Справочник Пользователя для National Instruments FP-RLY-420

module. The maximum number of terminal bases per bank 
multiplied by 1 watt is the total power the network module can 
supply. For example, an FP-1000 or FP-1001 can support nine 
terminal bases (9*1 W = 9 W).

Next, refer to the specifications section in the operating 
instructions for the I/O modules. Use the Power from Network 
Module specification. For example, a bank of modules consisting 
of four FP-RLY-420 and five FP-DI-301 modules requires a total of 
8.4 W from the FieldPoint network module [4*(1.7 W) + 5*(0.325 
W) = 8.4 W]. This power requirement is less than the 9 W 
maximum and is therefore acceptable.

The FP-RLY-420 mounts on a FieldPoint terminal base 
(FP-TB-xx) unit. The hot plug and play operation of the 
FP-RLY-420 allows you to install it onto a powered terminal base 
without disturbing the operation of other modules or terminal 
bases. The FP-RLY-420 receives operating power from the 
terminal base.

To install the FP-RLY-420, refer to Figure 1 and follow these steps:

1. Slide the terminal base key to either position X (used for any 

module) or position 7 (used for the FP-RLY-420 module).

2. Align the FP-RLY-420 alignment slots with the guide rails on 

the terminal base.

3. Press firmly to seat the FP-RLY-420 on the terminal base. The 

terminal base latch locks the FP-RLY-420 into place when it is 
firmly seated.

Figure 1.  Module Installation Diagram

Alignment

Slot

Key

Latch

Guide Rails

Terminal Base

I/O Module