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Logic Control

Logic Control

General Purpose Relays CR420

Plug-In Relays

Application
The CR420 general purpose plug-in relays are commonly used for low cost switching in many industrial control circuits. Typical applications include industrial equipment, machine tool, HVAC, lighting, vending, commercial appliances, elevators, and spa controls.

 

These relays and sockets are powerful and highly cost effective. Versions are available with AC and DC coils, plug-in or direct flange mounting, and multiple contact configurations.

 

Features

  • Cost Effective: Competitive every day prices make these relays an excellent solution for low voltage industrial switching.
  • Powerful: From 5 Amp (4 pole) to 30 Amp (1 pole), these relays handle large loads in a compact package.
  • Reliable Operation: 100% tested, ensuring performance the first time. The long electrical life will give confidence and satisfied customers.
  • Mechanical Indicator/Manual Operator: Helps field service personnel test control circuits.
  • LED Indicating Lamp: Easily show coil status under low light conditions.
  • IP20 Finger-Safe Sockets: Protects users from screws during ter mination.

 

Product Number Selection Instructions
Specify a complete product number by including coil suffix in place of *, see coil suffix table for coil codes. Please consult factory if desired product configuration does not appear.

 

IEC Electronic Timers

Multivoltage Electronic Timers

NMTCV Delayed ON Timer
Electronic relay whose output contact connects with a certain adjustable delay from the moment voltage is applied to supply terminals A1-A2. It has four timing ranges: see drawing. Range selection is made by dip-switches located on the front of the relay. Times are set by front potentiometer controlling an Application Specific Integrated Circuit (ASIC) specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

NMTCIV Delayed ON Timer with Instantaneous Contact
Electronic relay with two output contacts. One contact connects instantly when voltage is applied to the supply terminals A1-A2 and the other connects with a certain adjustable delay. It has four timing ranges: see drawing. Range selection is made by dip-switches located on the front of the relay. Times are set by front potentiometer controlling an ASIC specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

NMICV Impulse ON Timer
Electronic relay whose output contact connects when voltage is applied to supply terminals A1-A2. It goes back to stand-by after a preset time. It has four timing ranges: see drawing. Range selection is made by dip-switches located on the front of the relay. Times are set by front potentiometer controlling an Application Specific Integrated Circuit (ASIC) specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

NMETV Star-Delta Starter Timer
Electronic relay timed in steps whose purpose is to control star-delta starting. When supply voltage is applied to the A1-A2 terminals, the star contact (17-18) closes for an adjustable time between 6 and 60 sec. (selectable). When this time is up, it opens, there is a pause and then the delta contact connects (17-18). The standard pause time is about 100ms. Times are set by front potentiometer controlling an ASIC specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

NMRDV Delayed OFF Timer
Electronic relay whose output contact instantly connects when supply voltage is applied to terminals A1-A2. It disconnects with an adjustable delay from the moment the relay loses supply voltage.There are several types depending on the range of timers. There are several types depending on the range of timers.

 

NMTDV Delayed OFF Through Contact Timer
Electronic relay whose output contact connects instantly when connecting the Y1-Y2 terminals with a voltage-free control. It disconnects with an adjustable delay when the terminals are disconnected. The relay must be supplied with nominal voltage between A1-A2. Loss of supply voltage causes immediate disconnection. It has timing ranges: see drawing. Range selection is made by dip-switches located on the front of the relay. Times are set by front potentiometer controlling an ASIC specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

NMIFV Symmetric Intermittence Timer
Electronic relay whose output contact connects and disconnects intermittently with a symmetric cycle (connection and pause times are the same). It has six ranges: see drawing. Range selection is made by dip-switches located on the front of the relay. Times are set by front potentiometer controlling an ASIC specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

NMIVV Asymmetric Intermittence Timer (started by Connection or Pause-Choice)
Electronic relay whose contact connects and disconnects intermittently. Connection and pause times may be set separately. The intermittency cycle begins with a connection or pause selected by dip-switch and starts the instant connection is made from supply voltage to the A1-A2 terminals. A new step is begun if voltage supply is interrupted during operation. It has four timing ranges: 0.6 sec. - 100 hrs. Range selection is made by dip-switches located on the front of the relay. Times are set by front potentiometer controlling an ASIC specially designed for this group of relays. This allows for excellent precision and repeatability features.This allows for excellent precision and repeatability features.

 

NMMFV Multifunction Timer
The functions of this multifunction and multirange electronic relay are selected by 3 dip-switches located on the front of the relay. It has eight functions:

  • Delayed ON timer
  • Delayed ON through contact timer
  • Delayed OFF through contact timer
  • Delayed ON and OFF through contact timer
  • Impulse ON timer
  • Impulse ON through contact timer
  • Impulse OFF through contact timer
  • Impulse ON and OFF through contact timer

 

If the relay loses current during timing, it disconnects and is ready for a new cycle. It has four timing ranges: see drawing. Times are set by front potentiometer controlling an ASIC specially designed for this group of relays. This allows for excellent precision and repeatability features.

 

IEC Protective Relays

DINIL-02 Liquid Level Detector Relays

DINIL-02E Liquid Level Detector Plug-in Relays

 

DINIL-02 and DINIL-02E are devices to control levels of conductive liquids which perform the following functions:

 

Filling control: The contact between 11-14 (DINIL-02) or 1-3 (DINIL-02E) closes when the tank to be checked drops below a minimum, fixed by the position of probe Z23 (DINIL-02) or probe 6 (DINIL-02E), which starts up the pumping system. When the maximum filling level is reached, fixed by the position of probe Z22 (DINIL-02) or probe 7 (DINIL-02E), the contact between 11-14 (DINIL-02) or 1-3 (DINIL-02E) opens and the pumping system stops.

 

Draining control: The contact 11-14 (DINIL-02) or 1-3 (DINIL-02E) closes if the level liquid goes above a maximum (fixed by the position of probe Z12 (DINIL-02) or probe 9 (DINIL-02E), which starts up the drain pumping system. When the level drops below a minimum, fixed by the position of probe Z13 (DINIL-02) or probe 8 (DINIL-02E), the contact 11-14 (DINIL-02) or 1-3 (DINIL-02E) opens and stops the pumping system, which prevents the pump from losing its prime.

 

Simultaneous filling and draining control: The system starts up whenever the tank requires liquid and the well has sufficient level to supply it. The system stops when the liquid reaches its maximum level in the tank or when the well reaches its minimum level.

 

Note: In all the above applications, the contact between 11-14 (DINIL-02) or 1-3 (DINIL- 02E) is used as a permanent contact for starting and stopping the pump starter, whether it is direct-on-line, star-delta or any other type of starter.

 

DINIL-03 Liquid Level Detector Relays

DINIL-03E Liquid Level Detector Plug-in Relays

 

DINIL-03 and DINIL-03E are devices to control levels of conductive liquids. They can control the pump-in and pump-out of wells or tanks, but not both simultaneously. They are similar to DINIL-02 / DINIL-02E. The contact 11-14 (DINIL-03) or 1-3 (DINIL-03E), makes if the level is above or equal to the level fixed by prove Z2 (DINIL-03) or probe 9 (DINIL-03E), and breaks if the level falls below the level fixed by probe Z3 (DINIL-03) or probe 8 (DINIL-03E).

 

Filling control: The contact 11-12 (DINIL-03) or 1-4 (DINIL-03E) is used for permanent control of the start of the pump.

 

Draining control: The contact 11-14 (DINIL-03) or 1-3 (DINIL-03E) is used for permanent control of the pump starting.

 

Note: The “common” probe must be slightly lower than the “low level” probe and can be connected to the well or tank frame if it is metallic. Sensitivity is adjusted by means of a front potentiometer, and its adjustment position depends on liquid resistivity.

 

RPDF Unbalance and Phase Failure Relays
The RPDF-electronic relay is intended for the protection of lines or electronic motors against unbalance between phases or failure of one or more phases. Detection of unbalance or phase failure is done by measuring phase change and not by voltage levels. This guarantees proper operation even when there are return paths due to motors running which are connected to the main network to be protected.

 

The relay is made when all conditions are normal (contact 11-14 closed); the contacts open in the event of a failure. In this way, any failure, including that of the relay supply voltage, will cause disconnection and prevent the supply from being left unprotected.

 

RSFF Phase Sequence and Phase Failure Relays
The RSFF relay is designed to detect phase sequence errors and/or phase failures in three phase lines by measuring the three phase voltage angle and amplitude. An external potentiometer is used to adjust the level of acceptable unbalance (2.5% to 10.0%).

 

RMM 2 Maximum and Minimum Voltage Protection (Three Phase) Relays
These voltage-sensitive relays with two selectable output contacts remain closed (contact between 11-14 or between 21-24) when voltage is within tolerance limits, and open when voltage surpasses these limits. The relays can be used to detect low or over voltage in balanced single or three-phase systems, and maximum and minimum tripping values are adjustable by means of two potentiometers.

 

RS01N Thermistor Relays
This thermal probe relay is sensitive to the resistance of several thermal probes (thermistors, RTD) connected to P1 and P2 and defects overheating in motor windings, transformers, etc.

 

The relay disconnects when probe resistance exceeds 2500 ohms and cannot reset until resistance is lower than 1500 ohms. The absence of control voltage to the A1 and A2 terminals causes the relay to trip. When the relay trips due to motor overheating it can be reset either manually, automatically or remotely.

 

The RS01N detects those cases of shortcircuited probe cables (resistance lower than 20 ohms) or cut probe cables (resistance higher than 2.5 k ohms). The resistance at 77°C of the probe circuit must be within a range of 40 to 600 ohms.

 

RSR1 Adjustable Thermistor Relays
This relay has been designed for temperature control by type PT100 temperature probes.

 

The relay is normally ON (contacts 11-14 closed). The relay turns OFF (1) when the detected temperature exceeds the threshold value, (2) if the probe wires are cut or (3) if the control voltage is interrupted.

 

RCF-1 Frequency Control Relays
The frequency control relay is sensitive to the frequency of the signal applied to terminals B1 and B2. The output contacts close when the frequency falls below the selected threshold (adjustable by potentiometer).

 

There are three frequency setting ranges: 5-15 Hz, 15-45 Hz, 45-135 Hz. Switching is independent of the input signal’s amplitude being monitored at B1-B2. The signal’s wave form can be sinusoidal, square, triangular, etc. This relay is suitable for suppression of rotor resistance in slip-ring asynchronous motor starters, speed reversal detector in wound rotor motors and frequency control in generating sets.