User Guide for Schneider Electric models including: Harmony Control Relay, Harmony, Control Relay
Harmony, Modular 3-phase undervoltage control relay, 8 A, 2 CO, 2 | Crescent Electric Supply Company
Harmony, Modular multifunction 3-phase supply control relay, 5 A, | Crescent Electric Supply Company
Harmony, Modular 1-phase voltage control relay, 8 A, 2 CO, 1100 V | Crescent Electric Supply Company
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DocumentDocumentHarmony Control Relay Application Guide Wei Yi CHIA, Relays Product Manager weiyi.chia@se.com Document version 1 - 08/2021 Scan/Click the link to learn more about Harmony Control Relays! Website Catalog Video Confidential Property of Schneider Electric Link Link Internal Link Do you face such issues? · Unreliable performance because of poor quality of power supply · Equipment downtime and lost productivity due to motor failure These issues are usually caused by common phase issues below: Phase loss Total loss of one of the three phases due to blown fuse, open power line, loose connections... Incorrect phase sequence Two phases in a three-phase system have been swapped hence causing the motor to run in the reverse direction. Asymmetry One or more of the line-to-line voltages in a three-phase system are mismatched. Undervoltage When the average voltage of a three-phase power system falls below intended levels. Overvoltage When the supply voltage rises above the rated voltage of the motor. In general, all these issues can cause the current drawn by the motor to increase. This generates heat that deteriorates the motor insulation and damages the motor rapidly. Control Relay is the best protection against these issues! Confidential Property of Schneider Electric | Page 2 Internal What is a Control Relay? · Monitor and detect operating conditions concerning phase, current, voltage, frequency, temperature, liquid level and speed · Inform users about abnormal conditions and allow them to take necessary corrective actions before severe and costly failures can occur Confidential Property of Schneider Electric | Page 3 Internal Harmony Control Relay Product Overview Type Range Dimension (mm) RM17 17.5 Applications 3-phase, 1-phase voltage, 1-phase current No. of contacts 1 or 2 C/O Current (A) 5; 8 Dial Pointer LED, Diagnostic No Button Logic Time delay Power supply Conventional RM22 22.5 3-phase, 1-phase voltage, 1-phase current, Liquid level 2 C/O 8 RM35 35 3-phase, 1-phase voltage, 1-phase current, Liquid level Pump, Frequency, Speed, Temperature 1 or 2 C/O 2 N/O 5 Near field communication (NFC) technology RMNF22TB30 22.5 3-phase 2 C/O (individually configurable) 8 Yes No Positive Positive/Negative With/Without Self Powered/ External power supply Confidential Property of Schneider Electric | Page 4 Internal Unique Value Propositions Compact modular sizes (width) to fit most application needs RM17 17.5 mm RM22 22.5 mm RM35 35 mm IP50 lead-sealable settings protection cover helps prevent dust and unintended human intervention · True RMS measurement to measure pure sinusoidal waves and non-sinusoidal waves more accurately. · This eliminate errors in the measured waveforms from short spikes, sudden surges or distortions, thereby minimizing unexpected trips from highly polluted networks *For conventional type control relays Confidential Property of Schneider Electric | Page 5 Internal Dial pointer LED for easy setup in dark conditions Diagnostic button is used to close the downstream circuit immediately without sending a fault input signal to the relays. This shortens the testing time during commissioning and troubleshooting. Advanced control of your three-phase network with NFC Control Relay Near field communication (NFC) is a technology commonly used in smartphones enabling users to make mobile payments. Brought to a control relay, it dramatically improves the solution's usability and the user's experience, bringing digital instead of analog operation. NFC Control Relay RMNF22TB30 3 Phase Control all in one! Enhance monitoring and testing Time-saving · One reference covering 7 · 4 new LEDs at the side to · Easy and fast cloning the control functions Phase loss, address customer's needs to parameters between relays phase sequence, asymmetry, overvoltage, undervoltage, know exact fault visually · Settings shared via multiple overfrequency and underfrequency · Read relay status to obtain real channels dependent of time data of network connections phone (email, SMS etc.) · 2 outputs, individually configurable · Diagnose feature to show 20 historical faults through event · Auto-configure option to "teach" the product to · Wide range of voltage supplied logging propose settings with real- 208...480 VAC, 90% of global market applications · Configure up to 10 Alarms with different monitoring time 3-phase network connections · Monitors 3-phase or 3-phase + N functions network · Simulator available to check Peace of mind from superior security · Conventional terminal layout of logic validity in alarm 22.5 mm width meaning no combination · Set a four-digit password changes to panel wiring design to ensure the relay remains · Manage relays without power safe and untampered Scan here to view our Promotion video Scan here to read our Blog article Internal Applications Harmony Control Relay offers a comprehensive range of control relay to suit a wide range of applications Escalator HVAC Machinery Data Centre Street Lighting Elevator Machine Room Pumps Food Processing Wind Turbines Material Handling Confidential Property of Schneider Electric | Page 7 Click the link to learn more on each application Click to return to this overview page Internal Motor protection (Escalator, Material Handling...) Three-phase monitoring Challenge Motor failure and reverse motor operation, due to phase loss or phase sequence, can led to equipment failure Solution Recommend! RM17TG00/RM17TG20/RM22TG0 If a sequencing fault or total loss of two or more phases is detected (detected as soon as two of the voltages drops below 100V), the relay opens instantly and LED goes off RM17TG00 RM22TG0 RMNF22TB30 RM17TG20 L1 L2 L3 Incorrect phase sequence Phase loss RMNF22TB30 (NFC Control Relay) · Phase loss or phase sequence values can be set individually using the Zelio NFC App · If a sequencing or phase loss fault is detected, the relay output opens or closes based on user Alarm settings in App Ideal for trouble shooting and maintenance! · Four front-facing LED lights to indicate the exact fault condition · Real-time monitoring of system conditions via App · Record 20 historical faults into events with data of exact failures via App Confidential Property of Schneider Electric | Page 8 Alarm output Internal Compressor system (HVAC machinery etc. Refrigerating Machines, Air Conditioners...) Three-phase monitoring Challenge Compressors are unable to function when fault conditions such as phase loss, phase sequence, asymmetry, overvoltage and undervoltage occur Solution Recommend! RM17TE00 RM35TF30 RMNF22TB30 L1 L2 L3 RM17TE00, RM35TF30 · If a sequencing or phase loss fault is detected, the relay opens instantly · If an asymmetry or voltage fault is detected, the relay opens at the end of the time delay set by the user An adjustable time delay on threshold crossing provides immunity to transients and helps prevent spurious triggering of the output relay RMNF22TB30 (NFC Control Relay) · If a sequencing or phase loss fault is detected, the relay output opens or closes based on user Alarm settings in Zelio NFC App · If a voltage fault or asymmetry is detected, the relay opens or closes at the end of time delay set by the user through the App Alarm output Confidential Property of Schneider Electric | Page 9 Easy configuration! · One product reference with 7 control functions: Phase loss, Phase sequence, Asymmetry, Overvoltage, Undervoltage, Overfrequency and Underfrequency · 2 individually configurable relay outputs to enhance monitoring Internal Monitor Power Supply (Telecommunication tower, Data center, Utility supply, Battery monitoring) Single-phase monitoring (voltage) Challenge Power disruption due to overvoltage or/and undervoltage conditions could lead to equipment and system failure · The undervoltage or overvoltage threshold Solution value is set by means of the potentiometer(s) graduated as a % of the scale value · An adjustable time delay on threshold crossing provides immunity to transients, helping prevent spurious triggering of the output relay · Support two operating modes: Overvoltage or undervoltage; Overvoltage and undervoltage in window mode RM17UAS* RM17UBE* Self powered RM22UA* RM22UB* RM35UA* External power supply Overvoltage · If controlled voltage exceeds the threshold setting for a time greater than time delay, the output relay opens and R LED goes off L1 L2 L3 N L1 L2 L3 N · As soon as the voltage falls below the threshold setting value minus the hysteresis, the relay instantly closes for no memory mode Undervoltage · If the controlled voltage falls below the threshold setting for a time greater than time delay, the output relay opens and the R LED goes off · As soon as the voltage rises above the value of the threshold setting plus the hysteresis, the relay instantly closes Alarm output Confidential Property of Schneider Electric | Page 10 Alarm output If "Memory" mode is selected, the relay opens when threshold crossing is detected and then stays in that position. The power must be switched off to reset the product Internal Lighting Control (Building, Car tunnel, Street lighting...) Single-phase monitoring (current) Challenge Monitoring lighting circuits in critical locations to detect burnt-out lights caused by undercurrent or overcurrent conditions Solution RM17JC000MW (with built in CT transformer) L1 L2 L3 N RM22JA* RM35JA* ... · The undercurrent or overcurrent threshold value is set by means of the potentiometer(s) graduated as a % of the scale value · An adjustable time delay on threshold crossing provides immunity to transients, helping prevent spurious triggering of the output relay. · Support two operating modes: Overcurrent or undercurrent; Overcurrent and undercurrent in window mode Overcurrent · If controlled current exceeds the threshold setting for a time greater than time delay, the output relay opens and R LED goes off · As soon as the current falls below the threshold setting value minus the hysteresis, the relay instantly closes for no memory mode Undercurrent · If the controlled current falls below the threshold setting for a time greater than time delay, the output relay opens and the R LED goes off. · As soon as the current rises above the value of the threshold setting plus the hysteresis, the relay instantly closes If "Memory" mode is selected, the relay opens when threshold crossing is detected and then stays in that position. The power must be switched off to reset the product Page 11 Alarm output Confidential Property of Schneider Electric | Internal Temperature control for elevator machine rooms Temperature monitoring Challenge If the room air temperature in elevator machine room is too hot or cold, it can lead to equipment failure (e.g. overheating due to high outside temperature) Solution RM35AT* 1-Phase (monitor overtemperature, undertemperature) RM35ATL0MW RM35ATR5MW 3-Phase (monitor overtemperature, undertemperature, Phase loss, phase sequence) RM35ATW5MW 3-wire PT100 probe to monitor the temperature L1 L2 L3 CONTACTOR · Designed for monitoring the temperature in elevator machine rooms, in compliance with directive EN81 · Independent adjustment of high (34...46°C) and low (-1...11 °C) thresholds · If the temperature monitored by the PT100 probe remains between the two thresholds set on the front panel, the output relay is closed · When the temperature crosses one of the threshold settings on the front panel (high or low threshold), the time delay set on the front panel is activated. The yellow LED corresponding to the threshold crossed (low or high) flashes. · At the end of the time delay, if the temperature is still outside the threshold setting, the output relay opens and the yellow LED goes out. · The output relay closes instantly when the temperature returns within the window of the two threshold settings on the front panel plus (undertemperature) or minus (overtemperature) the fixed hysteresis. · If the PT100 probe is incorrectly wired (missing or short-circuited) the relay is open and the 3 LEDs flash to alert users Confidential Property of Schneider Electric | 3 phase set up Page 12 Refer to instruction sheet for more details on set up Internal Monitor 1 phase and 3 phase pumps Pump control Challenge Pump can be damaged due to dry running (undercurrent), overloading (current) and motor failure (Phase loss and phase sequence) Solution RM35BA10 1-Phase Monitor Overcurrent & Undercurrent 3-Phase Monitor Phase sequence, Phase loss, Overcurrent & Undercurrent L1 L2 L3 CONTACTOR Control signal inputs Y1,Y2 can be connected to level sensor/ level relay/ pressure sensor/ pushbutton Confidential Property of Schneider Electric | 3 phase set up, <10A Page 13 · RM35BA10 can operate on a 1-phase (230 V ac) or 3-phase supply (208...480 Vac) · Overcurrent and undercurrent values are set by two separate potentiometers, graduated from 1 to 10 A · If a setting error occurs (e.g. low threshold greater than high threshold during double control mode), output relay opens and all the LEDs flash to signal the error · If a current fault occurs (overcurrent or undercurrent), the relay opens when the fault persists for longer than the threshold time delay setting · When current returns to correct value, output relay remain open. It can only be re-energized by a RESET: either by switching off the power (double control mode) or by closing external contact Y2 (in single control mode) · An inhibition time delay on energization allows detection of current peaks on motor starting Double control mode: control a pump via two external control signals Y1 and Y2 Single control mode: control a pump via an external signal Y1; Y2 can be used to reset the relay after a current fault Refer to instruction sheet for more details on set up Internal Monitor the levels of conductive/non-conductive liquids (Pumps, Food processing, Pharmaceutical...) Liquid level monitoring Challenge Accurate liquid level control through filling or/and emptying to protect pumps against dry running, overflow protection in tanks, control dosing of liquids in mixing processes and to help protect heating elements in the event of non-immersion. Solution · Selector switches on the front panel allows selection of the sensitivity range, empty or fill function, number of levels (1/2) and type of time delay · Operating principle is based on measurement of the apparent resistance of the liquid between two submerged probes. When this value is less than the threshold setting on the front panel of the device, the relay changes state RM22L* RM35LM* RM35LV* Detection by resistive probes Detection by discrete sensors L1 L2 L3 N · To avoid electrolytic phenomena, an AC current runs across the probes E.g. Control of two levels, empty and fill functions Emptying function · Output relay stays open until the liquid reaches the Max. level probe. As soon as the Max. level is reached, the contact closes and then allows emptying of the tank When the level drops below the Min level, the contact opens to stop the emptying process Filling function CONTACTOR Max Min C · Output relay stays energized until the liquid reaches the Max. level probe. As soon as the Max. level is reached, the contact opens and the pump stops. When the level drops below the Min. level, the contact closes again and pumping restarts to raise the level Control of a single level can be achieved by using the second selector switch. In this case, the Max. level probe stays up in the air and an adjustable time delay avoids any wave effect Internal Monitors frequency variations on 50/60 Hz AC supplies (Wind turbines, Generator...) Frequency monitoring Challenge Avoid risk of a system collapse due to frequency instability (especially when wind power penetration is high and system inertia is low in wind turbines) Solution RM35HZ21FM L1 L2 L3 N CONTACTOR · Under-frequency or over-frequency threshold values are set using two graduated potentiometers indicating the variation value of the frequency to be monitored. · A switch x1/x2 allows the control scale to be doubled. Hysteresis is fixed at 0.3 Hz Overfrequency · If frequency of the voltage controlled exceeds the over-frequency threshold setting for a time greater than time delay, the corresponding output relay opens and its LED goes off. · As soon as the frequency drops below the value of the threshold setting, minus the hysteresis, the relay instantly closes for no memory mode Underfrequency If the frequency of the voltage controlled falls below the under-frequency threshold setting for a time greater than time delay, the corresponding output relay opens and its LED goes out · As soon as the frequency rises above the value of the threshold setting, plus the hysteresis, the relay instantly closes for no memory mode If "Memory" mode is selected, the relay opens after the time delay and stays in that position when crossing of the threshold is detected. The power needs to be switched off to reset the product Internal Monitoring speed or rate of rotary or linear movements (Packaging, Material handling...) Speed monitoring Challenge If a conveyor experience unwanted slowdown, rapid speed or complete stoppage, the results could be disastrous as machine could be damaged and led to costly process downtime Solution · RM35S0MW monitors underspeed or overspeed of a process using discrete sensors · The cycle of the process being monitored is a series of impulses characterized by a two-state signal: high and low · The speed is obtained by measuring the period of this signal, from the detection of first change of state (either rising or falling edge) RM35S0MW S2 Inhib. - Reset Volt-free contact input Namur proximity sensor input · To allow the process being monitored to reach its nominal operating speed on energization, relay is inhibited by starting inhibition time delay (Ti) or closing of S2 Inhibition keeps the output relay in the closed position and is signaled by illumination of the inhibition LED. It last as long as it is necessary for the product to detect at least 2 periods When the signal has not been `characterized' by the end of the inhibition period, the inhibition LED flashes for as long as speed measurement is impossible Underspeed 0-30 V voltage input 3-wire PNP or NPN proximity sensor input At the end of Ti, as soon as the speed measured drops below the threshold setting, the output relay open. It returns to its initial state when the speed is again higher than the threshold plus hysteresis for no memory mode Overspeed S1 At the end of Ti, as soon as the speed measured is higher than the threshold setting, the output relay open. It returns to its initial state when the speed is again lower than the threshold plus hysteresis for no memory mode If "Memory" mode is selected, the output relay stays in the open state, irrespective of any further changes in the process speed. It will not be able to return to the closed state until contact S2 closes (at least 50 ms) Internal Product Bundle for Packaging application RM35S0MW Unwanted slowdown, rapid speed or complete stoppage can damage conveyor and cause downtime Dedicated speed control relay to monitor the speed of conveyor belt to ensure a constant speed is maintained Directional change in conveyor belt or motor failure can also damage conveyor and cause downtime RMNF22TB30 NFC Control Relay can easily and efficiently monitor phase loss, phase sequence, asymmetry, overvoltage and undervoltage Confidential Property of Schneider Electric | Page 17 Internal Product Selection Table Application 3 Phase Monitoring Temperature control for elevator machine rooms and 3 Phase supplies 1 Phase voltage monitoring 1 Phase current monitoring Pump Control Level control Frequency control Speed control Functions Phase loss, Phase sequence Phase loss, Phase sequence and Asymmetry Phase loss, Phase sequence and Motor temperature Phase loss, Phase sequence and Undervoltage Phase loss, Overvoltage and Undervoltage, Absence of neutral Phase loss, Phase sequence, Overvoltage and Undervoltage Phase loss, Phase sequence, Asymmetry, Overvoltage and Undervoltage Phase loss, Phase sequence, Asymmetry, Overvoltage and Undervoltage, Overfrequency and Underfrequency Phase loss, Phase sequence, Over temperature and Under temperature Overvoltage or Undervoltage Overvoltage and Undervoltage Overcurrent or Undercurrent Overcurrent and Undercurrent Phase loss, Phase sequence, Overcurrent and Undercurrent Fill/Empty operation Over-frequency and Under-frequency Over or Under operating rate/speed Range/Reference RM17TG*, RM22TG0 RM17TA*, RM22TA* RM35TM* RM17TU*, RM22TU* RM17UB*, RM35UB* RM22TR* RM17TE00, RM35TF30 RMNF22TB30 RM35AT* RM17UA*, RM22UA* RM22UB* RM22JA* RM35BA10 RM22L*, RM35L* RM35HZ21FM RM35S0MW * Refer to catalog for more details on specific references Confidential Property of Schneider Electric | Page 18 Internal Why Harmony Control Relay? Simple approach to monitor your equipment Comprehensive Monitoring Range Monitor and detect abnormal operating conditions concerning phase, current, voltage, frequency, speed, liquid level, pump and temperature Innovative Design and Features Unique from competitors! · Compact modular sizes (17.5/22.5/35 mm in width) adapted for industrial and building control panels · IP50 lead-sealable protection cover for all conventional model helps prevent dust and unintended human intervention · Dial pointer LED indicator and Diagnostic Button to assist commissioning and troubleshooting · NFC Control Relay for advanced three-phase control at the tip of your finger tips Worldwide Certification Worldwide Availability Distribution centers across many countries in Europe, Americas, China, Asia everywhere in the world for easy procurement and support! Confidential Property of Schneider Electric | Page 19 Internal Terminologies · Positive logic Relay output energized in normal situation; de-energized in abnormal situation · Negative logic Relay output are de-energized in normal situation; energized in abnormal situation · Self powered No need for auxiliary voltage to power the control relay. Energy is obtained directly from the line that the control relay is monitoring · Without memory Relay output will return to the initial state when fault condition(s) is removed · With memory Relay output will maintain the last state after triggered. User needs to power off the device to reset · Hysteresis Refers to "a range" or "bandwidth" . In the case of our control relays, it can be considered as the threshold for the reset function. The hysteresis is necessary for the relay to avoid nuisance tripping. · Window mode Relay checks that the controlled value stays between minimum and a maximum threshold Confidential Property of Schneider Electric | Page 20 Internal Points to note The information provided in this documentation contains general descriptions and/or technical characteristics of the performance of the products contained herein. This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications. It is the duty of any such user or integrator to perform the appropriate and complete risk analysis, evaluation and testing of the products with respect to the relevant specific application or use thereof. Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for misuse of the information contained herein. When devices are used for applications with technical safety requirements, the relevant instructions must be followed. Failure to observe this information can result in injury or equipment damage. © 2021 Schneider Electric. All rights reserved Confidential Property of Schneider Electric | Page 21 Internal Internal
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