05701-A-0325 Overview

The 05701-A-0325 DC Input Card Honeywell is a DC Input Card for the System 57 rack. It provides a protected and filtered 24V DC power input, incorporates reverse polarity and RFI protection, and facilitates connections for engineering module options.

Technical Data Summary

Model Number: 05701-A-0325, designated as a DC Input Card.

Input Voltage: Accepts a nominal 24V DC external supply, with a typical range of 12V to 48V DC.

Key Protection: Provides fuse protection, RFI filtering, and reverse polarity protection for the rack.

Power Distribution: Routes power to the rack backplane (capped at 8A) and optionally supports a standby battery.

Interface Function: Serves as an interface for Engineering Card plug-in modules (e.g., Modbus, Event Printing).

Environmental Rating: Operates within a -10°C to +60°C temperature range.

FAQ

Q1: What is the primary function of the Honeywell 05701-A-0325 card?

A1: It is a DC Input Card that serves as the primary power entry and distribution point for a System 57 rack, accepting an external 24V DC supply.

Q2: What protection features does the DC Input Card provide?

A2: The card provides fuse protection for the rack backplane, RFI (Radio Frequency Interference) filtering, and reverse polarity protection for the input power.

Q3: Can a backup battery be connected to this card?

A3: Yes, a standby backup battery supply can be connected to the auxiliary (AUX) DC input connections, which are isolated from the main power supply.

Q4: What is the maximum recommended current for the rack backplane?

A4: The current flow along the rack backplane must be limited to a maximum of 8 Amperes (8A).

Q5: Does this card interface with other system modules?

A5: Yes, it provides an interface (via terminal block TB2) for Engineering Card plug-in modules, such as Modbus, Event Printing, and Alarm Update options.