National Instruments FP-RLY-420 - Manual (Page 2)

FP-RLY-420 2 www.natinst.com
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.
Installation
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