PowerPDU 4C | NETIO products: Smart power sockets controlled over LAN and WiFi

NETIO PowerPDU 4C is a small 110/230V PDU (Power Distribution Unit). Each of the four IEC-320 C13 outlets can be independently controlled (On / Off / Reset / Toggle). Electrical parameters (A, W, kWh, TPF, V, Hz) are measured with high accuracy at each outlet. The device features two LAN ports (and a built-in Ethernet switch) for connecting to a LAN. Each power output supports ZCS (Zero Current Switching) to protect the connected equipment.

Outputs can be controlled in the device web administration, using a mobile app or over various M2M API protocols (REST API, SNMP, MQTT, Modbus/TCP and more). Custom Lua scripts can run directly in the NETIO PowerPDU 4C. As a special feature, NETIO PowerPDU 4C provides a RS-232 serial port (green 3-pin terminal block) that can be controlled with a Lua script or used as a TCP tunnel (remote serial port).

 

M2M API: Open interface (13 protocols)

NETIO PowerPDU 4C is a smart PDU (Power Distribution Unit). With the support for many network protocols that can be used to control each power outlet individually and measure electricity consumption, the device is unique on the market.

Thanks to many supported M2M APIs, NETIO devices are easy to integrate into existing systems that consist of HW/SW from many different producers.

For example, NETIO PowerPDU 4C supports the following M2M APIs: XML, MQTT, SNMP v3, Telnet, Modbus, JSON, ... For each open M2M protocol, a detailed specification is available the Downloads section.

>> Glossary: 13 protocols

 

Security in M2M protocols (HTTPs / SSL)

NETIO PowerPDU 4C supports a high level of network security.

  • The HTTPs protocol secures the connection between the browser and the web server. As long as HTTPs is activated, the device administration as well as M2M protocols over HTTPs (URL-APIXMLJSON) are secured with SSL encryption.
  • The third SNMP v3 generation offers a better password protection in comparison to previous SNMP versions.
  • The MQTT protocol for IoT cloud applications includes SSL security.

 

Usecases for NETIO PowerPDU 4C:

  • In IT, the NETIO 4C smart PDU is typically used to distribute electricity in a 19" rack (cabinet) in a data center.
  • NETIO PowerPDU 4C is frequently used in conferencing rooms and in multimedia AV applications – whenever there is a need to individually control 110/230V electrical outlets from a master system (e.g. a control panel in the meeting room).
  • Typical applications also include energy metering for equipment monitoring (3D printer, lab equipment, ...)
  • In the area of Digital signage or AV multimedia, companies often use NETIO sockets to control multimedia screens and to monitor their functionality (using power measurements). NETIO supports the publishing of drivers for most common systems in this field.
  • Remote or autonomous restarting of equipment in monitoring centers or information stands – at places that must operate 24/7 without outages (airports, shopping malls, railway dispatching centers, call centers, ...)

>> NETIO usage examples

Power measurement

NETIO PowerPDU 4C is small PDU with power measurement and IEC-320 outputs

NETIO PowerPDU 4C measures electrical parameters separately for each output. Measured values are displayed in the web administration interface and accessible via M2M protocols. NETIO PowerPDU 4C measures with accuracy better than 1%.

  • 4x Current [A]
  • 4x Output power [W]
  • 4x Energy [Wh]
  • 4x TPF (True Power Factor)
  • Voltage [V]
  • Grid frequency [Hz]
  • Phase [-180 … 180°]

>> More about electrical measurements

Ask for a price or technical parameters

RS-232 serial port of NETIO 4C

NETIO PowerPDU 4C smart PDU controlled via RS-232 serial port

NETIO PowerPDU 4C provides a RS-232 serial port at its 3-pin green terminal block. The serial port can be used as a remote serial port (tunnel from a TCP connection to the serial port), or controlled with Lua scripts.

Lua scripts can send strings to this serial port and read any responses. This makes it easy to connect various industrial devices in order to, for example, react to a high temperature sensed by a RS-232 sensor by switching on a particular outlet.

>> More about RS-232

Lua – Programmable scripts

PowerPDU 4C is controllable over custom Lua script

PowerPDU 4C can run custom scripts written in the Lua language. The user enters the script in the device’s web administration interface. There is no need to install any additional software. The scripts run directly in the device and do not require any cloud connection.

User Lua scripts can:

  • Switch individual power outlets on/off (AN01)
  • Send e-mails
  • Read values or send commands over RS-232 (AN18)
  • Send and receive ICMP PING requests and replies (AN09, AN24, AN25)
  • Download and parse XML files from other devices (from a given IP address) – (AN13, AN14)
  • Communicate with other IP products using SNMP and Modbus/TCP as a client – M2M Active Client
  • Work with date and time (Scheduler / Calendar) (AN07, AN17)

The Application Notes (ANxx) page contains more examples of Lua scripts as well as practical tutorials for individual functions.

>> More information about NETIO Lua

 

Monitoring of network devices (IP WatchDog function)

The IP WatchDog function of NETIO PowerPDU 4C monitors PING (ICMP) responses

The IP WatchDog function of NETIO PowerPDU 4C monitors PING (ICMP) responses. The monitored device (router, IP video camera, …) can be easily restarted without human intervention. The function can be configured over the web interface.

Lua extensions of the IP WatchDog

As a unique feature of NETIO products, Lua scripts can be used to write more complex conditions for monitoring other devices. For example, the correct operation of other devices (heartbeat) can be checked by parsing XML files, loading web pages, and so on.

  • AN09: IP Watchdog 1 of 2 – PING based failure detection for 1 or 2 devices (Lua script).
  • AN24: IP WatchDog 1 to 1 – device LAN connectivity detection and indication (Lua script).
  • AN25: IP WatchDog 2 from 10 – list of monitored devices, failure indication by power output (Lua script).

>> Function IP Watchdog

PowerUp state

User can define output state after power restoring - PowerUp state

For some applications, it is important to set the correct state of a power output immediately after power is turned on (or restored). The “PowerUp state” parameter defines the behavior of the 110/230V outlets just after power is restored, before the standard communication with the master system is established.

  • On 
  • Off 
  • LAST state restores the last state before the power was disconnected

Delayed switch-on function ensures that the 110/230V power output is switched on with a configurable delay (several seconds) after the power is restored. This can avoid circuit breaker tripping when power is restored after an outage. 
 

>> PowerUp state

Built-in Ethernet switch

NETIO PowerPDU 4C includes two RJ45 ports for connecting to a LAN. The device includes a built-in (unmanaged) Ethernet switch. Several PowerPDU 4C units can be “daisy-chain” connected to a single RJ45 LAN socket; each PowerPDU 4C will have its own IP address. 

 


ZCS (Zero Current Switching)

An important feature of NETIO PowerPDU 4C is ZCS (Zero Current Switching). ZCS means that the control relay switches the IEC-320 C13 output power outlet on or off when the current crosses the zero level.

  • Thanks to ZCS, the device can control switching power supplies (servers, computers and other IT equipment) up to the maximum rated power.
  • Using ZCS (Zero Current Switching) to switch on the outputs reduces the chance of a circuit breaker tripping when power is restored after an outage.
  • Since the relay switches when the sinusoidal current curve crosses the zero level, negative effects of inrush current are significantly reduced.
  • ZCS significantly reduces EMC interference generated by connecting and disconnecting 230V appliances.
  • In the long term, ZCS reduces PowerPDU 4C failures due to internal relay damage.
  • ZCS extends the lifetime of connected equipment; especially in case of frequent on/off switching of devices that are not designed for that (such as switching power supplies).
  • When a load is switched several times per day, ZCS puts less stress on the connected equipment and saves maintenance costs (power supply replacements for frequently switched equipment).

>> More about ZCS

IOC (Independent Output Control)

NETIO PowerPDU 4C can be used for professional applications, such as powering servers. With servers in particular it is important to avoid momentary power switch-on or switch-off.

Output control is therefore completely independent from the LAN communication subsystem. The on/off status of an output outlet is not affected by any LAN disconnection, internal device reboot or firmware upgrade.

>> IOC (Independent power control)

Scheduler (timed switching of individual outlets)

The switching of outlets can be time-controlled by the Scheduler with a graphical interface. Switching on/off at specific times can be easily configured.

For more detailed settings, extensions of the Scheduler function using Lua scripts are also possible (AN07, AN17).

>> More information about Scheduler

General properties

Power

  • 110/230V power input
  • 4x IEC-320 C13 output
  • Individual metering at each output
  • Zero current switching (ZCS) at each output
  • Push-button control of each output
  • Defined power-up output state

Open API interface

  • WEB interface for configuring the product, HTTPs capable
  • Fully-documented M2M API (13 protocols)
  • RS-232 serial port controlled with a local Lua script
  • Online demo for testing

Unique features of PowerPDU 4C

  • Built-in Ethernet switch
  • No momentary output switching even during FW upgrade
  • Lua scripts running directly in the device
  • Scheduler function with a graphical interface
  • IP WatchDog function
  • Support for measurements with external sensors
  • Support for reading from / writing values to UPC using SNMP 

 

NETIO 4x product comparison

 

  Ethernet (LAN) WiFi Power Out Power measurement Serial port (RS-232) Lua scripty Bluetooth
External Ant. (RSMA) 4x DE (type F - Schuko)
4x FR (Type E)
-
Fixed Ant. 4x DE (type F - Schuko)
​4x FR (Type E)
- - -
  - 4x IEC320 C13 - -
 
NETIO PowerPDU 4C   - 4x IEC320 C13 -

 

 

Technical specifications

Power ratings

  • Supply voltage: 110/230 VAC / Max 10A
  • Low internal consumption: 2 to 5 W
  • Surge protection: Yes
    • Max energy 125J
    • Maximum applied voltage  300Vrms
    • Max. peak current  20/80us  4500A
    • Max. clamping voltage 775V

Power outputs

  • 4x IEC-320 C13 / Max 10A per output
  • PowerUp state: Yes – configurable default power-on state (On / Off / LAST)
  • ZCS (Zero Current Switching): Yes – configurable default state (On / Off / LAST)
  • IOC (Independent Output Control): Yes

Power measurement

  • 4x Current [A]
  • 4x Consumption [kWh]
  • 4x Output power [W]
  • 4x TPF (True Power Factor)
  • Frequency [Hz]
  • Voltage [V]
  • Phase [-180° to 180°]
  • Accuracy:  better than 1% (25°C)

Communication

  • 2x LAN 10/100 Mbps (RJ-45)
  • Built-in unmanaged Ethernet switch
  • RS-232 serial port (3 pins: Rx, Tx, GND)
  • USB: Only as a 5V / 1A supply output
  • Mobile app: NETIO Mobile
  • FW upgrade over the Web interface: Yes
  • Protocols: HTTP, HTTPS, SMTP, DNS, NTP, UPnP, DHCP, SNMP, ICMP, MQTT, SSL, Modbus/TCP

Controls

  • Main power switch
  • 4x button for individual sockets
  • LED indication of current outlet states
  • Sound indication: Yes

Open M2M API

Build-in functions

Lua scripting

  • Support for in-device Lua scripts: Yes
  • M2M Active Client: Yes
  • Lua access to RS-232: Yes

Operating conditions

  • Temperature: -20°C to +75°C
  • For indoor use only (IP30)

Package contents

  • NETIO PowerPDU 4C
  • QIG (printed Quick Installation Guide)
  • Power cable (Europlug C13 by default)

Miscellaneous

  • Warranty: 24 months
  • NETIO PowerPDU 4C: 220 x 40 x 120 (w x h x d)
  • Cable length: 1m
  • Weight: 0.8 Kg
  • Package: 325 x 74 x 224 mm (w x h x d)
  • Standards:
    • EN 61010-1 ed.2:2011
    • EN 61326-1 ed.2:2013
    • EN 55011 ed.3:2010
  • Designed and made in the Czech Republic

 

M2M API Interface

The NETIO PowerPDU 4C smart PDU devices support open API protocols for controlling outputs and measuring parameters.

URL API (HTTP GET, POST)  

A simple system for switching individual outlets on/off by accessing a URL. A REST-type protocol. 

SNMP (v1 / v3)

IT and Telco infrastructure management protocol. SNMP v3 is well-secured. 

XML (HTTP  / HTTPs)

Text files in XML format transferred over HTTP or secure HTTPs. A REST-type protocol. Bidirectional communication (http GET/POST).

 Modbus/TCP

Simple industrial M2M protocol for controlling NETIO 4x smart socket devices from various PLCs, SCADA systems etc. 

JSON (HTTP  / HTTPs)

Text files in JSON format transferred over HTTP or secure HTTPs. A REST-type protocol. Bidirectional communication (http GET/POST).

MQTT (generic / MS Azure)

Protocol for IoT (Internet of Things) cloud applications, with SSL security. The smart sockets device maintains a connection to the cloud application that can control it. 

Telnet (ssl)

Simple command-based protocol over a TCP connection.  The communication can be secured using SSL. This protocol is backwards-compatible with NETIO-230B (Kshell).

SIP (VoIP aplikace)

Telephony protocol; individual outlets can be controlled using an IP telephone in a way similar to opening doors.

>> M2M API interface

FAQ

Expand all

I have just unpacked the NETIO PowerPDU 4C unit, how do I configure it?

For the up-to-date procedure, please refer to the QIG (Quick Installation Guide) enclosed in the package.
Connect NETIO PowerPDU 4C to the Ethernet (LAN) and run the “NETIO Discover” utility (Windows or Java version). NETIO Discover finds the device and displays its IP address. When the IP address is clicked, the product web interface opens. The default login/password to access the device configuration is “admin”/“admin”.

 

I forgot my password. How do I reset NETIO PowerPDU 4C to factory defaults?

For the up-to-date procedure, see the product manual – look for “Forgotten password”. To restore factory defaults:
“To restore factory defaults, press and hold the buttons for outlets 1 and 2 and turn on the device. Keep the buttons pressed until the device beeps 3 times. While restoring factory defaults, all LEDs for the outlets flash red. As soon as the reset is finished, the device beeps twice.“

What does NETIO 4x mean?

NETIO 4x is the overall designation of NETIO 4 / 4C / 4All products.

What is a “tunnel” to the serial port?

In the settings, the 3-pin serial port can be connected to a specified TCP port. Then, on a computer, a Telnet connection to an IP:port can be established, and whatever you type into the terminal will be sent to the physical serial port. RS-232 speed and other parameters are configured in the WEB configuration interface of NETIO PowerPDU 4C.

How to mount NETIO PowerPDU 4C into a 19" rack?

NETIO provides a complete range of rack brackets.
 

What is the purpose of the USB connector at the PowerPDU 4C front panel?

This connector is for factory configuration only. The USB port can be used as a 5V / 1A supply to power RS-232 devices.

PowerPDU is without a load (no appliances connected to the outlets) but the web interface still shows 0.01 or 0.02 A.

This is correct, a small load may be drawn by the protective snubber at each output. This protection consumes about 2Wh / day.

Is NETIO PowerPDU 4C a smart PDU or a smart socket device?

The distinction is not entirely clear-cut but in general, PDUs are intended for 19" racks.  Also, the IEC 60320 C13 /C14 connectors are typical for the IT world.

Products with the wall-type 230V sockets (Type F (Schuko), Type E, ..) are usually called „smart sockets“.

Is it possible to control NETIO PowerPDU 4x outlets from a mobile app?

Yes, use the NETIO Mobile app. The mobile phone and all connected devices must be in the same network (mobile phone connected via WiFi). The app supports NETIO 4 / 4C / 4All and can control several smart socket devices. 

Can NETIO PowerPDU 4C switch an output on or off at a specified time?

Yes, the on/off timing of individual outputs can be configured in the “Scheduler” graphical interface.

Another option is to write a Lua script (AN07 or AN17) to switch the electrical outputs at specified dates and times.

Is it possible to control NETIO using an IoT cloud?

Yes, NETIO 4x (4 / 4All / 4C) supports the MQTT protocol (generic MQTT / MS Azure – IOT central) for connecting to IoT (Internet of Things) cloud applications.

Does NETIO 4x support daylight savings time?

Yes, all NETIO 4x products contain a Scheduler that switches the outputs on and off at the times specified in hours and minutes. The time is synchronized automatically according to the selected timezone. Daylight savings time is set automatically and cannot be disabled.

You frequently mention that NETIO 4 smart outlets support SNMP v3. Does it mean that SNMP v1 version is not supported?

SNMP v3 is an extension of SNMP version 1. SNMP version 1 can be only used to read the status of NETIO products. To switch individual sockets, the more secure SNMP v3 must be used.
We recommend always using SNMP v3 (uses SSL security).

Is it possible to switch on/off a PowerPDU 4C output with a command over the RS-232 serial port?

Yes, but only with a Lua script. For an example, see “AN18 Lua access to RS-232 serial port”. The AN contains sample command formats; however, you can also define your own commands to switch each output on or off.

Download

Flyer: 
Manual: 
Manual CS
Manual EN
Manual DE
Manual RU
Quick Installation Guide: 

Photo and video

Product comparison

  LAN (RJ45) WiFi IQRF

Power
Outputs

Smart switching 
ZCS / ZVS

Power
measurement

Web-based
configuration

Serial port
(RS-232)

Lua scripts
(programmable)

M2M APIs
Yes
Ext. - 4 - 22 values Yes - Yes 13 protocols
Yes Ext. - 4 - - Yes - Yes 13 protocols
2x - - 4 ZCS 22 values Yes Yes Yes 13 protocols

PowerCable Modbus

- Int. - 1 ZCS 6 values Yes - - Modbus/TCP
PowerCable REST
(comming soon)
- Int. - 1 ZCS 6 values Yes - - XML, JSON, URL API
PowerCable IQRF - - Int. 1 ZCS 6 values - - - IQRF

 

Available models

PowerPDU 4C CH
LAN PDU (Power Distribution Unit) rated at 110/230V, energy metering, 4x IEC-320 C13 power output. 2x LAN interface, RS-232. Swiss power cable.
PowerPDU 4C Europlug
LAN PDU (Power Distribution Unit) rated at 110/230V, energy metering, 4x IEC-320 C13 power output. 2x LAN interface, RS-232. Europlug power cable.
NETIO 4C can be installed with the 110/230V supply connectors at the front or at the back
NETIO RM1 4C
Metal brackets to install one NETIO 4C device into a 1U space in a 19” rack frame.
Metal brackets to install two NETIO 4C devices into a 1U space in a 19” rack frame.
NETIO RM2 2x4C

Metal brackets to install two NETIO 4C devices into a 1U space in a 19” rack frame.

Metal brackets to fasten one NETIO 4C device to a vertical bar in a rack frame.
NETIO RM3 4C vertical
Metal brackets to fasten one NETIO 4C device to a vertical bar in a rack frame.
Universal metal brackets to fasten one NETIO 4C device e.g. to horizontal bars in a rack frame.
NETIO RM4 4C universal
Universal metal brackets to fasten one NETIO 4C device e.g. to horizontal bars in a rack frame.
PWR adapter UNI to IEC-320

Adapter connecting many types of electrical plugs to NETIO 230C/CS. EU, UK, U.S., AU, Schuko , Switzerland and Italy plugs may be used. 

NETIO smart power sockets

 

Ethernet: 
10/100Mbit
Lan ports: 
0
LAN ethernet switch: 
Yes
WiFi: 
Yes
WiFi AP mode: 
Yes
Blue Tooth 4.0 LE: 
Yes
Serial port (RS-232): 
No
DHCP: 
Yes
SNTP: 
Yes
SMTP (TLS): 
Yes
SSL: 
Yes
IPv6: 
Yes
VLAN: 
Yes
Syslog: 
Yes
SMS Alerts: 
Yes
Email alerts: 
Yes
Mobile App: 
No
Scheduler (Chytrý kalendář): 
Yes
IP Watchdog Hearbeat): 
No
Warranty 2: 
6 Months
Protection 2: 
IP30
Rack montage: 
None
Product dimensions: 
340 x 58 x 90 mm
Product weight: 
1,18 Kg
Shipping package: 
420 x 65 x 130 / 1350 g
HTTP: 
Yes
HTTPs: 
Yes
SNMP v1: 
Yes
SNMP v3: 
Yes
User certificates: 
Yes
XML: 
Yes
Modbus/TCP: 
Yes
Telnet/Kshell: 
Yes
CGI: 
Yes
MS Azure (MQTT): 
Yes
SIP VoIP: 
Yes
Power Output: 
4x DE (Type F - Schuko)
Power Input: 
230V AC
Power Output sockets: 
1
Power Input: 
Europlug - cable 1m
Power In max current: 
10A
Max one socket current: 
8A
Power fuse: 
External, mechanical
Current meter: 
No
Metered values: 
None
Energy meter: 
No
LUA: 
Yes
XML interface accessible in LUA: 
Yes
SNMP interface accessible in LUA: 
Yes
Web buttons accessible in LUA: 
Yes
CGI interface accessible in LUA: 
Yes
PING interface accessible in LUA: 
Yes
RS-232 accessible in LUA: 
No
Declarations: 
NETIO 4x CE
Online demo IP address: 
http://netio-4c.netio-products.com/
Symbol: 
Show download for mobile: 
1

Ask for a price or technical parameters

For device testing use name/password demo/demo