National Instruments FP-TB-1, FP-TB-2, FP-TB-3 Operating Instructions Manual

OPERATING INSTRUCTIONS

FP-TB-1/2/3

FieldPoint Terminal Bases

These operating instructions describe the installation, features, and characteristics of the FP-TB-1, FP-TB-2, and FP-TB-3.

Features

The FP-TB-1, FP-TB-2, and FP-TB-3 are FieldPoint terminal bases with the following features:

• Works with all FieldPoint I/O modules (the FP-TB-3 is designed specifically to work with thermocouple I/O modules)

• V andC terminals provide external supply voltages common to all channels

• DIN-rail mounting or panel mounting

• 32 terminals available for field connections (FP-TB-3 has 16)

• Available with screw terminals (FP-TB-1 and FP-TB-3) or spring terminals (FP-TB-2)

• Isothermal construction (FP-TB-3) minimizes temperature gradients when using thermocouples

• –40 to +70 °C operation

The FP-TB-1, FP-TB-2, and FP-TB-3 terminal bases provide the intra-system communication link between FieldPoint I/O modules and network modules, provide a means for wiring field connections, and provide the mounting mechanism. You can choose your terminal base depending on the type of field wiring terminal you prefer: screw terminal or spring terminal.

FIeldPoint™, National Instruments™, NI™, and ni.com™ are trademarks ofNational Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies.

321699D-01

MountingtheFP-TB-1/2/3onaDINRail

Caution

To avoid damaging your network module and terminal base, make sure that the power is not applied to the network module while you install or remove terminal bases.

The FieldPoint terminal bases have simple rail clips for reliable mounting onto a standard 35 mm DIN rail. Follow these steps to mount the terminal base on a DIN rail.

1. Write down the serial number, located on the back of your terminal base, before you mount it on the DIN rail.

2. Use a flat-bladed screwdriver to open the DIN rail clip to the unlocked position, as shown in Figure 1.

1 2

1 Rail clip locked 2 Rail clip unlocked

Figure 1. Unlocking the Rail Clip

3. Attach the lip on the rear of the terminal base onto the top of a 35 mm DIN rail and press it down onto the DIN rail, as shown in Figure 2.

Figure 2. Attaching the Terminal Base to a DIN Rail

FP-TB-1/2/3 Operating Instructions 2 ni.com

4. Slide the terminal base along the DIN rail until its local bus connector mates with the connector of the terminal base or network module adjacent to it.

5. After the terminal base is in position, lock the terminal base to the DIN rail by pushing the rail clip to the locked position.

6. To add more terminal bases, install them on the rail and connect their local bus connectors together.

7. Place the protective cover onto the local bus connector of the last terminal base on the bank, as shown in Figure 3. Add rail locks by sliding them on and tightening the screws as shown in Figure 3.

Figure 3. Adding Rail Locks and Protective Cover

Mounting the FP-TB-1/2/3 to a Panel

Caution

To avoid damaging your network module and terminal base, make sure that the power is not applied to the network module while you install or remove terminal bases.

Follow these steps to mount the terminal base on a wall or panel.

1. Use Figure 4 to locate where to drill the mounting holes on your panel. Dimensions are given in millimeters [inches].

62.48 [2.46]

31.24 [1.23]

44.64 [1.76]

31.24 [1.23]

Figure 4. Locating the Mounting Holes

2. When you have located and drilled the mounting holes, mount the terminal base as shown in Figure 5.

Figure 5. Mounting the Terminal Base

3. Place the protective cover over the local bus connector of the last terminal base in the bank.

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Mounting I/O Modules onto the Terminal Base

Follow these steps to install an I/O module onto a terminal base.

1. Slide the key to the appropriate position for the I/O module as shown in Figure 6. The position marked X is a universal position that works for all modules.

2. Position the I/O module with its alignment slots aligned with the guide rails on the terminal base as shown in Figure 6.

Figure 6. Mounting the I/O Module on the Terminal Base

3. Firmly press the module onto the terminal base. The terminal base latch locks the I/O module into place when the ejector button pops up on top of the terminal base.

4. To remove an I/O module, press the ejector button on top of the terminal base and pull off the module.

Field Wiring

The FP-TB-1 and FP-TB-2 provide four dedicated terminals and 32 numbered terminals defined by the I/O module. The four dedicated terminals are two V and two C terminals, one of each at both ends of the terminal base. The two V terminals are internally connected by the terminal base, as are the two C terminals. Generally, these terminals are intended to connect external power supplies to field devices. FieldPoint I/O modules get their power from the network module through the backplane, and in most cases require no external power for proper operation. Refer to the appropriate I/Omodule operating instructions for details on the use of these terminals and the additional 32 terminals. The FP-TB-3

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