National Instruments cFP-CB-1 Operating Instructions Manual

Compact fieldpoint connector blocks
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Summary of Contents for National Instruments cFP-CB-1

  • Page 1 cFP-CB-1...
  • Page 2 FieldPoint™, National Instruments™, NI™, and ni.com™ are trademarks of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents .
  • Page 3 4 Screw Hole for Top Cover 2 Screw Hole for Strain-Relief Bar 5 Mounting Screw 3 Screw Terminals 6 37-Pin I/O Connector Figure 1. cFP-CB-1 Parts Locator Diagram Note Earlier cFP-CB-1 connector blocks have a different screw-terminal numbering arrangement. – – – – –...
  • Page 4 Figure 3. Removing the Top Cover from the cFP-CB- x 2. Verify that there are no cuts in the wire insulation that can cause a safety hazard. 3. Strip 6 mm (0.24 in.) of insulation from the ends of the wires. © National Instruments Corp. cFP-CB-1 and cFP-CB-3...
  • Page 5 0.5–0.6 N ⋅ m (4.4–5.3 lb ⋅ in.) of torque. Installing the Strain-Relief Bar The cFP-CB-1 is shipped with two strain-relief bars, one with a foam cushion for wires and one with grooves for jacketed cables. The cFP-CB-3 has one foam-cushion strain relief bar. The tie-wrap anchors on the connector block provide additional strain relief.
  • Page 6 3. Using a number 2 Phillips screwdriver with a shank of at least 64 mm (2.5 in.) length, tighten the captive screws to 1.1 N ⋅ m (10 lb ⋅ in.) of torque. The nylon coating on the screws prevents them from loosening. © National Instruments Corp. cFP-CB-1 and cFP-CB-3...
  • Page 7: Thermocouple Wiring

    Figure 7. Installing the cFP-CB- x Thermocouple Wiring Compact FieldPoint thermocouple input modules can measure the temperature of the terminals on the cFP-CB-1 or cFP-CB-3 connector block. The modules use this measurement, called the temperature, to compensate for the thermoelectric cold junction voltages generated at these junctions.
  • Page 8 Working voltage is defined as the signal voltage plus the common-mode voltage. Common-mode voltage is the voltage of the module with respect to ground. © National Instruments Corp. cFP-CB-1 and cFP-CB-3...
  • Page 9 250 V • Operate the cFP-CB-x only at or below Pollution Degree 2. Pollution Degree 2 means that only nonconductive pollution occurs in most cases. Occasionally, however, a temporary conductivity caused by condensation must be expected. cFP-CB-1 and cFP-CB-3 ni.com...
  • Page 10: Specifications

    Use fast-acting fuses to limit the current through screw terminals. Some I/O module terminals require a lower maximum current value. Refer to the I/O module operating instructions for more information. © National Instruments Corp. cFP-CB-1 and cFP-CB-3...
  • Page 11: Isolation Voltage

    Physical Weight cFP-CB-1........201 g (7.1 oz) cFP-CB-3........201 g (7.1 oz) Isolation Voltage Isolation voltage rating ..... 250 V , Installation Category II Transient overvoltage......2,300 V Channel-to-channel isolation .... Refer to I/O module operating instructions Caution Improper wiring may defeat isolation barrier.
  • Page 12: Electromagnetic Compatibility

    Directive (EMC) ....... 89/336/EEC Note Refer to the Declaration of Conformity (DoC) for this product for any additional regulatory compliance information. To obtain the DoC for this product, click Declarations of Conformity Information at ni.com/hardref.nsf/ © National Instruments Corp. cFP-CB-1 and cFP-CB-3...
  • Page 13: Where To Go For Support

    Where to Go for Support For more information about setting up the Compact FieldPoint system, refer to these National Instruments documents: • Compact FieldPoint controller user manual • Compact FieldPoint I/O module operating instructions Go to for the most current manuals, examples, ni.com/support...

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