UMG 96RM-PN
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UMG 96RM-PN
The UMG 96RM-PN power analyzer is used to determine the voltage quality and measures harmonics up to the 40th harmonic. It has two digital outputs as well as three further digital inputs or outputs, which can be determined optionally. In addition, two further inputs are included (analog, temperature or residual current input (RCM)).
6 current channels
- Current measurement channel for phase L1
- Current measurement channel for phase L2
- Current measurement channel for phase L3
- Current measurement channel for neutral conductor
- 2 x RCM (optional thermistor input)
Interfaces
- 2 Ethernet interfaces that conform to PROFINET and integrated switch to set up line topologies
- Additional RS485 interface
- 2 digital outputs (pulse output, switch output, threshold value output, logic output)
- 3 additional digital inputs/outputs
REST interface
- Software interface to query measured values via an HTTP protocol, e.g. to include the measured data in higher-level software solutions (GLT, PLC, SCADA, etc.)
- Machine-machine communication thanks to a simple architecture model
RCM (residual current)
- Fire and device protection
- System safety
- Fulfillment of regulations
- Identifying insulation faults
- Safeguarding system availability
Web server
- Real-time display of current power / current and voltage values on the device homepage
- Device homepage can be called in the browser at any time
- Online measured values display
Gridvis®-Basic
- Visualisation and evaluation of the measured values
- Simple report creation
- Setting up energy management systems in accordance with ISO 50001
Communication from the machine to the web
To bring Ethernet from the office to the system field requires a number of enhancements; the most important is real-time capability. Depending on the application, a marketable industrial Ethernet must handle safety applications or the entire range of drive technology, right up to synchronous motion control with cycle times of less than a millisecond.
You can achieve this using a clever distribution of protocols via the OSI layered system structure. This results in many solutions. One of the most common is the open standard, PROFINET, which also provides a great deal of investment protection. Existing field bus systems such as Profibus DP, Profibus PA, AS interface and interbus can be included in the existing field devices without the need to make changes.
PROFINET already saves costs during installation, engineering and commissioning. The operator later benefits from its ease of extension and high availability thanks to subsystems that run autonomously. Accordingly, PROFINET is represented in all applications in machinery and system construction: In the automotive industry, the paper industry, plastics processing, conveyance technology, the food industry and process engineering.
It is obvious that this communication structure can also be used for capturing machine-oriented energy data. Janitza has used the tried and tested UMG 96 range of devices as a basis to develop a PROFINET specialist: The UMG 96RM-PN – a measuring device that is much more than a standard version with a flange-mounted PROFINET interface.
The UMG 96RM-PN is equipped with two Ethernet interfaces that conform to PROFINET IO-IRT and an integrated switch. The familiar line topologies are used to display the structure of the field bus technology in a way that complies with standards. Parameters can be set and configuration carried out completely in the Step 7® environment or the TIA portal. All measured values are displayed directly in the PLC's process data channel. Its digital inputs and outputs can be used via both Modbus and PROFINET. Two analogue inputs are available for 0-30 mA or to capture temperatures. A separate 5A current measurement channel can monitor the neutral conductor, for example.
All relevant measurements can be displayed on the device's own homepage. A REST interface enables measured values and configuration parameters to be queried from the HTTP interface. A highlight is integrated residual current monitoring (RCM), which can be used to detect insulation faults at an early stage.This increases the system availability and reduces the risk of fire.
The energy management system can be implemented easily based on this infrastructure. PROFINET can be used to feed the data captured in real-time to a centralised location, to save it centrally in databases and to make it available for further processing in an architecture that is as open as possible.
Janitza has the relevant solutions ready – from self- sufficient software to the cloud. The users can, therefore, implement their own independent energy management or revert to the service range from Janitza.
The UMG 96RM-PN does not just enable continuous capture of consumers, but also enables residual current monitoring (RCM). RCM can be used to detect faults, which would only be partially perceived – or even entirely missed – by a single system. The user is therefore able to react before fuses or residual current devices (RCD) switch off affected systems or socket power circuits. This applies in particular to quietly rising residual currents (e.g. triggered by an insulation fault), overly high operating currents and any other overloading of system parts and consumers.
However, RCM can do even more: namely reduce the risk of fire. With a sufficiently high current flow (with a dead earth short or corresponding low-resistance short) the upstream protective device disconnects the electrical consumers from the mains. However, if the residual current is too low then the protective device will not trigger. If the recorded fault power exceeds a value of approx. 60 Watt (approx. 261 mA at 230 V), there is still a risk of fire.
By setting parameters (i.e. stipulating the typical residual current in "GOOD" condition) for the system in new condition and constant monitoring, all changes to the system state after the point of start-up can be detected. This also enables visualising creeping residual currents.
Therefore, RCM in the UMG 96RM-PN does not just increase the system availability, but also reduces the risk of fire.
| Rated voltage [V] | L-N: 277 V AC, L-L: 480 V AC |
|---|---|
| Power voltage [V] | 24 - 90 V AC, 24 - 90 V DC |
| Accuracy class | 0,5S (kWh,.../5 A) / 1 (kWh,.../1 A) |
| Width [mm] | 96 |
| Height [mm] | 96 |
| Depth [mm] | 78 |
| Weight in [g] | 400 |
| Software | GridVis - Basic |
| Communication interface | RS-485, Ethernet, Webserver |
| Protocols | Modbus TCP/IP, Modbus RTU over Ethernet, SNMP |
| Overvoltage category | 300 V CAT III |
| Distortion factor THD-U, THD-I | YES |
| Connection (L-N, L-L) | 3 / 4 - conductive |
| Measurement type | 4-quadrant |
| Current measurement channels | (2) can be combined: analog / temperature / residual current. |
| Digital inputs | (5) - Can be combined with inputs |
| Digital / pulse output | 4+2 |
| Sampling frequency 50/60 Hz | 21,33 / 25,6 kHz |
| Number of measurement records per second | 21.330 / 25.600 |
| Number of measuring results per second | 5 |
| Transients | NO |
| Flicker measurement | NO |
| Clock | NO |
| Accuracy V/A | 0,2 % / 0,2 % |
| Integrated logic | 3 - Lze kombinovat s výstupy |
| Number of stored values in memory | NE |
| Weekly timer | NE |
| Uninterruptible measurement | YES |
| Short-term event outages (recording) | NE |
| Measuring asymmetry | NO |
| Residual current measurement | YES |
| Recording of error events | NE |
| Consecutive / backward / null component | ANO |
| Bi-metallic function | ANO |
| Operating hours counter | ANO |
| Input for temperature measurement | Komparátory |
| RMS value of periods (50/60 Hz) | 10/12 |