185151B-01
National Instruments
185151B-01
National Instruments
Description
The 185151B-01 FP-RLY-420 is an 8-channel SPST Relay Output Module with high-quality relays for FieldPoint applications, featuring a maximum switching frequency of 20 operations per second. With integrated protection MOVs and a 3 A, 250 V fuse for module and load protection, this reliable module offers 250 Vrms continuous isolation between communication bus and backplane.
The 185151B-01 FP-RLY-420 is an 8-channel SPST Relay Output Module designed by National Instruments for FieldPoint applications. This module, also known as the NI FP-RLY-420 (Part Number: 777518-420), features eight single-pole single throw channels capable of switching up to 3 amperes at 35 VDC or 250 VDC. Each relay channel on this module has two terminals - NO and IC, with all Vsup and COM terminals internally connected. For module and load protection, a fast-acting 3 A, 250 V fuse can be installed at the IC terminal. The FP-RLY-420 operates with integrated protection MOVs to prevent excessive voltage across the contacts, and offers 250 Vrms continuous isolation between the inter-module communication bus and the backplane. With high-quality relays, this module provides a maximum switching frequency of 20 operations per second and an electrical switching frequency of 1 operation per second at maximum load. Safety measures ensure a rated operate, release, and bound time of 8 ms, 4 ms, and 4 ms respectively. Please note that the FP-RLY-420 is not intended for new designs but remains a reliable and effective relay module for FieldPoint systems.
| Made By | National Instruments |
|---|---|
| Part Number | 185151B-01 / 777518-420 |
| Type | 8-Channel SPST Relay Output Module |
| Maximum Switching Capacity | 3 amperes at 35 VDC or 250 VAC |
| Safety Features | Integrated protection MOVs, 250 Vrms continuous isolation, fast-acting 3 A, 250 V fuse option |
| Electrical Specifications | Operating frequency: 20 operations/second (max switching), 1 operation/second (electrical switching at max load), 150 mΩ effective resistance |
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Question:
What is the maximum current that can be switched by the NI FP-RLY-420 relay module?
Answer:
The NI FP-RLY-420 relay module can switch up to 3 amperes.
Question:
What are the voltage ratings for switching on the NI FP-RLY-420?
Answer:
The module can switch at 35 VDC or 250 VDC.
Question:
How many relay channels does the 185151B-01 FP-RLY-420 have, and what are their configurations?
Answer:
The 185151B-01 FP-RLY-420 has 8 channels, and each one is a single-pole single throw (SPST) configuration.
Question:
What type of protection do the relay channels on the FP-RLY-420 offer against excessive voltage?
Answer:
The relay channels on the FP-RLY-420 are protected against excessive voltage with integrated protection Metal Oxide Varistors (MOVs).
Question:
What is the continuous isolation voltage between the inter-module communication bus and the backplane for the FP-RLY-420?
Answer:
The FP-RLY-420 provides 250 Vrms continuous isolation between the inter-module communication bus and the backplane.