Question 1

What are the core operating power range, power consumption, and communication protocol specifications of the Eltek Smartpack R (SKU: ELTEK-CTRL-SMARTPACK-R)?

Accepted Answer

The Eltek Smartpack R features a 1U 19-inch rack-mount drawer enclosure (44 × 482 × 250 mm) operating across a wide input range of 18 to 75 VDC, natively engineered for -48V as well as 24V/60V telecom DC power plants, with a low typical power consumption of under 5.5W. Equipped with a high-contrast graphical LCD display, it utilizes a multi-drop CAN-bus internal network capable of managing dozens of rectifiers and auxiliary I/O nodes. External networking is delivered via 10/100M Ethernet and RS-232/485 interfaces supporting SNMPv1/v2c/v3, Modbus RTU/TCP, HTTPS, and Telnet, maintaining analog telemetry precision within ±0.5% for real-time SCADA and NOC telemetry integration.

Question 2

Which rectifier platforms are supported by the Smartpack R in large-scale cabinets, and how is its bus expansion and mixed-module load sharing implemented?

Accepted Answer

The Smartpack R offers native firmware-level compatibility with Eltek Flatpack2 and Minipack modular rectifier families, enabling seamless co-existence and orchestration of standard efficiency and High Efficiency (HE) modules in the same system. Communication is maintained over dual-isolated CAN-bus distributing voltage references and dynamic current-limit baselines, delivering autonomous active load sharing with imbalances under 3%. The 1U drawer architecture supports live hot-swap replacement without interrupting the live DC bus, and easily cascades with external Smartnode modules to scale programmable dry contact relays and digital inputs for enterprise-tier telecom expansion.

Question 3

What battery management and environmental reliability mechanisms are engineered into the Smartpack R controller?

Accepted Answer

For battery lifecycle optimization, the Smartpack R features precision temperature-compensated charging, online capacity/impedance estimation, automated float/boost routines, battery symmetry monitoring, and configurable dual Low Voltage Disconnect (LVD for non-critical load and battery protection to prevent deep discharge). Environmentally, it operates reliably from -40°C to +65°C (storage -40°C to +85°C) across 5% to 95% RH non-condensing. The internal PCB is conformal-coated to resist humidity and dust, meeting stringent EMC directives (EN 61000-6-1/2/3/4 and NEBS Level 3 compliance) with a calculated MTBF exceeding 350,000 hours in demanding industrial substation environments.

Key specifications	Value
System Output Capacity	Multifunctional Industrial Rack-Mount Power Controller A
Nominal Output Voltage	Dedicated for -48V DC
Output Voltage Range	RS485 (Standard Modbus-RTU) + Dry Contact Alarm VDC
AC Input Voltage Range	Internal DC power supply 18 ~ 75 VDC VAC
Rectifier Module Slots	1U drawer-type rack-panel installation Slots
System Monitoring Controller	Smartpack R drawer-type control unit
System Comprehensive Efficiency	Supports SNMPv3 / Modbus industrial protocols %
Physical Dimensions Spec	44 × 482 × 250 mm (1U 19-inch)
Operating Temperature	-40°C to +65°C

Eltek Smartpack R 1U Rackmount Digital Supervisory Controller

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

Central office telecom power systems

Enterprise colocation facility DC monitoring

Field service controller replacements

Frequently asked questions

Continue exploring

Eltek 268035 Flatpack2 4AC 4-Slot Subrack DC Power System

Eltek Compact CT0S Embedded Telecom DC Power System Subrack -48V 100A/150A

Eltek Smartpack S Digital Controller (Part No. 242100.120)

Eltek 252189 Subrack Telecom DC Power System (-48V 4-Slot Flatpack2)