7 Condition Monitoring

Transcription

1 Pressure switch /PS Condition Monitoring.1 Pressure switch /PS All gear units with pressure lubrication are equipped with a pressure switch for function monitoring. The pressure switch is to be connected and integrate into the system in such a way that the gear unit can only be operated with the oil pump building up pressure. A short-term compensation (max 10 s) during startup is permitted. Customers are responsible for the electrical connection and the evaluation of the signal Ø 34.4 SW G 1/4" 65695AXX Electrical connection P AXX [2] NC contact [4] NO contact Technical data Pressure 0.5 ± 0.2 bar Maximum switching capacity 4 A - AC 250 V; 4 A - DC 24 V Plug connector DIN EN The tightening torque for the retaining screw in the back of the plug connector for electrical connection is 0.25 Nm. 132 Catalog Helical and Bevel-Helical X.. Series Gear Units

2 PT100 temperature sensor.2 PT100 temperature sensor The PT100 temperature sensor can be used to measure the temperature of the oil in the gear unit. The temperature sensor is located in the gear unit's oil sump. The exact position depends on the gear unit version and position of the shaft. Ø8 A 24 PG9, PG11 35 G1/ AXX Sizes A [mm] X X X X Electrical connection AXX / [2] Resistor element connection Technical data Design with thermometer pocket and changeable measuring insert Sensor tolerance [K] ± ( T), (corresponds to DIN IEC 51 class B), T = Oil temperature [ C] Plug connector DIN PG9 (IP65) The tightening torque for the retaining screw in the back of the plug connector for electrical connection is 0.25 Nm. Catalog Helical and Bevel-Helical X.. Series Gear Units 133

3 Temperature switch /NTB.3 Temperature switch /NTB A temperature switch with fixed switching temperatures of 0, 80, 90 or 100 C is used for monitoring the oil temperature of the gear unit. The temperature switch is normally used for the following functions: Early warning at 0 C or 80 C Stopping the main motor of the gear unit at 90 C or 100 C To guarantee a long service life and functioning under all conditions, it is recommended to use a relay in the power circuit instead of a direct connection through the temperature switch. The temperature switch is located in the gear unit's oil sump. The exact position depends on the gear unit version and position of the shaft G1/2 Ø AXX Cable clamp Electrical connection [2] [3] 53AXX and [3] NC contact (without vacuum) [2] Grounding terminal 6.3 x 0.8 Technical data Switching accuracy ± 5 K Maximum switching capacity 1 A - AC 240 V Plug connector DIN PG9 (IP65) The tightening torque for the retaining screw in the back of the plug connector for electrical connection is 0.25 Nm. 134 Catalog Helical and Bevel-Helical X.. Series Gear Units

4 Temperature switch /TSK.4 Temperature switch /TSK The TSK temperature switch is used with oil supply systems for circulation cooling. It is provided with two fixed switching points (40 C and 90 C) for controlling and monitoring the system. The temperature switch is integrated in the oil supply system circuit as follows: The cooling system is activated when the oil temperature reaches 40 C Warning signal or disconnection of the gear unit when the oil temperature exceeds 90 C (usually an indication of a malfunction of the oil supply system) To guarantee a long service life and functioning under all conditions, it is recommended to use a relay in the power circuit instead of a direct connection through the temperature switch. The temperature switch is located in the gear unit's oil sump. The exact position depends on the gear unit version and position of the shaft. L= Ø20 G3/4 SW AXX Electrical connection TKS 40 C 1 2 TKÖ 90 C 3 PE 65699AXX [2] Switch 40 C NO contact [3] Switch 90 C NC contact PE Grounding terminal Technical data Switching temperatures: 40 C and 90 C Contact capacity: 2 A - AC 240 V Plug connector: DIN EN PG11 (IP65) The tightening torque for the retaining screw in the back of the plug connector for electrical connection is 0.25 Nm. Catalog Helical and Bevel-Helical X.. Series Gear Units 135

5 DUO10A diagnostic unit (oil aging).5 DUO10A diagnostic unit (oil aging) The DUO10A diagnostic unit was developed for advance planning of oil changes. The diagnostic unit consists of a PT100 temperature sensor and an evaluation unit. The temperature sensor installed in the gear unit measures the present gear unit oil temperature. The diagnostic unit calculates the estimated remaining service life for the gear unit oil based on the measured oil temperature. This calculated value is continuously shown on the evaluation unit's display; when needed, the display can be changed to the current gear unit oil temperature. The oil types used by SEW are recorded in the evaluation unit, wherein a type of oil approved by SEW-EURODRIVE can be customized. Oil grades: Oil grade Designation Temperature limit Mineral oil CLP/ Bio oil OIL1 100 C Synthetic oil CLPHC/CLPPAO OIL2 130 C Polyglycol CLPPG OIL3 130 C Food grade oil OIL4 100 C Customer-specific OIL5 Default setting = OIL1 Four switching outputs (NC/NO) with the following functions are available to connect the evaluation unit: Early warning: Is set a few days before expiration of the remaining service life. The number of days can be set directly on the evaluation unit. Main alarm: Is set when the estimated remaining service life reaches zero. Limit temperature: Shows when the permitted oil temperature has been exceeded. Ready for operation: Displays errors in the wiring and recognizable faults in the evaluation unit. INFORMATION For more information on the evaluation unit and accessories, refer to the "DUO10A Diagnostic Unit" manual, publication no Catalog Helical and Bevel-Helical X.. Series Gear Units

6 DUO10A diagnostic unit (oil aging) M12x1 G½ 16,5 M12x AXX Mounting examples 24 V DC 61016AXX DUO10A diagnostic unit Catalog Helical and Bevel-Helical X.. Series Gear Units 13

7 DUV30A diagnostic unit (vibration diagnostics).6 DUV30A diagnostic unit (vibration diagnostics) The DUV30A diagnostic unit provides a vibration analysis value, in which it uses frequency analysis methods to evaluate vibration signals from the gear unit. A micromechanical acceleration pickup, built into the diagnostic unit, is used as the sensor. The unit allows to monitor up to 5 different objects (bearings, etc.) or individual 20 frequencies (imbalance, gear meshing frequencies, etc.). Further, a frequencydependent level monitor can be activated for monitoring impacts or vibrations. The objects to be monitored are defined using external software and are transferred to the diagnostic unit via RS-232 interface. The damage progress is indicated by a series of LEDs on the DUV30A diagnostic unit. Two switching outputs are available for connecting the diagnostic unit. Early warning: The early warning signals that the early warning threshold of one of the objects (bearings, etc.) has been exceeded, in this way warning of a beginning damaging process. Main alarm: The main alarm signals that the main alarm threshold of one of the objects (bearings, etc.) has been exceeded, in this way warning of upcoming damage. After startup of the drive to be monitored and the diagnostic unit, a comparison measurement ("teach-in") is carried out and stored in the diagnostic unit. During operation, the current measurements and the teach-in values are compared, and a trend analysis is carried out. Changes to this relationship (measured value: teach-in value) indicate the early phase of possible damages. The maximum operating range is 120 to or 12 to 3500 rpm (shaft speed) per setting with a minimum measuring time of 0.8 or 8 seconds per object. The diagnostic unit can be operated either with constant or variable speed, whereby the actual measurement can only occur during constant speed. INFORMATION For more information on the evaluation unit and accessories, refer to the "DUV30A Diagnostic Unit" manual, publication no Catalog Helical and Bevel-Helical X.. Series Gear Units

8 DUV30A diagnostic unit (vibration diagnostics) M12x M5 6 4 M8x [2] 58351AXX Mounting examples V 24 DC DUV30A diagnostic unit 6101AXX Catalog Helical and Bevel-Helical X.. Series Gear Units 139

9 Adapter for mounting external vibration sensors. Adapter for mounting external vibration sensors On request, SEW provides sensor sockets that are screwed into a screw plug bore of the gear unit. Any external vibration sensors can be fastened to this sensor socket. An M5 attachment thread is available as standard. The usual positions of the screw plug bores are shown below. You find the exact position of the screw plug bore in the order documents. Example 6050AXX 140 Catalog Helical and Bevel-Helical X.. Series Gear Units