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Rockwell 1420 PowerMonitor 500

The Rockwell Bulletin 1420 PowerMonitor™ 500 is a compact power meter designed for reliable monitoring of voltage, current, power, and energy in industrial installations. The device provides real-time measurements through four voltage and four current channels, continuously calculating critical electrical parameters. With its built-in LCD display and simple configuration, it is quick to deploy. The PowerMonitor 500 supports Modbus and EtherNet/IP™ for integration into SCADA and control systems and, depending on the model, offers digital and analog outputs. It is ideal for submetering, energy management, and optimizing energy efficiency.
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What is it?

The Rockwell PowerMonitor™ 500 (Bulletin 1420) is a compact and user-friendly energy meter designed to accurately measure and monitor electrical energy in industrial installations. With its integrated LCD display, operators gain immediate insight into voltage, current, power, energy, and power factor without the need for external interfaces. The device supports communication via EtherNet/IP™ and Modbus, making it easy to integrate into existing SCADA and energy management systems. The PowerMonitor 500 is widely used for energy sub-metering, real-time monitoring, and cost control, as it provides detailed consumption data per installation segment and helps identify opportunities for energy savings.

How does it work?

The device continuously measures the electrical parameters of the connected system and calculates key values such as energy, power, and power factor. These measurements are displayed locally and can be transmitted via communication ports for further analysis and reporting. The PowerMonitor 500 also features configurable alarms to quickly detect abnormalities such as overvoltage or overload. With multiple digital inputs and outputs, it easily interfaces with other systems, making it an ideal solution for industrial energy management applications.

What problems does it solve?

Invisible energy consumption and inefficient use of electrical installations can lead to unnecessary costs and equipment wear. The PowerMonitor 500 addresses these issues by providing real-time visibility into energy usage, allowing inefficiencies to be quickly identified and energy costs reduced. It protects equipment by detecting anomalies early, supports sustainability goals by enabling energy reduction programs, and contributes to better control over both energy use and maintenance strategies.

Product Catalog and Models

Catalog Number & Description
1420-V1 PowerMonitor 500 Power Meter Indicator, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL
1420-V1P PowerMonitor 500 Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL, Pulse Output (digital)
1420-V1A PowerMonitor 500 Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL, Analog Output
1420-V1-ENT PowerMonitor 500 EtherNet/IP Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL
1420-V1P-485 PowerMonitor 500 Serial Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL, Pulse Output
1420-V1P-ENT PowerMonitor 500 EtherNet/IP Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL, Pulse Output
1420-V1A-ENT PowerMonitor 500 EtherNet/IP Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL, Analog Output
1420-V1A-485 PowerMonitor 500 Serial Power Meter, 240V AC V-LL, 120V AC V-LN / 208V AC V-LL, Analog Output
1420-V2 PowerMonitor 500 Power Meter Indicator, 400V AC V-LN and 690V AC V-LL
1420-V2P PowerMonitor 500 Power Meter, 400V AC V-LN and 690V AC V-LL, Pulse Output
1420-V2A PowerMonitor 500 Power Meter, 400V AC V-LN and 690V AC V-LL, Analog Output
1420-V2-ENT PowerMonitor 500 EtherNet/IP Power Meter, 400V AC V-LN and 690V AC V-LL
1420-V2-485 PowerMonitor 500 Serial Power Meter, 400V AC V-LN and 690V AC V-LL
1420-V2P-ENT PowerMonitor 500 EtherNet/IP Power Meter, 400V AC V-LN and 690V AC V-LL, Pulse Output
1420-V2P-485 PowerMonitor 500 Serial Power Meter, 400V AC V-LN and 690V AC V-LL, Pulse Output
1420-V2A-ENT PowerMonitor 500 EtherNet/IP Power Meter, 400V AC V-LN and 690V AC V-LL, Analog Output
1420-V2A-485 PowerMonitor 500 Serial Power Meter, 400V AC V-LN and 690V AC V-LL, Analog Output

General Specifications

  • Operating temperature: -25°C to 55°C (non-condensing, 90% RH at 40°C)

  • Storage temperature: -30°C to 70°C (non-condensing, <90% RH at 40°C)

  • Installation category: Cat. III (according to IEC60664, EN60664)

  • Dielectric strength: 4 kV AC RMS for 1 minute

  • Noise rejection: CMRR 100 dB, 48–62 Hz

  • Standards compliance: IEC60664, IEC61010-1, EN60664, EN61010-1, EN62052, EN62053-21, EN62053-23, EN50470-3, MID ‘annex MI-003’

  • Pulse output: DIN43864, IEC62053-31

  • Certifications: CE, cULus (E56639)

  • Dimensions:

    • Module holder: 96 x 96 x 50 mm

    • ‘A’ and ‘B’ type modules: 89.5 x 63 x 16 mm

    • ‘C’ type module: 89.5 x 63 x 20 mm

  • Material: ABS, self-extinguishing UL 94 V-0

  • Mounting: Panel mount

  • Protection rating:

    • Front: IP65, NEMA 4X, NEMA 12

    • Screw terminals: IP20

  • Weight: approx. 400 g (including packaging)

Input and Output Specifications

  • Power supply: 90 to 260 V AC/DC (48 to 62 Hz)

  • Voltage sensor inputs (V1, V2, V3):

    • V1: 40–144 V LN (70–250 V LL)

    • V2: 160–480 V LN (277–830 V LL)

  • Current sensor inputs (I1, I2, I3):

    • Continuous current: 5 A

    • Max current: 6 A

  • Current accuracy:

    • From 0.01 to 0.05 In: ±(1.0% reading + 2 digits)

    • From 0.05 In to max: ±(0.5% reading + 2 digits)

  • Digital output:

    • Relay, SPDT type

    • AC 1-5 A @ 250 V AC

    • AC15 1.5 A @ 250 V AC

    • DC 12-5 A @ 24 V DC

    • DC 13-1.5 A @ 24 V DC

  • Analog output: 0 to 20 mA

Display, LEDs, and Operation

  • Display refresh time: ≤ 100 ms

  • Display: 4 lines, 4-digit + 1 line, 10-digit LCD with single color backlight

  • Instantaneous variables readout: 4-digit

  • Energy variables readout: imported total/partial: 9+1 digit or 10 digits; exported total/partial: 9+1 digit (with ‘-’ sign)

  • Virtual alarms: 4 red LEDs available for alarms (AL1 to AL4)

  • Energy consumption indicator: red LED (kWh only)

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