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Control PCB for Automatic Switching Unit
- Delayed starting of your second drive for best mains fuse protection
- Supports delayed switching off
Special featues:
- Effective protection of your back-up fuse
- No second control panel for second drive required
- Automatic starting of your second drive (e.g. dust extractor)
- Automatic delayed switching off your second drive
Technical data:
- Article number
- 870 058 02 = 230V
870 059 02 = 400V - Input voltage
- 230 V/50-60 Hz
400 V/50 Hz - Permissible voltage range
- 85-110 %
- Current input
- 7 A and 16 A
- Making threshold
- Adjustable by potentiometer
Range 7 A = approx. 0.4 A
Range 16 A = approx. 1.0 A - Switching times
- Adjustable by potentiometer
- Making delay
- Approx. 1.8 sec. - 4.5 sec.
- Breaking delay
- Approx. 5 sec. - 15 sec. (depends on making relay)
- Ambient temperature
- 0 ... +45 °C
- Output signal
- Potential-free contact
- Dimensions of control PCB
- 75 x 54 x 28 mm (LxWxH)
- Switching relay
- Potential-free contact for control circuit actuation
- Nominal voltage
- 250 V AC
- Making current
- 5 A
- Nominal switching capacity
- 1250 VA
- Test voltage open contact
- 750 V AC eff
Use in series:
Circuit diagram [pdf-File]
Functional description:
Closing delay devices are used for delayed switching on of motors and other inductive loads. This is important for trouble-free start-up. Starting a motor creates high starting currents that exceeds the nominal current approximately by a factor of 6. Starting two motors simultaneously can create starting currents that trigger the back-up fuse. To prevent this from happening, closing delay units are used to start the second drive after a certain time delay. This provides an additional advantage: The second drive will start automatically and without operator intervention after approximately 1 - 4 seconds. After switching off the main drive, the second drive will be switched off with a certain delay. This feature is useful for dust extractors and many other applications.