National Instruments 779567-01 Backshell Connector Kit

Part Number 779567-01 is the identifying part number for the National Instruments  NI-9940 Backshell Connector Kit. The backshell connector is designed to work with 36-position spring terminal connectors on devices such as the National Instruments NI-9375 C Series Digital Modules or the cRIO-9974 Terminal Block Plug. The major function of this accessory is to protect the operator from electric shocks and hazards during the operation of the said devices. The 779567-01 is typically used in industrial settings where the automation systems involve high voltage levels. This is because it is built with industrial-grade plastic with powerful insulation that can withstand high voltage levels. 

The 779567-01 is one of the safety measures to protect the device and the operator from hazardous voltages. When using the kit with a device such as the NI-9375, there are other multiple precautions that the user must take. First, you should only connect voltages that are within the stated limits. In the NI-9375, the maximum voltage between channel-to-COM or Vsup-to-COM should be 30 VDC. Likewise, the DI bank-to-DO bank has a maximum isolation voltage of 60 VDC. Furthermore, there is no isolation between channels while the channel-to-earth-ground has an isolation voltage of 60 VDC and falls under Measurement Category I. 

When using the 779567-01 with devices like the NI-9375, you should also ensure proper ambient conditions for their operation. First, the ambient temperature must range between -40 °C to 70 °C at a relative humidity of 10% to 90%. Likewise, this module is only used in indoor settings within a maximum altitude of 5000 m.