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FIELDPOINT
AND SPECIFICATIONS
cFP-CB-1/2/3/4
Compact FieldPoint Connector Blocks
These operating instructions describe how to install and use the
cFP-CB-1, cFP-CB-2, cFP-CB-3, and cFP-CB-4 (referred to
inclusively in this manual as the cFP-CB-x).
Features
The cFP-CB-x Compact FieldPoint connector blocks have the
following features:
•
Designed for general-purpose and hazardous-voltage
operation with all Compact FieldPoint I/O modules (cFP-CB-1
and cFP-CB-2)
•
Isothermal construction minimizes temperature gradients for
use with thermocouples (cFP-CB-3)
•
Mounting on a cFP-BP-x or cFP-180x Compact FieldPoint
backplane
•
Up to 36 terminals
•
Tie-wrap anchors for wires (cFP-CB-1 and cFP-CB-3)
•
Front-panel access to terminals (cFP-CB-2 and cFP-CB-4)
•
Removable front-mounted connectors (cFP-CB-2 and
cFP-CB-4)
•
Spring terminals or screw terminals available
•
V and C terminals for voltage supply and common connections
•
–40 to 70 °C operation
™
OPERATING INSTRUCTIONS
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Summary of Contents for National Instruments FIELDPOINT CFP-CB-1
- Page 1 ™ FIELDPOINT OPERATING INSTRUCTIONS AND SPECIFICATIONS cFP-CB-1/2/3/4 Compact FieldPoint Connector Blocks These operating instructions describe how to install and use the cFP-CB-1, cFP-CB-2, cFP-CB-3, and cFP-CB-4 (referred to inclusively in this manual as the cFP-CB-x). Features The cFP-CB-x Compact FieldPoint connector blocks have the following features: •...
- Page 2 1 Tie-Wrap Anchors 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 Earlier cFP-CB-1 connector blocks have a different Note screw-terminal numbering arrangement. –...
- Page 3 – – – – – – CH 0 CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 1 20-Pin Screw-Terminal Block 2 Mounting Screw Figure 4. cFP-CB-4 Parts Locator Diagram © National Instruments Corp. cFP-CB-1/2/3/4...
- Page 4 Wiring to the Connector Block Refer to the I/O module operating instructions for information about wiring configurations, including detailed wiring diagrams and fuse recommendations. To protect the FieldPoint system and connected Note devices, install appropriate external fuses on all terminals. Refer to the Specifications section for the current limits of the cFP-CB-x terminals.
- Page 5 5. Remove the screwdriver to clamp the wire into the terminal. Figure 6. Connecting a Wire to the Spring-Terminal Connector of the cFP-CB-2 6. When the wiring is complete, insert the connector into the cFP-CB-2. © National Instruments Corp. cFP-CB-1/2/3/4...
- Page 6 If your application is subject to high vibration, Note National Instruments recommends installing the NI 9940 backshell on the spring-terminal connector. You can order the NI 9940 from ni.com If your application is subject to hazardous Caution voltage, you must install the NI 9940 backshell on the spring-terminal connector.
- Page 7 4. Tighten the screw terminals to 0.22–0.25 N ⋅ m (1.9–2.2 lb ⋅ in.) of torque. 5. When the wiring is complete, insert the connector into the cFP-CB-4 and tighten the screws on the ends of the connector. © National Instruments Corp. cFP-CB-1/2/3/4...
- Page 8 Hazardous-Voltage Applications If your application is subject to high vibration or hazardous voltage, National Instruments recommends affixing ferrules to the ends of all signal wires. Refer to Figure 10. Figure 10. Inserting a Wire with a Ferrule into the cFP-CB-4 cFP-CB-1/2/3/4 ni.com...
- Page 9 Choose the strain-relief bar that suits your application and complete the following steps: 1. Using a number 2 Phillips screwdriver, install the strain-relief bar on the connector block as shown in Figure 12. Figure 12. Installing the Strain-Relief Bar © National Instruments Corp. cFP-CB-1/2/3/4...
- Page 10 2. Tighten the strain-relief screws. If you are using the cushioned strain-relief bar, make sure all the wires are secure against the cushion and not touching metal parts of the connector block. 3. Reinstall the top cover and tighten the top cover screws. 4.
- Page 11 (10 lb ⋅ in.) of torque. The nylon coating on the screws prevents them from loosening. 1 Connector Block Captive Screws 3 Screw Holes for Connector Block 2 I/O Module 4 Socket for Connector Block Figure 14. Installing the cFP-CB-x © National Instruments Corp. cFP-CB-1/2/3/4...
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Page 12: Thermocouple Wiring
Thermocouple Wiring Compact FieldPoint thermocouple input modules can measure the temperature of the terminals on the cFP-CB-x connector block. The modules use this measurement, called the cold junction temperature, to compensate for the thermoelectric voltages generated at these junctions. For the most accurate cold-junction compensation, use the cFP-CB-3 for connecting thermocouple signals. - Page 13 (including other FieldPoint devices), unless those devices are isolated from human contact. 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-1/2/3/4...
- Page 14 • You must connect the protective earth (PE) ground terminal on the cFP-BP-x or cFP-180x backplane to the system safety ground. The backplane PE ground terminal has the following symbol stamped beside it: . Connect the backplane PE ground terminal to the system safety ground using 14 AWG (1.6 mm) wire with a ring lug.
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Page 15: Safety Guidelines For Hazardous Locations
9 mm (0.35 in.) of insulation stripped from the end Use only copper conductor wire unless you are working with a sensing device, such as a thermocouple, that requires a different type of wire. © National Instruments Corp. cFP-CB-1/2/3/4... - Page 16 Maximum cable diameter for cFP-CB-1 and cFP-CB-3 .... 8 mm (5/16 in.) with cable-grooved strain relief Torque for screw terminals cFP-CB-1 and cFP-CB-3.... 0.5–0.6 N ⋅ m (4.4–5.3 lb ⋅ in.) cFP-CB-4........0.22–0.25 N ⋅ m (1.9–2.2 lb ⋅ in.) Maximum current for terminals V and C terminals.......
- Page 17 UL 61010-1, CSA 61010-1 For UL and other safety certifications, refer to the Note product label or visit , search ni.com/certification by model number or product line, and click the appropriate link in the Certification column. © National Instruments Corp. cFP-CB-1/2/3/4...
- Page 18 Electromagnetic Compatibility This product is designed to meet the requirements of the following standards of EMC for electrical equipment for measurement, control, and laboratory use: • EN 61326 EMC requirements; Industrial Immunity • EN 55011 Emissions; Group 1, Class A •...
- Page 19 Waste Electrical and Electronic Equipment (WEEE) At the end of their life cycle, all products EU Customers must be sent to a WEEE recycling center. For more information about WEEE recycling centers and National Instruments WEEE initiatives, visit ni.com/environment/weee RoHS National Instruments (RoHS)
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Page 20: Where To Go For Support
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545 National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.