西门子S7-300信号电缆6XV1830-0EH10

品牌：	西门子
单价：	9.00元/米
起订：	20 米
供货总量：	10000 米
发货期限：	自买家付款之日起 3 天内发货
所在地：	上海市松江区
有效期至：	长期有效
最后更新：	2019-04-01 09:34
浏览次数：	67

公司基本资料信息

上海诗幕自动化公司
[VIP第3年] 指数:1
已缴纳 0.00 元保证金
联系人张小龙(先生)
会员 [当前离线] [加为商友] [发送信件]
电话
地区上海市-松江区
地址上海市松江区仓轩路10号

详细说明

当plc的用户程序要保留在ram中时，就会用到电池，电池通常是3v或3.6v的不可充电的锂电池，电池的使用寿命通常是五年左右，电池用久了，电压就会下降，当其下降到不足以保证ram中数据时，ram中的程序就会丢失。如果用户没有备份程序，就会相当麻烦。[1]

一般plc内部设有电池电压检测电路，当电压下降到一定程度时，plc就会报警，提醒更换电池。plc的使用说明书都有提供更换电池的方法。一般来说，plc在断电后，因为plc上ram电源端接有充电电容，即使把电池去掉，电容上充电电量也足够ram内的数据保持一段时间，所以如果取掉电池后在短时间内（通常5分钟）再将新电池换上去，数据是不会丢失的。

但用户实际使用plc的环境情况不尽相同，例如电容的容量下降，ram电源回路有灰尘、油泥等形成放电回路等，这会加快plc断电后电容的放电速度，从而使时间不好把握。如果在带电的情况下更换电池就可保程序万无一失。因为电源始终会有电压加在ram芯片的电源脚。当然更换时亦要小心应对，注意电池的极性以及避免短路情况发生。

好是把plc通电15分钟（给内部电容充电），断电，在5分钟内换好新的电池，再上电试一下。

西门子plc有带卡的，有不带电池的；也有带卡的，带电池的。程序存在mmc卡中，如果没有存储卡，需要电池保存程序的，更换电池时候务必注意，带电的情况下，将旧电池取出来，然后将新电池换上即可。

Number of electrical cores	2	2	2	2
Design of the shield	Overlapped aluminum-clad foil, sheathed in a braided screen of tin-plated copper wires	Overlapped aluminum-clad foil, sheathed in a braided screen of tin-plated copper wires	Overlapped aluminum-clad foil, sheathed in a braided screen of tin-plated copper wires	Overlapped aluminum-clad foil, sheathed in a braided screen of tin-plated copper wires
Type of electrical connection FastConnect	Yes	Yes	Yes	Yes
Core diameter
● of AWG22 core		0.64 mm
Outer diameter
● of inner conductor	0.65 mm	0.64 mm	0.65 mm	0.65 mm
● of the wire insulation	2.55 mm	2.55 mm	2.55 mm	2.55 mm
● of the inner sheath of the cable	5.4 mm	5.4 mm	5.4 mm	5.4 mm
● of cable sheath	8 mm	8 mm	8 mm	8 mm
Symmetrical tolerance of the outer diameter of cable sheath	0.4 mm	0.4 mm	0.4 mm	0.4 mm
Material
● of the wire insulation	PE	PE	PE	PE
● of the inner sheath of the cable	PVC	PVC	PVC	PVC
● of cable sheath	PVC	PVC	PUR (TPE-U)	PE; Outer cover made of PE is especially suitable for the food processing industry
Color
● of the insulation of data wires	red/green	red/green	red/green	red/green
● of cable sheath	Violet	blue	Violet	Black
Bending radius
● with single bend minimum permissible	37.5 mm	37.5 mm	75 mm	30 mm
● with multiple bends minimum permissible	75 mm	75 mm	150 mm	60 mm
Tensile load maximum	100 N	100 N	100 N	100 N
Weight per length	80 kg/km	80 kg/km	71 kg/km	67 kg/km
Permitted ambient conditions
Ambient temperature
● during operation	-40 ... +75 °C	-40 ... +75 °C	-40 ... +60 °C	-40 ... +60 °C
● during storage	-40 ... +75 °C	-40 ... +75 °C	-40 ... +60 °C	-40 ... +60 °C
● during transport	-40 ... +75 °C	-40 ... +75 °C	-40 ... +60 °C	-40 ... +60 °C
● during installation	-40 ... +75 °C	-40 ... +75 °C	-40 ... +60 °C	-40 ... +60 °C
● Note	Electrical properties measured at 20 °C, tests according to DIN 47250 part 4 respectively DIN VDE 0472	Electrical properties measured at 20 °C, tests according to DIN 47250 part 4 respectively DIN VDE 0472	Electrical properties measured at 20 °C, tests according to DIN 47250 part 4 respectively DIN VDE 0472	Electrical properties measured at 20 °C, tests according to DIN 47250 part 4 respectively DIN VDE 0472
Burning behavior	flame resistant according to IEC 60332-3-24 (Category C) and UL 1685 (CSA FT 4)	flame resistant according to IEC 60332-3-24 (Category C)	flame resistant according to IEC 60332-1	inflammable
Chemical resistance
● to mineral oil	oil resistant according to IEC 60811-2-1 (4 hours / 70°C)	oil resistant according to IEC 60811-2-1 (4 h / 70°C)	oil resistant according to IEC 60811-2-1 (7x24h/90°C)	oil resistant according to IEC 60811-2-1 (4 h / 70°C)
● to grease	Conditional resistance	Conditional resistance	resistant	Conditional resistance
● to water	conditional resistance	conditional resistance	conditional resistance	conditional resistance
Radiological resistance to UV radiation	resistant	resistant