ABB HIEE300043R1 Thermal resistance card

Power supply capacity limitation Up to eight modules per unit can be mounted on SNB10D safety node unit and SSC60/SSC50/SSC10 safety control unit; however, the number differs by power supply capacity. Use the Table “Coefficients of Module (temperature type)” to calculate the sum of Coefficient A and B, and figure out the number that both ∑(coefficient A) + ∑(coefficient B) and ∑(coefficient B) are satisfied within the value shown in the Table “ Power Supply Capacity Limitation (temperature type, 60°C or lower)”. The values shown in the Table “Power Supply Capacity Limitation (temperature type, 60°C or lower)” differ by the installation environments such as for standard installation and explosion protection.

When SNB10D safety 

node unit and SSC60-F /SSC50-F/SSC10-F safety control unit for wide range temperature type are used in the ambient temperature of more than 60 °C, available channel of I/O module, maximum load current, external power supply voltage, and mounting location are also restricted as shown below, in addition to the power supply capacity. There are two types I/O module available - “ISA Standard G3 and temperature” type and “ISA Standard G3 and highdensity installation” type. For example, the maximum of eight modules can be mounted on a safety node unit for ISA Standard G3 and high-density installation type and four for ISA Standard G3 and temperature type per unit. ISA Standard G3 and high-density installation type improves the installation efficiency.

For ISA Standard G3 and High-density Installation Type 

By selecting the ISA Standard G3 and high-density installation type listed on the Table “Coefficients of Module (highdensity installation type)”, I/O module can be installed side by side without leaving an empty slot. SAI143-S3, SAI533-H3, ALR121-S3 and ALE111-S3 allow usages of ISA Standard G3 and temperature type in the same situation as ISA Standard G3 and high-density installation type. Do not mixedly install I/O modules other than listed on the Table “Coefficients of Module (high-density installation type)” on the same node unit. If different types of modules are mounted together, apply the installation conditions of the ISA Standard G3 and temperature type. Power supply capacity limitation When ISA Standard G3 and high-density installation type is used at the ambient temperature of more than 60 °C, make sure that Σ (coefficient A) + Σ (coefficient B), Σ (coefficient A) and Σ (coefficient B) must fall within the value shown on the Table “Power Supply Capacity Limitation (high-density installation type)”.

Application industry

The products can be used in the following industries: power plant, paper making, steel, mining, rubber, water supply, cement, chemical industry, glass, printing

Textile, machinery, plastics, coatings, medicine, hospitals, food, hotels, scientific research institutions

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