Page 1 Modular Power Analyzer REM 801 User manual and technical data RITTAL GmbH & Co. KG Auf dem Stuetzelberg D-35745 Herborn • Germany Phone +49 (0)2772-505-0 info@rittal.com | www.rittal.com...
Page 2 The German version is the original edition of the documentation INFORMATION The content of this document reflects the measurement device firmware version 1.5.0, which was current at the time of cre- ation. Check for the presently current version (www.rittal.com) and keep the measurement device firmware up to date!
Page 3 Nonetheless, we wish to point out that updates of this document are not always possible at the same time as technical refinements are implemented in our products. Please see our website under www.rittal.com for the current version. Please see our website under www.rittal.com for the current version.
Page 4: Table Of Contents
REM 801 www.rittal.com Table of content 1. Information on the device and the user manual Disclaimer Copyright notice Technical changes About this user manual Defective device/disposal 2. Safety Display of warning notices and safety information Hazard levels Product safety Dangers when handling the device...
Page 5 REM 801 4. Structure of the device Front panel and display Side views (device without terminals) Bottom view (device without terminals) Identification of the device (rating plate) 5. Mounting Installation location Bus connector DIN rail mounting of the device 6. Grid systems 7.
Page 6 REM 801 www.rittal.com Residual current measurement - limit value calculation 7.8.1 Static limit value calculation 7.8.2 Dynamic limit value calculation 7.8.3 Stepwise limit value calculation 7.8.4 Example: Residual current limit value exceeded 7.8.5 Activating cable break detection (failure monitoring) RCM for the multifunction channels.
Page 7 REM 801 11. Configuration 11.1 The Configuration window 11.2 Configuring Ethernet (TCP/IP) 11.2.1 Communication via TCP/IP 11.2.2 Communication via OPC UA 11.3 Configuring the fieldbus (RS-485 interface) 11.3.1 Communication settings 11.4 Configuring current transformers 11.5 Configuring voltage transformers 11.6 Temperature measurement configuration 11.7...
Page 8 REM 801 www.rittal.com 12. Digital inputs and outputs 12.1 4 digital inputs 12.2 4 digital outputs 12.3 Comparator 13. Analog outputs 14. Commissioning 14.1 Supply voltage 14.2 Measured voltage 14.3 Measured current 14.4 Frequency measurement 14.5 Direction of rotary field 14.6 Fundamentals on the phasor diagram 14.7...
Page 9 REM 801 18. Device homepage 18.1 "Home" start page 18.1.1 Login 18.1.2 Change password 18.2 "Measured values" menu bar item 18.2.1 Details 18.2.2 Events and transients 18.3 "Settings" menu bar item 18.3.1 Firmware update 18.3.2 Whitelist (Modbus port 502) 18.4 "Information"...
Page 10 REM 801 www.rittal.com 22. Dimensional drawings 22.1 Basic device REM 801 22.2 Bus connector...
Page 11 REM 801...
Page 12: Information On The Device And The User Manual
Copyright notice ed modules and components of your meter and module topology (e.g. current transformers). © 2024 - RITTAL GmbH & Co. KG - Herborn. All rights reserved. The illustrations and figures in this user manual may Any reproduction, processing, distribution or other...
Page 13: Defective Device/Disposal
REM 801 Defective device/disposal Before sending defective devices, modules or components back to the manufacturer for testing: · Contact the manufacturer's Support department. · Send devices, modules or components complete with all accessories. · When doing so, please bear the terms for transpor- tation in mind.
Page 14: Safety
REM 801 www.rittal.com Safety The chapter on Safety contains information which Product safety must be observed to ensure your personal safety The devices, components and modules reflect and avoid material damage. current engineering practice and accepted safety standards, but hazards can arise nonetheless.
Page 15: Dangers When Handling The Device
· Hazardous voltages can be present in all cir- · Do not use Rittal measurement devices, modules cuitry parts that are connected to the power or components for critical switching, control or supply.
Page 16: Electrically Qualified Personnel
REM 801 www.rittal.com Electrically qualified personnel Safety information for handling current transformers To avoid bodily injury and material damage, only electrically qualified personnel are permitted to work The field of transformer technology groups the on the devices and their components, modules,...
Page 17: Safety Information For Handling Measurement Devices With Residual Current Measurement
· Only replace the battery with the same type or types recommended by Rittal! CAUTION · Observe the polarity when installing the bat- tery! Risk of injury or damage to the basic device (mod- ·...
Page 18: Product Description
REM 801 www.rittal.com Product description Device description CAUTION Malfunction and damage of the device or risk of injury due to improper connection. Improperly connected devices can deliver incorrect measured values, damage the device or pose a risk of injury to persons.
Page 19: Incoming Goods Inspection
REM 801 Incoming goods inspection ATTENTION Safe and trouble-free operation of this measurement Improper handling can damage the measurement device (with its modules and components) presup- device (possibly also modules and components) poses proper transport, storage, setup and assembly and lead to material damage!
Page 20: Performance Characteristics
· Connect the device and the radio/television receiv- operation. er in different circuits. · Expandable with current measuring modules and · if necessary, contact Rittal support or a radio/televi- digital input modules via transfer modules (see usage sion technician. information for the respective modules).
Page 21: Scope Of Delivery
REM 801 (basic device) 5231268 (only spring terminals) - Bus connector for module connec- Module 800-CT8-A tion to the REM 801 (basic device) 9393231 (current measuring module for the REM 801 as of FW version 1.5.0) - Installation manual DE/EN...
Page 22: Measuring Method
For more information, please refer to the usage Furthermore, please note that Rittal measurement information for the RD 96. devices, modules and components are not to be used for critical switching, control or protection ap-...
Page 23: Web Server With Device Homepage
REM 801 3.12 Web server with device homepage 3.13 Overview of the range of functions The measurement device has an integrated home- 3.13.1 Configuration on the device (via 6 but- page, and information on this can be found in Sect.
Page 24: Measured Values (With Voltage Component)
REM 801 www.rittal.com 3.13.3 Measured values (with voltage component) Device/system Channel Min. value Max. value Average Measured values related related value (with voltage component) ü ü ü Frequency ü Rotating field direction U System Measurement of positive, negative, zero se- ü...
Page 25 REM 801 Device/system Channel Min. value Max. value Average Measured values related related value (with current component) ü ü ü Power factor PF Fundamental oscillation power factor PF1 / ü ü ü Cos(Phi) ü ü Distortion factor I ü ü...
Page 26: Structure Of The Device
REM 801 www.rittal.com Structure of the device Front panel and display Lower terminal row Upper terminal row Fig.: Front view of the device (without terminals) Fig.: Front panel - 3D (without terminals)
Page 27 REM 801 Item Function/Designation Supply voltage connection. Current measurement inputs I5 to I8 for · Measurement of an additional system (L1, L2, L3, N). · Single channel measurements. Current measurement inputs I1 to I4 for · Measurement of one system (L1, L2, L3, N).
Page 28: Side Views (Device Without Terminals)
REM 801 www.rittal.com Side views (device without terminals) Bottom view (device without terminals) Bottom bolts JanBus interface (bus connector connection, module connection) Bottom bolts INFORMATION When the device is delivered, the bus connectors are already plugged into the JanBus interface!
Page 29: Identification Of The Device (Rating Plate)
SV 9393.211 S/N: xxxx/xxxx xx.xx.xxxx AUX: 24 V • 4W MAC: xx:xx:xx:xx:xx:xx RITTAL GmbH & Co. KG, Auf dem Stuetzelberg, 35745 Herborn Country of Origin: Germany Item Designation Description MAC address Unique identification of the device in a computer network.
Page 30: Mounting
REM 801 www.rittal.com Mounting Installation location ATTENTION Improper handling or handling them too roughly DANGER can destroy your devices, modules and compo- Danger of electric shock! nents! Electric shocks lead to serious injuries, including Contacts, bottom bolts and retaining brackets can be death.
Page 31: Bus Connector
REM 801 Bus connector INFORMATION The measurement device is supplied with the appropriate bus connectors. Please also note the following before setting up a measurement device and module topology · Mount the bus connector! · The usage information of the integrated modules...
Page 32 REM 801 www.rittal.com 3. Set up the measurement device with the bus connector on the DIN rail vertically and press until the 4 bottom bolts engage. SET UP VERTICALLY Position of the bus connector - mod- ule connection click! click! DIN rail Fig.
Page 33: Grid Systems
REM 801 Grid systems Suitable grid systems and maximum rated voltages according to DIN EN 61010-1/A1: Three-phase 4-conductor systems Three-phase 3-conductor systems with grounded neutral conductor with grounded phase : 480 V / 830 V 830 V : 347 V / 600 V 600 V Three-phase 4-conductor systems...
Page 34: Installation
260 V / 440 V to material damage! · Do not use Rittal measurement devices or com- 277 V / 480 V ponents for critical switching, control or protection Maximum nominal voltage of the applications (protective relays)! It is not permitted 347 V / 600 V...
Page 35: Circuit Breaker
REM 801 Circuit breaker INFORMATION When installing in a building, provide a suitable The fuse is a line protection, not a device protection! circuit breaker for the supply voltage in order to dis- connect your system and thus your device from the supply of power.
Page 36: Voltage Measurement
REM 801 www.rittal.com Voltage measurement INFORMATION The device has 4 voltage measurement inputs and is As an alternative to the fuse and isolation device, you suitable for various connection variants. can use a line circuit breaker. WARNING INFORMATION Risk of injury or damage to the device due to elec-...
Page 37: Connection Variants For Voltage Measurement
REM 801 7.4.3 Connection variants for voltage measurement Three-phase 4-conductor system Three-phase 3-conductor system Three-phase 4-conductor system without voltage transformer Three-phase 3-conductor system with voltage transformer Three-phase 4-conductor system Three-phase 3-conductor system Three-phase 4-conductor system with voltage transformer Three-phase 3-conductor system (asymmetrical load)
Page 38: Current Measurement
REM 801 www.rittal.com Current measurement WARNING The device: Risk of injury due to high currents and high elec- · Measures current exclusively via current trans- trical voltages! formers. Severe bodily injury or death can result from: · Touching bare or stripped leads that are ener- ·...
Page 39: Connection Variants For Current Measurement
REM 801 7.5.1 Connection variants for current measurement Current measurement I1 to I4 and I5 to I8 Three-phase 4-conductor system Three-phase 3-conductor system 35 36 Current measurement via 2 current transformers (Aron Current measurement via 3 current transformers circuit) Three-phase 4-conductor system...
Page 40: Summation Current Measurement
REM 801 www.rittal.com 7.5.2 Summation current measurement Multifunction channels The multifunction channels 1 to 4 (terminal pairs 7/8, For a summation current measurement via two 9/10, 11/12 and 13/14) can optionally serve as con- current transformers, first set their total ratio on the...
Page 41: Residual Current Measurement (Rcm)
REM 801 Residual current measurement (RCM) ATTENTION The measurement device is suitable as a residual Faulty cross currents, incorrect measurements, current monitoring device (RCM) for monitoring alter- and even damage to the device and/or your sys- nating currents, pulsating direct currents and direct...
Page 42: Current Direction Of The Residual Current Transformers
REM 801 www.rittal.com 7.7.1 Current direction of the residual current 7.7.2 Residual current transformer example transformers Operating equipment must have reinforced or double For residual current measurement with current trans- insulation from supply circuits! formers in AC operation at the measurement inputs,...
Page 43: Connection Examples - Residual Current Measurement
REM 801 7.7.4 Connection examples - Residual current CAUTION measurement Risk of injury or damage to the meter/your sys- e.g. e.g. tem due to short circuit! Residual current trans- Residual current trans- Inadequate insulation of the operating equipment at former CT-AC-RCM...
Page 44: Connection Example - Residual Current Monitoring
Connection example - Residual current monitoring N V3 V2 30 31 32 33 34 35 36 37 9 10 REM 801 Fig. Connection example REM 801 with residual current monitoring via 2 multifunction channels (7/8, 9/10) as measurement inputs for the residual currents. CAUTION...
Page 45: Residual Current Measurement - Limit Value Calculation
REM 801 Residual current measurement - limit 7.8.1 Static limit value calculation value calculation Required parameters: To set and calculate residual current limit values, the · Static residual current limit value. device requires parameters that you can set in the ·...
Page 46: Dynamic Limit Value Calculation
REM 801 www.rittal.com 7.8.2 Dynamic limit value calculation Example graph The example graph for the dynamic limit value shows Required parameters: the relationship between the residual current limit · Minimum time for which the residual current limit value and the reference value (e.g. "Power") with the value is exceeded (RCM alarm).
Page 47: Stepwise Limit Value Calculation
REM 801 7.8.3 Stepwise limit value calculation Example graph The example graph shows the stepwise increase Required parameters: of the residual current limit values as a function of · Reference value (e.g. power in kW). the reference value “power” (of the system) with the ·...
Page 48: Example: Residual Current Limit Value Exceeded
REM 801 www.rittal.com 7.8.4 Example: Residual current limit value The adjacent graphs explain the 3 events Warning exceeded limit exceeded, Residual current limit value ex- ceeded and Alarm flag with the states: Z 1 Z 2 · Warning limit value exceeded at time instant Z Residual current Warning flag (=1).
Page 49: Activating Cable Break Detection (Failure Monitoring) Rcm For The Multifunction Channels
REM 801 7.8.5 Activating cable break detection (failure monitoring) RCM for the multifunction channels. The device has a “cable break detection” (failure monitoring) function via OPC-UA. In this case, the device checks the connections to the residual cur- rent transformers at the measurement inputs (multi- function channels).
Page 50: Temperature Measurement
REM 801 www.rittal.com Example of temperature sensor: Temperature measurement A temperature sensor is to measure near uninsulated As already described in Sect. “7.6 Multifunction power lines in a 300 V CAT III network. channels” on p. 40, the terminal pairs 7/8, 9/10, 11/12 and 13/14 serve as optional connections for a Solution: temperature measurement.
Page 51 REM 801...
Page 52: Communication Via The Ethernet Interfaces
REM 801 www.rittal.com Communication via the Ethernet interfaces Functions of the Ethernet interfaces The measurement device has two Ethernet interfaces (A and B) for communication in Ethernet networks. ATTENTION There are 2 options to integrate the measurement device into Ethernet networks: Material damage due to security vulnerabilities in programs, IT networks and protocols.
Page 53: Switched Mode" Connection
Ethernet B (link) Switched mode: Ethernet interface B of the REM 801 for connecting an Ethernet device. The measurement device also allows the reverse use of the Ethernet interfaces (A for the Ethernet device and B for an IP address...
Page 54: Pc Connections And Other Interfaces
RS-485 (Modbus RTU) (Modbus TCP) Further server devices (formerly slave devices) E.g. REM 801 as gateway (Client device) 3. PC direct connection to the device. PC and de- vice require a fixed IP address. PC with manu- facturer-specific REM 801 software. Ethernet Patch cable...
Page 55 REM 801...
Page 56: Interface (Serial Interface)
RS-485 interface - REM 801: RS-485 bus Data GND Connection Additional devices Functional earth Upper terminal row B A C Termination (termination resistance) Illustration example: RS-485 interface of the REM 801 (in the middle of a bus topology - 3-pole plug contact).
Page 57: Shielding
REM 801 9.2.1 Shielding 9.2.2 Termination resistors/Termination For connections via the interfaces, use a twisted The device contains an integrated termination re- and shielded cable and observe the following for the sistor (S1). Terminate the beginning and the end of...
Page 58: Bus Structure (Bus Segment)
JanBus interface The JanBus interface: · Is a proprietary interface that is used to connect the REM 801 with modules (e.g. current measuring modules or digital input modules). · Is located on the back of the meter and supplies connected modules with power.
Page 59: Digital Inputs
Digital input · Functions for the digital inputs can be configured easily and clearly in the manufacturer-specific soft- ware. (see www.rittal.com). ATTENTION · The meter has the expansion option of up to 10 800- Transmission error and material damage due to DI14 digital input modules (see digital input module electrical malfunction.
Page 60: Digital Outputs
84. · Functions for the digital outputs can be configured easily and clearly in the manufacturer-specific soft- ware. (see www.rittal.com). · To use the manufacturer-specific software, your device requires a connection (interface) to a PC. · When using the digital outputs as pulse outputs, measurement errors can occur due to residual ripple.
Page 61: Analog Outputs
REM 801 Analog outputs External Auxiliary voltage 24 VDC The device has a passive analog output which REM 801 can output a current of 0 - 20 mA or 4 - 20 mA. An Digital outputs 1-4 external power supply unit (24 V DC) is required for operation.
Page 62: Operation And Button Functions
REM 801 www.rittal.com 10. Operation and button functions 10.1 Controls 10.3 Measuring display The device has a display and 6 function buttons to After restoration of network power, the device starts enable installation, commissioning and configuration with the measured value display Home.
Page 63: Pin (Password)
REM 801 10.5 PIN (password) The “Configuration” of the device requires entry of a PIN (password). Default setting (factory setting) of the device PIN: 00000000 The "PIN" is used to protect against unauthorized access or accidental modification of the configu- ration data.
Page 64: Overview Of Menu Displays
REM 801 www.rittal.com 10.6 Overview of menu displays Energy Active energy Menu Basic device 1-4 Home (start screen REM 801, Basic device 5-8 1st Measuring display) Reactive energy Basic device 1-4 Phasor diagram Basic device 5-8 Basic device 1-4 Apparent energy Basic device 5-8...
Page 65: System Information
REM 801 Configuration System information Ethernet config. A Basic device IP sett. Serial number IP address Netmask IP address Gateway Date Ethernet config. B HW version IP sett. SW version IP address SW build Netmask Module 1 Gateway Fieldbus Module x...
Page 66: Configuration
REM 801 www.rittal.com 11. Configuration 11.1 The Configuration window 11.2 Configuring Ethernet (TCP/IP) The Configuration menu of the device contains all INFORMATION parameters in which you make settings. The device · Consult your network administrator for the requires the supply voltage for configuration. See Ethernet network settings for your device.
Page 67: Communication Via Tcp/Ip
REM 801 11.2.1 Communication via TCP/IP · The configuration of the Netmask and the Gateway require the same procedure. The following applies for Ethernet config. A and · When you have finished entering data, press button Ethernet config. B: 1 ESC to return to the Menu window.
Page 68: Configuring The Fieldbus (Rs-485 Interface)
REM 801 www.rittal.com 11.3 Configuring the fieldbus (RS-485 interface) 11.3.1 Communication settings After restoration of network power, the device starts · Device address: with the default display Home. Select a device address for the device with which the device can be addressed in the bus structure.
Page 69: Configuring Current Transformers
REM 801 11.4 Configuring current transformers · The item for the primary side of the current trans- formers I1..I4 is marked in “blue”. INFORMATION Current transformer Before configuring the current transformer ratios, be certain to connect the transformers in compliance...
Page 70: Configuring Voltage Transformers
REM 801 www.rittal.com Current transformer settings (I1..I4 and I5..I8): · Confirm with button 3 Enter. · The item for the primary side of the voltage trans- Current transformer (primary): formers 1..4 “blinks”. Setting range 1 - 10000 A · Use buttons 4 () and 6 () to change the position Default value: 5 A...
Page 71: Temperature Measurement Configuration
40, temperature measurements on the REM 801 can optionally be carried out via the multifunction channels. The REM 801 temperature measurement can be configured in the manufacturer-specific software (for more information, see the "Online help" for the software).
Page 72: Configuring The Display
REM 801 www.rittal.com 11.7 Configuring the display · Use buttons 2 “5” and 5 “” to select the lan- guage (German or English) and confirm with Use the Display item of the meter to configure the button 3 Enter. following settings: ·...
Page 73: Brightness
REM 801 11.7.3 Brightness 11.8 Configuring the system Use the System item of the meter to configure the Use the item Brightness of the Display window to configure the brightness of the device display. following settings: Setting range: 10% - 100% 1.
Page 74: Restart (Reboot)
REM 801 www.rittal.com · Confirm your entries with button 3 Enter or end the 11.8.3 Time action by pressing button 1 ESC. You can change the settings for the time, the time · The configuration data of the device are now pro- synchronization and the time zones using the manu- tected with a new PIN.
Page 75: Reset
REM 801 11.9 Reset 11.9.2 Reset configuration In the Reset window, you can delete existing config- This function deletes all the configuration data of urations and/or restore the factory settings. your measurement device. It is not possible to select specific configuration data.
Page 76: Reset Minimum, Maximum And Average Values
REM 801 www.rittal.com 11.9.3 Reset minimum, maximum and average 11.9.4 Reset energy values values Use this function to delete all current energy values Using this function also deletes all the current in the meter. It is not possible to select specific ener- minimum, maximum and average values as well as gy values.
Page 77: Reset Historical Data
REM 801 11.9.5 Reset historical data 11.10 Module identification / diagnostics The device user can use this function to delete all INFORMATION historical values and data. It is not possible to select specific historical values. Before you start the module identification function...
Page 78: Events And Transients
INFORMATION (measured value) with the previous sample value --> "Rapid increase" mode. · For the REM 801, configure the events and tran- sients in the manufacturer-specific software. The REM 801 only records events and transients The measurement device has the following power...
Page 79: Event And Transient Recording
REM 801 11.11.3 Event and transient recording INFORMATION When an event or transient occurs, the measurement Events and transients must be configured for the device records half waves (half cycles) and data REM 801 in the manufacturer-specific software. points around the respective event/transient trigger (pulses which trigger events) - See Fig.
Page 80: Configuration Of The Waveform For Events And Transients
REM 801 www.rittal.com 11.11.4 Configuration of the waveform for 11.11.5 Half-wave RMS values for events events and transients Within half waves (10 ms), the measurement device The recording length (lead time and lag time - see compares the measured value (RMS) with the limit Fig.
Page 81: Update Time For Transients
REM 801 11.11.6 Update time for transients If a measured value exceeds the limit value config- ured in the manufacturer-specific software, the mea- surement device detects a transient. When transients occur, the meter captures data points around the respective transient trigger.
Page 82: Flicker
REM 801 www.rittal.com 11.11.8 Flicker The measurement device requires the fundamental network values for the voltage and frequency-de- pendent measurement and calculation of the flicker values (flicker measurement according to DIN EN61000-4-15:2011). The device user configures the fundamental network values (nominal values) in the device configurator in the manufacturer-specific software.
Page 83 REM 801...
Page 84: Digital Inputs And Outputs
20 Hz. The pulse duration (pulse width) and the pulse ily and clearly in the manufacturer-specific software. pause must be greater than 20 ms. The typical pulse The manufacturer-specific software is available for duration for S0 pulses is 30 ms. download from our website (www.rittal.com). Pulse 12.1 4 digital inputs pause Pulse duration >...
Page 85 REM 801 Measured value calculation: Measured value = pulse x pulse valency Power value calculation: Pulse x pulse valency Power value = Time [s] Since the pulse interval can be very large, continuous calculation of the measured or power values is not possible.
Page 86: Digital Outputs
REM 801 www.rittal.com 12.2 4 digital outputs Pulse output The 4 digital outputs of the device are used to pro- The digital outputs can be used to output pulses duce pulses for counting the energy consumption. for counting the active energy, apparent energy and The current measuring channels of the basic device reactive energy.
Page 87 REM 801 2. Determine maximum connected load INFORMATION Example: Current transformer = 150/5 A When using the digital outputs as pulse outputs, Voltage L-N = max. 300 V measurement errors can occur due to residual ripple. For the supply voltage (DC) of the digital inputs and...
Page 88: Comparator
REM 801 www.rittal.com 12.3 Comparator INFORMATION To monitor limit values, the measurement device has In addition to selecting previously configured 125 comparators which the user can assign to 32 profiles for the comparators, you can also assign comparator groups in the Manufacturer-specific names for comparators and comparator groups in software.
Page 89 REM 801 Comparator without hysteresis Measured value · The set limit value is compared with the mea- sured value. Limit value · If there is a limit violation for at least the dura- (threshold) tion of the lead time, the comparator result is changed.
Page 90: Analog Outputs
REM 801 www.rittal.com 13. Analog outputs The device has an analog output which: Principle of analog output examples: · Supplies a current of up to 20 mA. Monitoring of voltage · Requires an external 24 V DC power supply for (output range 4 - 20 mA): operation.
Page 91 REM 801...
Page 92: Commissioning
REM 801 www.rittal.com 14. Commissioning 14.2 Measured voltage INFORMATION Connect measured voltage: Before commissioning, delete possible produc- 1. Connect the measured voltage to the terminals tion-related contents of the energy meters, minimum provided for this purpose (see section „7.4 Volt- and maximum values as well as recordings (for more age measurement“...
Page 93: Measured Current
REM 801 14.3 Measured current 14.4 Frequency measurement The device: For the measurement and calculation of measured · Measures current exclusively via current transform- values, the device requires the nominal or mains ers. frequency. The mains frequency can either be spec- ·...
Page 94: Direction Of Rotary Field
REM 801 www.rittal.com 14.5 Direction of rotary field 14.6 Fundamentals on the phasor diagram To determine the direction of the voltage rotating The phasor diagram graphically describes the phase field, refer to the “Phasor diagram” display: shift or phase angle between the voltage and the current.
Page 95: Checking Of Voltage And Current Inputs By Means Of Phasor Diagram
REM 801 With a combination of the states, the phase angle 14.7 Checking of voltage and current inputs by “current to voltage” can assume values between means of phasor diagram -90° and +90°. The phasor diagram can be used to check incorrect connections at the voltage and current inputs.
Page 96: Checking The Power Measurement
REM 801 www.rittal.com 14.9 Checking the power measurement 14.12 Checking summation power 1. Short-circuit all current transformer outputs ex- If the meter correctly measures and displays all volt- cept one and check the indicated powers. ages, currents and powers for the respective phase 2.
Page 97: Drag Indicator Function
REM 801 14.13 Drag indicator function Time instant Time instant Time instant Time instant Average value Average value Average value Average value The "drag indicator" function of the measurement calculation calculation calculation calculation device records the 3 highest average values of mea-...
Page 98 REM 801 www.rittal.com 2. External synchronization - synchronization by 3. External synchronization - Synchronization via rising or falling edge at digital input 4 Modbus With the configuration "Synchronization by rising With the configuration "Synchronization via Mod- edge at digital input 4" or Synchronization by bus", the drag indicator synchronization takes place...
Page 99: Drag Indicator - Measurement Device Display
REM 801 14.13.2 Drag indicator - measurement device Drag pointer I #1 Basic device 1-4 display Value Date & Time As already described in the section „Drag indicator 2.200A 27.02.2023 11:38 function“ on page 97, the drag indicator function 27.02.2023 11:38 1.100A...
Page 100: Resetting The Drag Indicator
REM 801 www.rittal.com 14.13.3 Resetting the drag indicator 14.14 Average value - gridded and moving Use the menu Configuration > Reset > Min.-/Max.-/ The measurement device records average values Avg. to reset the minimum, maximum and average for the measured voltages, currents, powers and values as well as the drag indicator values.
Page 101: Moving Average Value
REM 801 Gridded averages allow you to compare the time 14.14.3 Gridded and moving average in the periods from several measurement devices that are manufacturer-specific software synchronized. As already mentioned in section 14.14, the averaging interval (time base) and the type of averaging must Example of a 15 min.
Page 102: Overview Of Measured Value And Meter Displays
REM 801 www.rittal.com 15. Overview of measured value and meter displays INFORMATION The following measured-value and meter displays do not show a specific application and may differ depend- ing on the connection of your measurement device and the measuring environment, e.g. for measurements in 3 or 4-conductor networks (TN, TT and IT networks) or with connected current measuring modules, etc.
Page 103 REM 801 Menu (Voltage) Menue Menu Voltage Voltage Home Home Value Avg. Max. Zeigerdiagramm Phasor diagram L1-N 229.5V 229.2V 232.1V Spannung Voltage THD U L2-N 229.7V 229.4V 231.8V Strom Current L3-N 230.0V 229.8V 232.0V Leistung Power Display "Voltage (LN)” L1-N, L2-N, L3-N with mean and maximum values.
Page 104 REM 801 www.rittal.com Menu (Current) Menu Home Phasor diagram Voltage Current Power Submenu (Current) Current Current Current Basic device 1-4 Value Avg. Max. Current Basic device 1-4 THD I Basic device 5-8 1.940A 1.940A 1.940A 1.940A 1.940A 1.940A 1.940A 1.940A 1.940A 0.001A...
Page 105 REM 801 Menu (Power) Menu Home Phasor diagram Voltage Current Power Submenu (Power summary) Power Power summary Power summary Basic device 1-4 Power summary Basic device 1-4 Active power Basic device 5-8 0.10kW -0.00kvar 0.19kVA Reactive power 0.10kW -0.00kvar 0.19kVA Apparent power 0.10kW...
Page 106 REM 801 www.rittal.com Submenu (Reactive power) Power Reactive power Reactive power Basic device 1-4 Power summary Basic device 1-4 Value Avg. Active power Basic device 5-8 -0.02kvar -0.01kvar Reactive power -0.02kvar -0.01kvar Apparent power -0.02kvar -0.01kvar Σ Power factor -0.06kvar -0.02kvar Display "Reactive power 1-4”...
Page 107 REM 801 Submenu (Power factor) Power Power factor Power factor Basic device 1-4 Power summary Basic device 1-4 cos(phi) Power factor Active power Basic device 5-8 0.984 0.513 Reactive power 0.985 0.513 Apparent power 0.985 0.513 Σ Power factor 0.985 0.981...
Page 108 REM 801 www.rittal.com Submenu (Reactive energy) Energy Reactive energy Reactive energy Basic device 1-4 Active energy Basic device 1-4 Sum L1..L3 Reactive energy Basic device 5-8 Inductive 0.9kvarh Apparent energy Capacitive 0.9kvarh Display "Reactive energy 1-4”, sum L1..L3, induc- tive and capacitive.
Page 109 REM 801 Menu (drag indicator) Menu Energy Drag pointer Multifunctional channels Digital I/O status Configuration Submenu (basic device 1-4) Drag indicator current "I" Drag pointer I #3 Basic device 1-4 Drag pointer Value Date & Time Drag pointer I #2...
Page 110 REM 801 www.rittal.com Submenu (basic device 5-8) Drag indicator current "I" Drag pointer Drag pointer I #3 Basic device 5-8 Basic device 1-4 Value Date & Time Drag pointer I #2 Basic device 5-8 Basic device 5-8 2.288A 27.02.2023 11:48 Value Date &...
Page 111 REM 801 Menu (Multifunction channels) Menu Energy Drag pointer Multifunctional channels Digital I/O status Configuration Submenu (current measurement) Display "Current measurement” for multifunction Multifunctional channels Current measurement channels 1-4 with current and maximum value Current measurement Value Max. Temperature 0.56mA 0.65mA...
Page 112 REM 801 www.rittal.com Submenu (RCM bar charts) RCM bar graphs RCM bar graphs 1 & 2 Multifunctional channels RCM bar graphs 1 & 2 Current measurement RCM 1 RCM bar graphs 3 & 4 Temperature [mA] 1000 2000 3000 4000 5000...
Page 113 REM 801 Menu (digital I/O status) Menu Digital I/O status Digital I/O status, basic device Energy Basic device Drag pointer Digital I/O status, modules Multifunctional channels Digital I/O status Configuration Display of status messages of the basic device digital inputs and outputs.
Page 114 REM 801 www.rittal.com Menu (Diagnostics) Menu Diagnostic No modules Drag pointer There are no modules Identify all modules connected. Multifunctional channels Identify single modules Digital I/O status Configuration Diagnostic The display “Identify all modules” appears on the basic device only when modules are con-...
Page 115 REM 801...
Page 116: Connection Example
REM 801 www.rittal.com 16. Connection example JanBus interface RJ45 RJ45 Ethernet A Ethernet B...
Page 117: Dismounting
REM 801 17. Dismounting 3. Remove the end brackets and, if applicable, also Dismounting the measurement device: the end brackets of connected module series. 1. Disconnect the system/measurement device 4. Unlock all bottom bolts of the measurement from the power supply before starting work! device.
Page 118: Device Homepage
Sect. “11.2 Configuring Ethernet (TCP/ tation (as PQDIF/COMTRADE file downloads or in IP)” on p. 66). an events and transients overview). 18.1 "Home" start page REM 801 Messgerät - NAME (Channel 1 - 4) "Home" start page of the REM 801 device homepage.
Page 119: Login
Default settings: To configure the measurement device or modules · User name (unchangeable): admin via the device homepage, you need the login data, · Password: Rittal consisting of an unchangeable user name (admin) and the corresponding password (manufactur- INFORMATION er-specific).
Page 120: Change Password
REM 801 www.rittal.com 18.1.2 Change password After the first login, change the password in the "Change password" dialog box under the menu bar item "Settings". REM 801 - Name "Change password" dialog box under "Settings" menu bar item.
Page 121: Measured Values" Menu Bar Item
· Login (blue) - opens the "Login" dialog box with an unchangeable User name (ad- min) and a place for the input of the password to the device homepage configuration. Login (blue) / Default settings: User name (unchangeable): admin - password: Rittal Logout (red) After the first login, change the password under "Settings"...
Page 122: Events And Transients
COMTRADE format), depending on the time period set (Item 4). Display of events and transients sorted by the time periods: · The last 24 hours Period · The last 7 days buttons · The last 30 days · All Tab. REM 801 homepage: Measured values > Events and transients...
Page 123: Settings" Menu Bar Item
A = "dynamic" and B = "static" - see Sect. “11.2 Configuring Ethernet (TCP/IP)” on p. 66). NTP server Configuration of up to 6 NTP servers (standard server for time synchronization) fold-out dialog Tab. REM 801 homepage: Settings...
Page 124: Firmware Update
Description Selection field with upload button for a Firmware update of your measurement Firmware update device. The most up-to-date firmware for the REM 801 can be found on the Rittal fold-out dialog homepage. Tab. REM 801 homepage: Settings > Firmware update...
Page 125: Whitelist (Modbus Port 502)
Configuration of a whitelist - a list of legitimate, verified devices that have access to the bus port 502) Modbus via the Ethernet interfaces of the REM 801. fold-out dialog If no device is entered in the Whitelist , the "Whitelisting" feature is deactivated. Tab. REM 801 homepage: Settings > Whitelist...
Page 126: Information" Menu Bar Item
REM801-4700-0093 Item Control element Description Device informa- Overview of the measurement device in your application with general information, infor- tion, REM 801 mation about voltage transformer ratios and current transformer ratios. fold-out dialog Tab. REM 801 homepage: Information > Device information...
Page 127: Modbus Address List
The Download as csv file button in List of Modbus addresses (with the Download as csv file button). the Modbus ad- dress list window Tab. REM 801 homepage: Information > Modbus address list 18.4.3 Imprint REM 801 - Name Telefon: +49 (0)2772-505-0 E-Mail: info@rittal.de...
Page 128: Service And Maintenance
REM 801 www.rittal.com 19. Service and maintenance The manufacturer, RITTAL GmbH & Co. KG, subjects 19.2 Front panel foil and display the device to various safety tests before delivery and Please note the following for the care and cleaning of marks it with a seal.
Page 129: Device Adjustment
· Only replace the battery with the same type or The supply voltage supplies the internal clock of types recommended by Rittal! the measurement device. If the supply voltage fails, · Observe the polarity when installing the bat-...
Page 130: Error Messages
REM 801 www.rittal.com 20. Error messages 20.1 Overrange The measuring range is exceeded if at least one of the voltage or current measurement inputs lies out- side its measuring range. ATTENTION Material damage due to disregard of the connec- tion instructions! Voltages and currents outside the permissible mea- suring range can destroy the device.
Page 131: Procedure In The Event Of A Malfunction
REM 801 20.2 Procedure in the event of a malfunction Failure mode Cause Remedy External fuse for the supply voltage has No display Replace fuse. tripped. No measured voltage connected. Connect measured voltage. No current display. No measured current connected.
Page 132: Technical Specifications
Nominal range DC: 24 V, PELV Operating range +/-10% of nominal range Power consumption max. 4 W 14 W Maximum power consumption with modules (REM 801: 4 W plus modules: max. 10 W) Recommended overcurrent 2-6 A, (Char. B), IEC/UL approval protective device for line protection...
Page 133 REM 801 Voltage measurement 480 V LN / 830 V LL (+/-10%) according to IEC Three-phase 4-conductor systems with rated voltages up to 347 V LN / 600 V LL (+/-10%) according to UL 830 V L-L (+/-10%) according to IEC 3-phase 3-conductor systems (grounded) with rated voltages up to...
Page 134 REM 801 www.rittal.com The device has, optionally, 4 multifunction channels, for use as · Residual current measurement inputs and/or temperature measurement inputs (mixed), · Additional system inputs (L1, L2, L3; N) Residual current measurement (RCM) Nominal current 30 mA eff Measuring range 0 ..
Page 135: Ethernet Interfaces
REM 801 Cable length (digital inputs/outputs) Up to 30 m (32.81 yd) Unshielded Greater than 30 m (32.81 yd) Shielded Analog outputs 1 channel External supply max. 33 V DC Current 0/4...20 mA DC Update time 0.2 s Load max. 300 Ω Resolution 10 bit RS-485 interface...
Page 136 REM 801 www.rittal.com Potential isolation and electrical safety of the interfaces The interfaces (RS-485, Ethernet) have: · Double insulation to the inputs of the voltage and current measurement. · Functional insulation relative to each other, to the supply voltage, to the measurement inputs for residual current and temperature, to the digital inputs/outputs and to the analog output.
Page 137 REM 801 Connection capacity of the terminals - functional earth A/D Connectible conductors. Only connect one conductor per terminal point! Single core, multi-core, fine-stranded 0.2 - 4 mm , AWG 24-12 Wire ferrules (non-insulated) 0.2 - 4 mm , AWG 24-12 Wire ferrules (insulated) 0.2 - 2.5 mm...
Page 138 REM 801 www.rittal.com Optional accessory pack (part. no., see Sect. “3.8 Accessories” on p. 21): Connection capacity of the terminals - Functional earth A/D - Spring terminal (push-in terminal) Connectible conductors - only connect one conductor per terminal point! Single core, multi-core, fine-stranded (min. - max.) 0.5 mm...
Page 139 REM 801...
Page 140: Performance Characteristics Of Functions
REM 801 www.rittal.com 21.2 Performance characteristics of functions Function Symbol Accuracy class Measuring range Display range Frequency 0.05 (IEC61557-12) 40 .. 70 Hz 40.00 .. 70.00 Hz Voltage U L-N 0.2 (IEC61557-12) 10 .. 720 V eff 0 .. 999 kV Voltage U L-L 0.2 (IEC61557-12) 18 ..
Page 141: Parameter And Modbus Address List
21.3 Parameter and Modbus address list INFORMATION A standard Modbus address list with explanations of measured values and a formulary can be found in the download area at www.rittal.com. 21.4 Information on saving measured values and configuration data INFORMATION The device stores the following measured values every 5 minutes at the latest: ·...
Page 142: Dimensional Drawings
REM 801 www.rittal.com 22. Dimensional drawings · The figures are for illustration purposes only and are not to scale. · Please also note the dimensions of the terminals used during installation! · All dimensions in mm (in). INFORMATION In addition to the dimensional drawings in this user manual, also refer to the dimensional drawings in the usage...
Page 143 REM 801 22.2 Bus connector Bus connector of the REM 801 for mounting mod- ules: Contacts for insertion into the back of the device Sockets for the insertion of a module INFORMATION Observe Sect. “5. Mounting” on p. 30 when mounting the measurement device with bus connec-...
Page 144 REM 801 www.rittal.com NOTES...
Page 145 REM 801 NOTES...
Page 146 RITTAL GmbH & Co. KG Auf dem Stuetzelberg D-35745 Herborn • Germany Phone +49 (0)2772-505-0 E-Mail: info@rittal.de www.rittal.com...

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