ABB 07 KR 220 R2 | Relay Supply Module

Isolated Power for Relay Circuits

The ABB 07 KR 220 R2 supplies isolated power specifically for relay output modules. This unit ensures clean, regulated voltage for field device switching applications. It prevents electrical noise from traveling back to the control system. Engineers choose this module for reliable solenoid and actuator control.

Detailed Technical Specifications

This section outlines the precise technical parameters of the ABB 07 KR 220 R2. We emphasize electrical ratings and physical characteristics for accurate system integration. The design prioritizes isolation and protection for critical field circuits.

Specification	Detail
Model Number	07 KR 220 R2
Manufacturer	ABB
Product Type	Relay Supply Module
Series	Advant OCS / S100
Input Voltage	24 VDC (From System Backplane)
Output Voltage	24 VDC (Isolated)
Output Current	2 A (Maximum)
Isolation Voltage	1500 VAC (Input to Output)
Protection	Short-Circuit Protection, Overload Protection
LED Indicators	Power OK, Output Active

Physical Dimensions & Weight

Accurate physical data supports proper cabinet layout and rack configuration. The ABB 07 KR 220 R2 maintains a compact footprint for efficient space utilization.

Dimensions (H x W x D): 125 mm x 50 mm x 125 mm
Weight: 0.28 kg
Origin: Made in Sweden / Finland (ABB EMEA Manufacturing Facilities)

Input Configuration and Power Source

The module draws its operating power directly from the 24 VDC system backplane. This eliminates the need for external wiring to supply the internal circuitry. A built-in DC-DC converter then generates the isolated output. Consequently, the input and output circuits remain electrically separate.

Output Characteristics and Field Power Delivery

This supply delivers 2 A of isolated 24 VDC power to external field devices. It connects directly to relay output modules for powering contact loads. The output handles multiple solenoids, contactors, or indicator lamps simultaneously. Users benefit from centralized power distribution for all relay circuits.

Isolation Architecture and Noise Rejection

The ABB 07 KR 220 R2 achieves 1500 VAC isolation between input and output sides. This separation prevents field wiring noise from affecting the control system. Inductive load switching transients therefore cannot disrupt processor operation. Industrial environments with heavy machinery benefit significantly from this protection.

Protection Features and Fault Handling

Integrated short-circuit protection immediately shuts down the output during fault conditions. Overload protection prevents damage from excessive current draw. The module automatically resets once the fault clears. This self-protecting design reduces downtime and simplifies troubleshooting.

Component Layout and Status Indication

A single PCB assembly houses all power conversion and protection components. Front-panel LEDs provide clear visual status for power presence and output activity. The green Power OK LED confirms proper input supply. Another LED illuminates when the isolated output actively delivers voltage.

Installation and System Integration

Mounting this module requires a compatible Advant OCS or S100 rack. It occupies a standard I/O slot within the system chassis. Connection to the backplane provides both power and mounting support. This integrated approach simplifies installation compared to external power supplies.

Thermal Performance and Environmental Ratings

The module operates reliably within a 0°C to +55°C ambient temperature range. Natural convection cooling handles all thermal dissipation requirements. No additional cooling fans or ventilation modifications are necessary. This passive thermal design contributes to long-term reliability.

Manufacturer Quality Standards

ABB manufactures the 07 KR 220 R2 under strict quality control protocols. Each unit undergoes comprehensive testing for output regulation and isolation integrity. Therefore, operators receive a product ready for immediate deployment. This commitment to quality aligns with industrial automation reliability expectations.