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RM22- Zelio Control

The Near Field Communication (NFC) control relay is designed to monitor the following functions in 3-phase power networks and upon detection of faults, the relay contacts can be opened or closed with or without a set timing period.

  • Sequence of phases (L1, L2, L3, N) 
  • Phase loss 
  • Asymmetry 
  • Undervoltage 
  • Overvoltage 
  • Under-frequency 
  • Over-frequency

NFC control relay provides simplified product selection and inventory management. It monitors 3-phase or 3-phase + neutral networks with 4 indication LEDs that display exact faults occurred during the process. 

The mobile app, Zelio NFC, is Android enabled and can be downloaded onto your phone from Google Play. With this mobile app, accurate parameter settings can be achieved and the 2 relay outputs can be individually configured.

RMNF22

Applications

  • Control against reverse motor operation (lifting, handling, elevators, escalators, etc.) 
  • Control of sensitive 3-phase supplies 
  • Emergency power supply switching in abnormal conditions 
  • HVAC and pumping control panels

Description

RMNF22

1. Pairing Indication LED
2. Phase Loss (PL) fault indication LED (Red continuous) or Phase Sequence (PS)
fault indication LED (Red blinking)
3. Undervoltage (UV) fault indication LED (Red continuous) or Overvoltage (OV) fault indication LED (Red blinking)
4. Asymmetry (Asym) fault indication LED (Red continuous)
5. Under-frequency (UF) fault indication LED (Red continuous) or Over-frequency (OF) fault indication LED (Red blinking)
6. Output 2 indication LED (Amber)
7. Output 1 indication LED (Amber)
8. Power Supply indication LED (Green)
9. NFC antenna location

RMNF22_desc

NFC control relay mobile application

With the Zelio NFC app installed on your mobile device, you can retrieve/configure and lock/unlock the product settings, and diagnose product status. The related function diagrams, wiring diagrams, and Quick Start Guide can be obtained from the app.

They feature:

  • Read, write, clone settings 
  • Easy auto-configure settings 
  • Configuration of up to 10 alarms with different monitoring functions 
  • Alarm combination with logic (AND, OR, NOT) for relay output 
  • User-defined positive & negative logic (relay output)
  • Simulator to check logic validity in alarm combination 
  • Diagnose feature for displaying historical faults through event logging 
  • Share settings via multiple channels depending on the phone (email, WhatsApp, etc.) 
  • Secured with password protection
RMNF22_desc_2

Operating Principle

RMNF22

Phase loss + Phase sequence

RMNF22_diagram_1
RMNF22_diagram_legend

The relay monitors its own supply voltage Un:

  • Correct sequence of three phases 
  • Phase loss of at least one of the three phases 
  • Phase loss or phase sequence values can be set individually using the app. 
  • If a sequencing or phase loss fault is detected, the relay output opens or closes based on user Alarm settings in the app.

Undervoltage + Overvoltage

RMNF22_diagram_3
RMNF22_diagram_legend

The relay monitors its own supply voltage Un:

  • Under Voltage or Over Voltage
  • An adjustable time delay on threshold crossing provides immunity to transients, and helps prevent spurious triggering of the output relay.
  • If a voltage fault is detected, the relay opens or closes at the end of time delay set as On-delay or Off-delay by the user through the app.

Asymmetry

RMNF22_diagram_4
RMNF22_diagram_legend

The relay monitors its own supply voltage Un:

  • Asymmetry
  • If a frequency value exceeding the threshold is detected, the relay opens or closes at the end of the time delay set as On-delay or Off-delay by the user through the app.

Under-frequency + Over-frequency

RMNF22_diagram_2
RMNF22_diagram_legend

The relay monitors its own supply voltage Un:

  • Under-frequency or Over-frequency
  • If a frequency value exceeding the threshold is detected, the relay opens or closes at the end of the time delay set as On-delay or Off-delay by the user through the app.

Alarm combination using Boolean logic

With Zelio NFC App, it is possible to combine different alarms using AND, OR and NOT logic to form unique monitoring combinations for each of the relay outputs. A Simulator is also available to verify the validity of the overall logic.

Multifunction 3-phase control relays –
RM22TA, RM22TU, RM22TR, and RM22TG

RM22 multifunction Harmony control relays monitor the following functions on 3-phase supplies:

RM22T_func

Depending on the model, RM22T●●● control relays:

  • Accept different nominal 3-phase voltages: up to 480 V  
  • Monitor their own power supply measured as a true RMS value (except RM22TG) 
  • Are designed for clip-on mounting on a rail

They feature a:

  • Sealable cover to help protect the settings 
  • Diagnostic button for load circuit testing 
  • Relay output status LED 
  • Fault detection indication LED 
  • Dial pointer LED indicator for relay power ON status 
  • Relay output On-delay or Off-delay
RM22TOOO

Applications

  • Control for connection of moving equipment (site equipment, agricultural equipment, refrigerated trucks) 
  • Control against reverse motor operation (lifting, handling, elevators, escalators, etc.) 
  • Control of sensitive 3-phase supplies 
  • Emergency power supply switching in abnormal conditions
RM22TA_desc
RM22TR_desc
RM22TG_desc
RM22TU_desc

Description

1a. Voltage range selector switch

1b. Voltage range/On-Off delay selector

2. Time delay adjustment potentiometer Tt

3a.  Asymmetry threshold setting potentiometer Asym

3b. Undervoltage setting potentiometer <U

3c. Overvoltage setting potentiometer >U

4. Diagnostic button

Operating Principle

Multifunction 3-phase supply control relays monitor:

  • Product being powered by L1 and L3 
  • Correct sequencing of phases L1, L2, and L3 
  • LED indication for relay output status and fault detection (except phase disconnection) 
  • Phase loss, including in the case of voltage regeneration
  • Undervoltage from – 2…- 20% of the supply voltage Un 
  • Overvoltage from 2…20% of the supply voltage Un
  • Asymmetry from 5…15% of the supply voltage Un

Voltage switch operation:

  • Set the switch to 3-phase supply voltage Un. 
  • The position of this switch is taken into account on energization of the device.
  • If the switch position is changed while the device is operating, all the LEDs flash but the product continues to operate normally with the voltage selected at the time of energization preceding the change of position.
  • If the switch is returned to the original position selected prior to the last energization, the LEDs return to their normal state.

RM22TA

Phase + Asymmetry

RM22TA_diagram

The relay monitors its own supply voltage Un:

  • correct sequence of three phases 
  • phase loss of at least one of the three phases (U measured < 150 V (RM22TA31) and < 250 V (RM22TA33)) 
  • asymmetry adjustable from 5…15% of Un 
  • If a sequencing or phase loss fault is detected, the relay opens instantly. 
  • If an asymmetry fault is detected, the relay opens at the end of the time delay set by the user. 
  • On energization of the device with a detected measured fault, the relay stays open.

RM22TU

Phase + Undervoltage

RM22TU_diagram_1
RM22TU_diagram_2

The relay monitors its own supply voltage Un:

  • correct sequence of the three phases 
  • phase loss of at least one of the three phases (U measured < 150 V (RM22TU21) and < 250 V (RM22TU23)) 
  • undervoltage adjustable from – 2…- 20% of Un 
  • If a sequencing or phase loss fault is detected, the relay opens instantly. 
  • If a voltage fault is detected, the relay opens instantly. 
  • On energization of the device with a detected measured fault, the relay stays open.

RM22TR

Phase + Undervoltage/overvoltage

RM22TR_diagram_1
RM22TR_diagram_2

The relay monitors its own supply voltage Un:

  • phase loss (U measured <150 V (RM22TR31) and < 250 V(RM22TR33))
  • undervoltage and overvoltage 
  • An adjustable time delay on threshold crossing provides immunity to transients, and helps prevent spurious triggering of the output relay. 
  • If a voltage fault is detected, the relay opens at the end of the time delay set as On-delay or Off-delay by the user. 
  • On energization of the device with a detected measured fault, the relay stays open. 
  • In the event of phase loss, the relay opens instantly

RM22TG

Phase control

RM22TG_diagram

The RM22TG relay monitors:

  • correct sequencing of the three phases
  • total loss of two or more of the three phases
  • When the phase sequence and voltages are correct (> 183 Va), the output relays are closed and the R LED is on.
  • When there is a sequencing fault or total loss of two or more phases (detected as soon as one of the voltages drops below 100 V) the relay opens instantly and the R LED goes off.
  • On energization of the device with a detected measured fault, the relay stays open

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