National Instruments FP-RLY-420 - Manual
National Instruments FP-RLY-420 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Installation; Slide the terminal base key to either position X (used for any
- Page 3 – Field Wiring; nel; COM
- Page 4 – Figures 2a and 2b show examples of basic wiring connections.; Relay Output Circuit; In the ON state, there is an effective resistance of 100 m
- Page 5 – Figure 3 shows the diagram of one channel’s relay output circuit.; Contact Protection for Inductive Loads; Guidelines for Selecting Contact Protection Circuits
- Page 6 – Diode and Zener Diode Circuit; Diagram
- Page 7 – Diode Circuit
- Page 8 – Status Indicators; Type of Load
- Page 9 – Isolation and Safety Guidelines; Caution; Read the following information before
- Page 10 – Specifications; Input Characteristics; Nonlatching; Note; Expected Life
- Page 11 – Maximum switching frequency; Physical; EMC Directive
FieldPoint
™
is a trademark of National Instruments Corporation. Product and company names
mentioned herein are trademarks or trade names of their respective companies.
321904B-01
©
Copyright 1998, 1999 National Instruments Corp. All rights reserved. June 1999
OPERATING INSTRUCTIONS
FP-RLY-420
8-Channel, SPST Relay Module
These operating instructions describe the installation, features, and
characteristics of the FP-RLY-420. For details on configuring and
accessing the FP-RLY-420 over a network, refer to the user manual
for the particular FieldPoint network module you are using with
the FP-RLY-420.
Features
The FP-RLY-420 is a FieldPoint relay output module with the
following features:
•
Eight Single-Pole Single-Throw (SPST) relay channels
•
Switching capacity 3 A at 35 VDC or 250 VAC
•
On/Off LED indicators
•
Hot plug and play operation
•
3,000 V input to output isolation
•
Double insulated for 250 V safe working voltage
•
– 40 to +70 °C operation
Power Requirement
The FP-RLY-420 is powered via the local backplane bus from the
FieldPoint network module. The FP-RLY-420 is a high-power
consumption module and requires more than the nominal power
allocated to an I/O module from the network module. In some
applications, this could limit the number of I/O modules that you
can connect to a single network module.
When defining a FieldPoint system that uses an FP-RLY-420
module, you must calculate the power consumption. First refer
to the specifications section in the user manual for your network
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Summary
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 instr...
© National Instruments Corp. 3 FP-RLY-420 Field Wiring The terminal base has connections for each of the eight relay channels and an external supply to power field devices. Each relay channel of the FP-RLY-420 has two terminals: N.O. (Normally Open) and I.C. (Isolated Common). The external supply is...
FP-RLY-420 4 www.natinst.com Figures 2a and 2b show examples of basic wiring connections. Figure 2. Basic Field Connection (Two Channels Shown) Relay Output Circuit The outputs of the FP-RLY-420 consist of Form A electromechanical relays. The power-up state is off (open) to ensure safe installation....
