BOSCH 0-820-021-121?SOLENOID VALVE LOT 0820021121
BOSCH 0-821-301-010?OILER NIB 0821301010
BOSCH 1-825-503-235?MANIFOLD SUBPLATE LOT 1825503235
BOSCH 8-981-011-601?LOT 8981011601
BOSCH 8-981-530-111?FLOW CONTROL KIT NEW?8981530111
BOSCH 0-820-034-051?SOLENOID VALVE 0820034051
BOSCH 0-830-100-485?CYLINDER SWITCH 0830100485
BOSCH 1-823-391-175?FITTING LOT 1823391175
BOSCH 3-842-512-951?GEAR REDUCER NEW 3842512951
BOSCH 3-842-517-265?GRIPPER 3842517265
BOSCH 0-820-027-997?SOLENOID VALVE 0820027997
BOSCH 1-825-503-897?MANIFOLD BLOCK NEW 1825503897
BOSCH 3-842-510-739?CYLINDER SWITCH KIT3842510739
BOSCH 0-822-933-122?ROTARY ACTUATOR NEW?0822933122
BOSCH 3-842-174-360?CODE READER 3842174360
BOSCH 0-821-305-028?VACUUM PUMP NIB 0821305028
BOSCH 0-821-100-010?PRESSURE SWITCH NIB?0821100010
BOSCH 0-820-028-026?SOLENOID VALVE 0820028026
BOSCH 0-821-302-001?REGULATOR NIB 0821302001
BOSCH 3-842-501-754?LINEAR SUPPORT BEARINGS 3842501754
BOSCH 3842184330 GRIPPER WITH 3842117760?ROTARY ACTUATOR
BOSCH 3-842-213-170?ASSEMBLY 3842213170
BOSCH 3-842-188-610?CODE SETTER 3842188610
BOSCH 0-820-024-126?SOLENOID VALVE 0820024126
BOSCH 0-820-024-029?SOLENOID VALVE 0820024029