Water and wastewater industry

KRIWAN protection relays for water and wastewater management

The demands from the water and wastewater industry are constantly increasing. Extensive monitoring of the lifting and conveyor systems is essential for process reliability. The KRIWAN protection relays for pumps support your plant system in the acquisition of operationally relevant data and their integration into the system controller.

The individual parameterization of the KRIWAN protection relays for pumps enables them to be used in various areas of application in the water and wastewater industry. The range of KRIWAN protection relays can cover the various requirements for protection and monitoring technology for your pumps.

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 Take a look into the future of protection relays!

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Our solution: Smart protection relays for pumps

KRIWAN protection relays provide a reliable and user-friendly solution for protecting and monitoring pumps, pump systems and submersible mixers in the water and wastewater industry. An internal memory records measured values and operating data of the pump. This data can be retrieved at any time on site via a digital interface using the INTspector app or worldwide by integrating them into the overall system controller.

INTSpector app

KRIWAN INTspector app

The KRIWAN INTspector app enables fast and targeted error and status diagnosis on site. You connect the KRIWAN protection relay to the app via a gateway (Bluetooth gateway or USB gateway) and can thus access all the important operating data of your pump and parameterize the sensor inputs.

You can use the app for the following functions:

  • Diagnostic data
  • PDF report
  • Data sheets
  • Enter flashing code
  • Change parameters
  • Send file

Change parameters

In the parameterization mode you can set the protection relay perfectly to your application. You can adjust the following parameters individually:

  • Switching frequency
  • Reset delay
  • Motor temperature
  • Temperature
  • Leakage
  • Phase monitoring
  • Analog input
  • Service interval
  • Undervoltage and overvoltage monitoring

Diagnostic data

The diagnostic data function provides an overview of the operating behavior of your pump. Events, operating times, switching cycles and current measured values ​​are stored in an internal memory and help with detailed analysis on site.

This gives you detailed information about

  • Motor status
  • Motor temperature
  • Leakage monitoring
  • Supply voltage
  • Operating time

You can also call up the event list and carry out a live diagnosis.

Live Diagnose

With the help of the live diagnosis, all measured sensor data can be tracked in real time and recorded over a longer period of time. This function supports you in the detailed error analysis on site and enables you to assess the current condition of your pump more precisely.

The following sensor signals can be called up live:

  • Motor temperature
  • Temperature
  • Leakage
  • Analog input

Continuous monitoring

It is important for the operator that the pump runs smoothly. Damage and failures are avoided by providing information on the condition of the pump at an early stage and taking countermeasures. With the complete solution from KRIWAN consisting of protection relays, Modbus gateway for networking and the INTspector app for parameterization, the condition of the pump is continuously monitored and automatically switched off before damage or failure occurs. This enables reliable and efficient plant operation.

Why use a KRIWAN protection relay for pumps?

KRIWAN offers a complete solution from the protection relay, to the gateway for networking, to the INTspector app for parameterization: easy to implement, flexible and scalable, enabling you to perform condition monitoring for reliable and efficient system operation. This is the only way to increase the efficiency and service life of machines and systems.

The right protection relay for every pump

To the product pages
 

INT69® PYF Diagnose PREMIUM

INT69® YF Diagnose EXTENDED

INT69® YF Diagnose STANDARD

INT69® F Diagnose BASIC

INT69® EXF2 Diagnose BASIC EX

Motor temperature The motor temperature is monitored with different sensors or a bimetal. PTC, Pt100, Pt1000, bimetal PTC, Pt100, Pt1000, bimetal PTC, Pt100, Pt1000, bimetal PTC, Pt100, Pt1000, bimetal -
Temperature 1The temperature (e.g. bearing temperature) is monitored with different sensors. PTC, Pt100, Pt1000 PTC, Pt100, Pt1000 PTC, Pt100, Pt1000 PTC, Pt100, Pt1000, bimetal PTC
Temperature 2The temperature (e.g. bearing temperature) is monitored with different sensors. PTC, Pt100, Pt1000 PTC, Pt100, Pt1000 PTC, Pt100, Pt1000 - bimetal
Leakage 1 The leakage is monitored via the measured resistance. If the value falls below or exceeds a parameterized limit value, the pump is automatically switched off. The leakage can also be monitored using a switching input. In the case of pumps, this is usually a float switch that functions as an opener or closer.

Conductance measurement

Conductance measurement, switching input

Conductance measurement, switching input Conductance measurement Conductance measurement
Leakage 2 The leakage is monitored via the measured resistance. If the value falls below or exceeds a parameterized limit value, the pump is automatically switched off. The leakage can also be monitored using a switching input. In the case of pumps, this is usually a float switch that functions as an opener or closer. Switching input

Conductance measurement, switching input

Conductance measurement, switching input

- -
Analog input Any 4-20 mA signal from an external sensor can be read in via the analog input. If the value falls below or exceeds an adjustable switching point, the pump is automatically switched off. 0/4 – 20 mA 0/4 – 20 mA - - -
Phase monitoring The phase monitoring includes the monitoring functions phase sequence, phase failure, phase asymmetry, overvoltage and undervoltage.

Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage, run detection

Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage, run detection

Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage, run detection

Run detection Run detection
Measuring range Measuring range for phase monitoring or running detection. Phase-phase:
3 AC 20 – 100 Hz, 100 – 690 V
Phase-phase:
3 AC 50 / 60 Hz, 100 – 690 V
Phase-phase:
3 AC 50 / 60 Hz, 100 – 690 V

Phase-neutral conductor:
AC 20 – 100 Hz, 60 – 277 V
Phase-phase:
AC 20 – 100 Hz, 60 – 480 V

Phase-neutral conductor:
AC 20 – 100 Hz, 60 – 277 V
Phase-phase:
AC 20 – 100 Hz, 60 – 480 V

Current monitoring If a current transformer is connected, the current of phase L1 is monitored for overcurrent or undercurrent. When the set limits are reached, the warning or alarm relay switches off. Current transformer INT185 - - - -
Power measurementWith connected phasse and current transformer, converted active, reactive and apparent power are displayed. The Cosφ monitoring can be set to exceed or falling below and the warning or alarm relay switches off when the adjustable limits are reached.

Apparent, active and reactive power, Cosφ

- - - -

Relay 1 Relay 1 is an alarm relay or a temperature relay that switches off the pump or motor in the event of a fault.

Alarm Alarm Alarm Temperature Temperature
Relay 2 Relay 2 is a warning relay or a leakage relay that issues warnings. Warning Warning - Leakage Leakage
Interfaces The diagnostic port (DP) and Modbus RTU (RS485) are availiable as interfaces. The diagnostic port is used to output the diagnostic data and to parameterize the protection relay. The protection relay is integrated into the system control via the Modbus RTU interface. Diagnostic port (DP)
Modbus RTU (RS485)
Diagnostic port (DP) Diagnostic port (DP) Diagnostic port (DP) Diagnostic port (DP)
Housing width 45mm 45mm 45mm 22.5mm 22.5mm
Reset function The reset function is used to reset the interlocked shutdown or the restart delay. A reset can be carried out by means of mains reset, the reset button on the housinge of the protection relay or an external reset. Network reset Network reset Network reset

Reset button/ external reset/ network reset

Reset button/ external reset/ network reset

The most frequently asked questions about our protection relays for pumps

What distinguishes KRIWAN pump protection relays from standard solutions on the market (relays)?

KRIWAN protection relays offer a reliable, user-friendly and digital solution for the protection and monitoring of pumps, pump systems and submersible motor agitators. An internal memory records measured values and operating data of the connected sensors. These can be called up via digital interface at any time on site with the KRIWAN INTspector app or worldwide through integration into the higher-level system control. The large number of inputs and outputs can be parameterized individually for each application. For example, the temperature inputs can be selected between PTC, Pt100, Pt1000 and bimetal. If an input is not used, it is deactivated by parameterization.

Which variants of KRIWAN protection relays are available for the water and wastewater industry?

For the water and wastewater industry, KRIWAN offers the Premium, Extended, Standard, Basic and Basic Ex protection relays, each with 2 different power supplies (AC/DC 24V and AC 100-240V). The variants differ in terms of functionality (see product overview).

What is the default setting of the KRIWAN pump protection relays?

All KRIWAN pump protection relays are supplied with a factory setting. These can be found on the respective product page in the download area as a parameter list. The parameterization can be individually adapted to your application during installation and inspection with the help of the KRIWAN INTspector app.

What do I need to parameterize the KRIWAN protection relay and read out the diagnostic data?

You need a laptop, mobile phone or tablet with an installed KRIWAN INTspector app and a KRIWAN USB or Bluetooth gateway to establish the connection between the protection relay and the end device.

What is included in the scope of delivery of the KRIWAN protection relays for pumps?

In the packaging is the respective protection relay and the  brief instructions with safety instructions, connection diagram and notes on further documents. With the products INT69 PYF  Diagnose and INT69 EXF2  Diagnose,  terminating resistors are also included in the scope of delivery.

How do I recognize the current status (operating status) of the KRIWAN protection relay?

For quick and easy status indication and troubleshooting, a flashing code is  signaled via an LED on the front of the housing of the protective relays. This consists of a cyclic flashing sequence which can be taken from the data sheet. The KRWIAN INTspector app is available for a more detailed view. The diagnosis data provides an overview of the operating behavior of your pump. Events, operating times, switching cycles and current measured values are displayed and help with detailed analysis on site.

How do I integrate the KRIWAN protection relays into the higher-level system control?

In order to integrate the KRIWAN protection relays into your system control, you need an INT600 DM gateway that converts the operating data of the pump into a Modbus protocol (Modbus RTU). The Modbus RTU interface for direct connection to the plant control system is already integrated in the INT69® PYF PREMIUM. An additional Modbus gateway is not necessarily required here.

In addition to the protection relays, does KRIWAN also offer the associated sensors?

Sensors are usually already installed by the manufacturers of motors, pumps, systems, etc. The existing sensors can be connected to the KRIWAN pump protection relay. 

Who can I contact if I have any questions or problems with the KRIWAN INTspector app?

We are happy to help you with questions and problems about the INTspector app. You can submit a support request via the KRIWAN INTspector app. You also have the option of sending us an inquiry via our contact form. To do this, please select "INTspector App" under subject. Our customer support will review your request and contact you.

You have further questions? Our experts will be pleased to advise you!

 

Mathias Stratyla

Market Manager

+49 (0) 79 47 - 8 22 - 0
sales@kriwan.de