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KRIWAN MOTOR PROTECTOR INT69 B2 DIAGNOSIS (22A414S82)
Application
The motor protector INT69 B2 Diagnosis is a further development of the reliable KRIWAN motor protectors. Its supplementary flexible-response protective functions help to improve the availability and extend the service life of a refrigeration system.
The INT69 B2 Diagnosis automatically saves operational and error data in a non-volatile memory. This data can be retrieved on a PC and analysed for diagnosis. The full scope of the diagnosis is achieved by using a KRIWAN-specific AMS sensor. This motor protector is mainly employed on small and medium semi-thermal piston compressors.
Functional description
The temperature monitoring of the motor winding is done with two evalua-tion processes:
• Static: Switch-off is immediate if the nominal response temperature of the built-in AMS or PTC sensors is reached.
• Dynamic: If the temperature increases unusually quickly, the motor is switched off immediately even if the temperature is still far below the nominal response temperature.
This prevents excess temperatures from occurring.
A short circuit at the AMS or PTC input also leads to a switch-off. If the lock-out bridge is installed, errors (with the exception of short circuit) always lead to a locked switch-off. Restarting after locking only after reset.
If the lock-out bridge is not inserted, the compressor can be restarted after it cools down or the error is rectified and a subsequent reset delay. A network restart has to be carried out after the lock-out bridge has been changed. For operation in the specified manner, the supply voltage has to be on permanently on the INT69 B2 Diagnosis.
The INT69 B2 Diagnosis automatically saves operational and error data in a non-volatile memory. This data can be retrieved on a PC and analysed for diagnosis. The full scope of the diagnosis is achieved by using a KRIWAN-specific AMS sensor. This motor protector is mainly employed on small and medium semi-thermal piston compressors.
Functional description
The temperature monitoring of the motor winding is done with two evalua-tion processes:
• Static: Switch-off is immediate if the nominal response temperature of the built-in AMS or PTC sensors is reached.
• Dynamic: If the temperature increases unusually quickly, the motor is switched off immediately even if the temperature is still far below the nominal response temperature.
This prevents excess temperatures from occurring.
A short circuit at the AMS or PTC input also leads to a switch-off. If the lock-out bridge is installed, errors (with the exception of short circuit) always lead to a locked switch-off. Restarting after locking only after reset.
If the lock-out bridge is not inserted, the compressor can be restarted after it cools down or the error is rectified and a subsequent reset delay. A network restart has to be carried out after the lock-out bridge has been changed. For operation in the specified manner, the supply voltage has to be on permanently on the INT69 B2 Diagnosis.
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PRODUCT DETAILS |
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| Application | Small and medium semi-thermal piston compressors |
| Function | Motor temperature static, Motor temperature dynamic, Short circuit, Lock-out |
| Supply voltage | AC 24-230V |
| Permitted ambient temperature | -30...+70°C |
| Temperature measuring circuits: Type | 1-2 AMS sensors in series alternative 1-9 PTC sensors acc. to DIN 44081, DIN 44082 in series |
| Temperature measuring circuits: R_25, total | <1.8kΩ |
| Temperature measuring circuits: R_trip | 4.5kΩ ±20% |
| Temperature measuring circuits: R_trip, static | 4.5kΩ ±20% |
| Temperature measuring circuits: R_reset | 2.75kΩ ±20% |
| Temperature measuring circuits: Max. length connection line | 30m |
| Short circuit monitoring system PTC | Typically <30Ω |
| Input, operating recongnition motor: Lower limit | AC 100V at 20Hz to 175V at 90Hz |
| Input, operating recongnition motor: Upper limit | AC 460V ±15% |
| Operating with frequency converters | Suitable |
| Reset delay: Motor temperature static | 1min ±12s |
| Reset delay: Motor temperature dynamic | 5min ±1min |
| Resetting the lock or the reset delay | Main reset >5s only possible if there is no error current |
| Relay: Connection | AC 240V 2.5A C300 at least AC/DC 24V 20mA |
| Relay: Mechanical service life | Approx. 1 million switching cycles |
| Interface | Diagnose port (DP) |
| Protection class acc. To EN 60529 | IP00 |
| Connection type | Flat plug sleeves (PTC), screw terminals |
| Housing material | PA glass-fibre-reinforced |
| Mounting | Can be snapped onto 35mm standard rail acc. to EN 60715 or screw mounted |
| Dimensions | Refer to dimensions in mm |
| Weight | Approx. 200g |
| Check base | EN 61000-6-2, EN 61000-6-3 EN 61010-1 Overvoltage category II Pollution level 2 |
| Approval | UL File No. E75899 cURus |
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