The slim KRIWAN pump protection relay INT69 EXF2 Diagnostics is suitable for temperature monitoring for a pump that is operated in an Ex zone. The protective relay is installed in a control cabinet outside the EX zone. Two relays provide the necessary operational safety. A button and an external input are available as a reset in the event of an interlocked shutdown of the two relays. The run detection function allows monitoring of operating hours and switching cycles in the internal memory. Monitoring of a service interval is also possible in this way.
| Article number | Supply voltage |
| 20 A 713 P081 | AC/DC 50/60 Hz 24V |
| 22 A 713 P081 | AC 50/60 Hz 100 - 240V |
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The INT69 EXF2 Diagnose is a universal and versatile protection relay. The following inputs and outputs are available for monitoring electrical components:
| Terminals | Inputs and outputs |
| L/L+, N/L- | Supply voltage |
| T1, T2 | Temperature 1 (PTC) |
| T3, T4 | Temperature 2 (bimetal) |
| E+, E- | Leakage (resistance measurement) |
| B1, B2 | Run detection motor |
| X1, X2 | External reset |
| 12, 14, 11 | Relay 1 (temperature*) |
| 22, 24, 21 | Relay 2 (leakage*) |
*Setting ex works
Protection functions and behavior can be flexibly adjusted to the application by parameterization. The INT69 EXF2 Diagnose stores operating and fault data in a non-volatile memory. This data can be read out and evaluated for diagnose. The protective relay is mainly used for the explosion protection of pumps and agitators.
Supply voltage 22 A 713 P081 20 A 713 P081 |
100-240 V ~ 50/60 Hz ±10 % 5 VA 24 V ~/⎓ 50/60 Hz ±10 % 5 VA |
| Permissible ambient temperature Ta | -20°C ≤ Ta ≤ +60°C |
Temperature measuring circuit, bimetal – Type – Contact suitable for – Max. line length |
for an NC contact 24 V ⎓ 20 mA 100 m |
PTC temperature measuring circuit – Type – R25, total – RTriggering, static – RReset – Short circuit monitoring – Break monitoring – Applied voltage – Temperature 1 – Temperature 2 – Max. line length |
1-9 PTC sensors according to DIN VDE V 0898-1-401 in series <1,8 kΩ 4,5 kΩ ±20 % 2,75 kΩ ±20 % <20 Ω >20 kΩ
24 V ⎓ 24 V ⎓ 100 m |
Leakage measuring circuit – Type – Measuring range – Resolution – Accuracy – Applied voltage – Max. line length |
Resistance measurement between electrode pairs 10 k...1 MΩ 1 kΩ ±(1 kΩ + 10 % of the MV) Ca. 5 V ~ 100 m |
Input of internal reset – Type – Contact suitable for – Max. line length |
For one normally open contact 5 V ⎓ 1 mA 30 m |
| Diagnose Port | Diagnose Port (DP) |
Run detection input – Operation with FC – Clock frequency range – Operating frequency range – Phase-phase detection range – Phase zero detection range – Max. line length |
Suitable 2-16 kHz 20-100 Hz 60-480 V ~ +10 % 60-277 V ~ +10 % 3 m |
Reset of lock or restart delay (only possible once any errors have been rectified) – Option 1: – Option 2:
– Option 3: |
Mains reset >5 s (not for temperature inputs) Reset button >1 s leakage Reset button >5 s temperature External reset >1 s leakage External reset >5 s temperature |
Alarm/warning relay – Contact – Rating data (UL/CSA) – Nominal load (ohmic) – Mechanical service life |
Min. 24 V ~/⎓ 20 mA Max. 240 V ~ 2,5 A C300 (NO contact) 240 V ~ 10 A Ca. 1 million cycles |
| Degree of protection as per EN 60529 | IP20 |
Connection type - General |
Tension spring connection (push-in) 0,2-2,5 mm² |
| Housing material | PA 66 GF 30 |
| Fixing | Control cabinet housing (basic grid 22.5 mm), clippable on to 35 mm standard rail as per EN 60715 |
| Dimensions | See dimensions in mm |
Weight – 22 A 713 P081 – 20 A 713 P081 |
Ca. 250 g Ca. 200 g |
| Test regulations | EN 61000-6-2 EN 61000-6-3 EN 61010-1 UL60730 EN ISO 80079-37:2016 Overvoltage category II II (2) G [Ex h db] IIA Degree of pollution 2 |
| Approval | EN ISO 80079-37:2016 |
Compare our products and find the right protection relay for pumps.
| INT69 PYF Diagnose Premium | INT69 YF Diagnose EXTENDED | INT69 YF Diagnose STANDARD | INT69 F Diagnose BASIC | INT69 EXF2 Diagnose BASIC EX | |
| Motor temperature | PTC, Pt100, Pt1000, bimetal | PTC, Pt100, Pt1000, bimetal | PTC, Pt100, Pt1000, bimetal | PTC, Pt100, Pt1000, bimetal | - |
| Temperature 1 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000, bimetal | PTC |
| Temperature 2 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | PTC, Pt100, Pt1000 | - | Bimetal |
| Leakage 1 | Conductance measurement | Conductance measurement, switching input | Conductance measurement, switching input | Conductance measurement | Conductance measurement |
| Leakage 2 | Switching input | Conductance measurement, switching input | Conductance measurement, switching input | - | - |
| Analog input | 0/4 – 20 mA | 0/4 – 20 mA | - | - | - |
| Phase monitoring | Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage | Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage | Phase failure, phase sequence, phase asymmetry, undervoltage and overvoltage | Run detection | Run detection |
Current monitoring | Current transformer | - | - | - | - |
| Power measurement | Apparent, active and reactive power, Cosφ | - | - | - | - |
| Relay 1 | Alarm | Alarm | Alarm | Temperature | Temperature |
| Relay 2 | Warning | Warning | - | Leakage | Leakage |
| 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 | Network reset | Network reset | Network reset | Reset button/ external reset/ network reset | Reset button/ external reset/ network reset |
Supply voltage AC 50 / 60 Hz 100 – 240V | 22 A 721 P081 | 22 A 701 P081 | 22 A 700 P081 | 22 A 712 P081 | 22 A 713 P081 |
Supply voltage AC / DC 50 / 60 Hz 24V | 20 A 721 P081 | 20 A 701 P081 | 20 A 700 P081 | 20 A 712 P081 | 20 A 713 P081 |
Look at the monitoring modules, the options and examples of use of our pump protection relay.
| Monitoring module | Options | Example of use | |
| 1x | Temperature 1 | PTC | Motor temperature sensor |
| 1x | Temperature 2 | Bimetal | Motor temperature sensor, bearing temperature, winding temperature, mechanical seal, etc. |
| 1x | Leakage 1 | Resistance below, exceed resistance | Resistance measurement between leakage electrodes, resistance measurement from leakage electrode to pump housing |
| 1x | Phase monitoring | Run detection | Measuring range phase-phase, measuring range phase-neutral conductor |
| 1x | Relays 1 | Alarm | Shutdown when exceeding limit value or when falling below limit value (e.g. motor temperature, temperature 1, leakage 1, etc.) |
| 1x | Relays 2 | Alarm, warning | Shutdown when exceeding limit value or when falling below limit value (e.g. motor temperature, temperature 1, leakage 1, etc.), Warning when exceeding limit value or when falling below limit value (e.g. motor temperature, temperature 1, leakage 1, etc.) |
| 1x | Interfaces | Diagnostic Port (DP) | Connection of a USB gateway (INT600 DU Gateway) or a Bluetooth gateway (INT600 DB Gateway) to use the INTspector App, Connection of Modbus gateway (INT600 DM Gateway) for retrieval of parameters and integration into the system control |
| 1x | Reset function | Reset button, external reset, mains reset | Resetting the interlocked shutdown as soon as there is no longer an error |
Technical data sheet / operating instructions
Brief instructions
Parameter table
Tender specification
The slim KRIWAN protection relay with EX approvals is used for monitoring temperature with PTC and bimetal. Further functions are a leakage input (conductance measurement), run detection, internal memory, reset button and an external reset input.
You need an end device, such as a laptop, cell phone or tablet with the KRIWAN INTspector App installed and a KRIWAN USB or Bluetooth gateway to establish the connection between INT69 EXF2 Diagnose and end device.
For quick and easy status indication and troubleshooting, a blink code is output via an LED on the front of the protective relay housing. This consists of a cyclic flashing sequence which can be looked up in the data sheet.
For a more detailed view, the KRWIAN INTspector App is available. The diagnostic data provides an overview of the operating behaviour of your pump. Events, operating times, switching cycles and current measured values are displayed and help with detailed analysis on site.
All events such as warnings, errors or messages are stored in a non-volatile internal memory and can be looked at via the INTspector App. The event memory contains the last 100 events with time and date. There are also counters for all events.
The run detection enables monitoring of operating hours and switching cycles in the internal memory. Monitoring of a service interval is also possible that way.
Submersible pumps and agitators, for example, are often already equipped by the manufacturer with moisture electrodes that can be monitored with the INT69 F Diagnose at E-, E+. These have the function of monitoring against penetrating medium or dry running. For this purpose, the resistance (conductance) between the two electrodes is measured. Depending on the application, the operating mode must be set to resistance exceeding or resistance falling below.
A reset button and an external reset input are available when the two relays of the INT69 EXF2 Diagnose are locked out. The relays can be switched back on after a interlocked shutdown following a reset and if there is no longer an error.
The INT69 EXF2 Diagnose has two relays (changeover contacts) which can be flexibly assigned to the inputs. This does not apply to the two temperature inputs, which are always active with relay 1 and can be deactivated when not in use by inserting a resistor at the respective input. The limit values of the two temperature inputs are fixed for safety reasons. Additional monitoring functions can be flexibly assigned to relays 1 and 2 via parameterization using the INTspector App. If an error or warning (leakage input) is detected, the associated relay switches off. The two relays operate according to the closed-circuit current principle.
To integrate the KRIWAN protection relay into your control system, you need an INT600 DM Gateway that converts the pump operating data into a Modbus protocol (Modbus RTU).
The packaging contains the protection relay (depending on the voltage variant AC/DC 24V or AC 100-240V) and the data sheet / operating instructions. In addition, two resistors for deactivating the temperature inputs are included in the scope of delivery.
All KRIWAN protection relays are delivered with a factory setting. The INT69 EXF2 Diagnose can be found on the product page in the download area as a parameter list. The parameterization can be individually adapted to your application during installation and commissioning using the KRIWAN INTspector App.
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.
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