SEL-2440 Discrete Programmable Automation Controller
The SEL-2440 Discrete Programmable Automation Controller (DPAC) is designed to withstand harsh physical and electrical environments and is built and tested to meet mission-critical IEEE and IEC protective relay standards. It is suitable for stand-alone or distributed input, output, and communications needs.
Product Summary
The SEL-2440 DPAC offers a robust solution for control and monitoring applications. It features a compact design with extensive I/O capabilities, flexible communication options, and powerful automation features, making it ideal for integration into SCADA systems and other automation architectures.
Functional Diagram
The functional diagram illustrates the internal architecture of the DPAC, including input processing, programmable automation engine, sequential events recorder, and output relays. It highlights the microsecond timing capabilities and 2 ms processing interval.
I/O Quantity Options
| Configuration | Inputs | Outputs |
|---|---|---|
| Standard | 32 | 16 |
| Option 1 | 16 | 32 |
| Option 2 | 48 | 0 |
| Option 3 | 16 | 32 (16 Standard and 16 High-Current Interrupting) |
| Option 4 | 16 | 26 (12 Form A, 4 Form C, 10 Fast High-Current Form A) |
| Option 5 | 16 | 10 (10 Fast High-Current Form A) |
I/O Input Voltage Options
| Digital Input Rating |
|---|
| 24 Vac/Vdc |
| 48 Vac/Vdc |
| 110 Vac/Vdc |
| 125 Vac/Vdc |
| 220 Vac/Vdc |
| 250 Vac/Vdc |
Major Features and Benefits
Fast and Powerful I/O
- Exceptional and compact combination of inputs, outputs, and communications.
- Microsecond timing for system events.
- Synchronization with IRIG-B time for outputs.
- 2 ms processing interval for quick actions.
- Programmable logic, latches, timers, counters, edge-triggers, and math functions.
- Safe operation with logic-programmed inputs for local/remote control.
Convenient Maintenance and Support
- LEDs provide status for every I/O point and communications port.
- Removable terminal blocks for quick installation and replacement.
- Positive retention connectors to prevent lost connections.
- Front-panel management port for convenient device management.
Flexible Communications and Integration
- Supports DNP3, Modbus®, and IEC 61850 protocols over Ethernet and serial connections.
- Direct and select-before-operate (SBO) outputs are supported.
- Easy integration with SCADA systems.
- Configuration via DIP switches or ACSELERATOR® QuickSet® SEL-5030 Software.
SEL Quality, Standards, and Global Support
- Designed and tested for harsh physical and electrical environments.
- Designed to operate with dc grounded batteries and capacitive loads.
- Trips breakers and interrupts inductive loads.
- Superior specification compliance, high reliability, and a ten-year warranty.
Configuration
- Easy Mode: Set address and communications parameters with DIP switches.
- Flexible Mode: Access additional flexibility using QuickSet software.
Communication and Time
The DPAC supports multiple communication ports and protocols, including Ethernet and serial connections. Time synchronization is achieved via IRIG-B or SNTP.Figure 3 Rear-Panel Communications and IRIG-B Ports
| Port | Port Interface |
|---|---|
| PORT F | USB 2.0 physical interface, serial port (e.g., COM1) software interface |
| PORT 1 | Ethernet with switch/failover (copper or fiber) |
| PORT 2 | Serial (EIA-232, EIA-485, or ST fiber) |
| PORT 3 | Serial (EIA-232) |
| Protocol | Serial | Ethernet |
|---|---|---|
| DNP3 | Yes | Yes |
| Modbus | Yes | Yes |
| IEC 61850 | Yes | Yes |
| MIRRORED BITS® | Yes | Yes |
| SEL Fast Message | Yes | Yes |
Inputs/Outputs
DPAC devices can be ordered with different I/O and input voltage ratings.
Figure 4 Independent and Isolated Inputs
Figure 5 Bussed Inputs
Figure 6 Secure Against DC Grounds
Figure 7 Secure Against Capacitive Discharges
Figure 8 Independent and Isolated Outputs
SEL inputs are designed and tested for dc battery grounds and capacitive discharges. SEL outputs are rated for 30 A make and inductive interrupt applications.
Power
The POWER terminals on the rear panel connect to 120–230 Vac or 24–250 Vdc. These terminals are isolated from chassis ground, and extra terminals are provided for daisy-chaining power.
Diagram showing power connections
IRIG-B
A demodulated IRIG-B input and output are provided for daisy-chaining between DPAC devices.Diagram showing IRIG-B signal flow
Connectors
Removable terminal block connectors ensure quick and efficient installation and replacement. Retention screws secure connections.Diagram of pluggable connectors with retention screws
Conformal Coating
An optional conformal coating protects the DPAC printed circuit board from moisture and corrosive elements in harsh installations, conforming to Mil-1-46058C Type UR requirements.
Communications Ports
The DPAC offers a comprehensive set of communications ports and protocols for various integration needs.Figure 13 Typical Ethernet and EIA-485 Communications Architectures
Figure 14 Typical EIA-232 and Fiber-Optic Communications Architecture
Additional Ordering Options
Various options are available for the SEL-2440, including physical interface for Port 2 and mounting options.
| Port 2 Physical Interface | Mounting |
|---|---|
| EIA-232 | Rack |
| EIA-485 | Panel |
| ST fiber | Surface |
Front- and Rear-Panel Diagrams
Detailed diagrams illustrate the rack-mount, panel-mount, and surface-mount configurations, along with rear-panel layouts for different I/O options.
Figure 15 Rack-Mount Drawing
Figure 16 Panel-Mount Drawing
Figure 17 Surface-Mount Drawings
Figure 18 32 Input, 16 Output Rear-Panel Drawing
Figure 19 High-Current Interrupting Option Rear-Panel Drawing
Figure 20 Port 2 EIA-485 and Fiber-Optic Ethernet Option Rear-Panel Drawing
Figure 21 48DI Option Rear-Panel Drawing
Figure 22 16 Input, 16 Standard Output, and 10 Fast High-Current Output Rear-Panel Drawing
Figure 23 32 Input and 10 Fast High-Current Output Rear-Panel Drawing
Dimensions
Detailed dimensional drawings are provided for rack-mount, panel-mount, and surface-mount chassis.Rack-Mount Chassis Dimensions
Panel-Mount Chassis Dimensions
Surface-Mount Chassis Dimensions
Specifications
Compliance
- Designed and manufactured under an ISO 9001 certified quality management system.
- UL Listed to U.S. and Canadian safety standards (File E220228; NRAQ, NRAQ7).
- CE Mark.
- RCM Mark.
General
- Operating Temperature Range: -40° to +85°C (-40° to +185°F).
- Conformal Coated: Derate operating temperature by 10°C.
- Operating Environment: Pollution Degree 2, Overvoltage Category II, Insulation Class I, Relative Humidity 5%-95% noncondensing, Maximum Altitude 2000 m.
- Weight: 2.0 kg (4.4 lb).
Inputs
- Optoisolated Control Inputs: Specifications for DC and AC control signals are provided, including ON/OFF voltage ranges.
- Current Draw at Nominal DC Voltage: 2-4 mA (except for 24 V, 8 mA).
Outputs
- Mechanical Durability: 10 M no-load operations.
- DC Output Ratings (Standard Output Option): Rated operational voltage, voltage range, insulation voltage, frequency, utilization category, contact rating, contact protection, continuous carry, thermal derating, and operating time are detailed.
- Fast High-Current Interrupting Output Option: Specifications for DC and AC outputs, including rated operational voltage, voltage range, insulation voltage, frequency, make, continuous carry, thermal derating, contact protection, and operating time are provided.
Time-Code Input (Demodulated IRIG-B)
Details on ON/OFF states, input impedance, and accuracy for IRIG-B time code input.
Time-Code Input (SNTP)
Accuracy specifications for high-priority and low-priority SNTP servers.
Time-Code Output (Demodulated IRIG-B)
Details on ON/OFF states and load for IRIG-B time code output.
Communications Ports
- USB 2.0 Port: PORT F (front-panel).
- Ethernet Ports: PORT 1A, 1B (rear-panel 10/100BASE-T or 100BASE-FX).
- Optional Port: PORT 2 (rear-panel, 300-115200 bps) available as EIA-232, EIA-485, or ST fiber, with IRIG-B.
- EIA-232 Port: PORT 3 (rear-panel, 300-115200 bps) with IRIG-B.
Fiber-Optic Ports Characteristics
- Wavelength: 1300 nm.
- Data Rate: 100 Mbps.
- Optical Connector Type: LC.
- Fiber Type: Multimode.
Product Standards
- UL 508:2018, IEC 61010-1:2013, C22.2 No. 61010-1:12, IEC 61010-2-201:2013, UL 61010-2-201:2017, C22.2 No. 61010-2-201:14.
- Measuring Relays and Protection Equipment: IEC 60255-26:2013, IEC 60255-27:2013.
Type Tests
Information on EMI/EMC performance, including recommendations for shielded cables and input timing settings.
Environmental Tests
- Enclosure Protection: IEC 60529:1989 + A1:1999 + A2:2013 (IP4X Front, IP2X Product).
- Vibration Endurance, Response, Shock Withstand, Bump Withstand, Seismic Response, Cold, Damp Heat, Dry Heat: Compliance with relevant IEC standards.
Power Interruption Tests
- AC Power: IEC 61000-4-11:2004.
- DC Power: IEC 61000-4-29:2001.
Dielectric Strength and Impulse Tests
- Dielectric (HiPot): IEC 60255-27:2013, IEEE C37.90-2005.
- Impulse: IEC 60255-27:2013.
RFI and Interference Tests
- EMC Immunity: Electrostatic Discharge Immunity, Radiated RF Immunity, Fast Transient, Burst Immunity compliance with IEC and IEEE standards.
EMC Emissions
- Conducted and Radiated Severity Level: Class A compliance with EN, CISPR, and ANSI standards.
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