With the multifunctional relays for machines, the KRIWAN portfolio offers comprehensive monitoring protection for application areas with increased protection requirements. Among the multifunctional relays are protective relays designed for the special environmental requirements of the water and wastewater industry.
KRIWAN relied on the proven diagnose function, which allows the user to evaluate device and operating data. With the integrated Diagnose Port and the INTspector app developed by KRIWAN, individual parameterization of the monitoring functions is possible.
Water and wastewater industry
Multifunctional relays designed for the special requirements of the water and wastewater industry.
To the industry solutionsFor the special requirements of the water and wastewater industry, KRIWAN has developed a product portfolio of multifunctional relays for pumps.
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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: | Phase-neutral conductor: |
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 |
On our product pages you will find detailed information on the technical features of our multifunctional relays as well as an extensive download area.
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.
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).
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.
You need a laptop, mobile phone or tablet (Windows 10, Android or iOS) 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.
In the packaging is the respective protection relay and the brief instructions. With the products INT69 PYF Diagnose and INT69 EXF2 Diagnose, terminating resistors are also included in the scope of delivery.
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.
The KRIWAN protection relays can be integrated into your control system via the ModBus RTU protocol. No additional hardware is required for the INT69® PYF PREMIUM, all other devices are connected via an INT600 DM gateway .
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.
The DataMatrix code is based on DIN Spec 91406 and is a composition of the code from the KRIWAN URL + part number + serial number and is therefore unique. When scanning the Data Matrix code, the user gets direct access to the product page.
We are happy to help you with your questions. Simply use the contact form on our homepage and send us a request. Our customer support will get in touch with you.