Installation and operating instructions
Table Of Contents
- 1 General information
- 2 Important safety information
- 3 Warranty
- 4 Delivery, transport, storage
- 5 Description
- 6 Name plate and type key
- 7 Installation
- 8 Electrical connection
- 9 Commissioning
- 10 Operation
- 11 Troubleshooting/maintenance/repair
- 12 Cleaning
- 13 Deinstallation/dismantling
- 14 Disposal
- 15 Commissioning Report
10
| Electrical connection
Control output reference (tacho)
Important
The applied voltage and the value of the pull-up
resistor must be selected that the current does
not exceed 20 mA.
Frequency = speed (rpm) * 0,6015
Example:
669 Hz / 0,6015 = 1112,21 rpm
-> 36 impulse / revolution
B = customer side A = fan side
open collector circuit
8.3 Variable-speed fans (Frequency converter / EC motor)
Risk from resonant frequencies.
♦ Only operate the fan outside these speed ranges.
♦ Pass through these speed ranges so quickly that any vibration cannot exceed the admissible resonant frequency
values.
♦ For variable-speed fans, use a permanent vibration monitoring for long-term safe operation.
Operation of the frequency converter
♦ Heating of the motor due to use of a variable
frequency drive must be checked in the application by
the customer.
♦ Avoid running the fan via the frequency converter
below 10 Hz.
♦ Starting time: min. 60 sec.
Commissioning of the frequency converter
♦ Observe the operating instructions of the frequency
converter.
♦ Install the fan and frequency converter as near as
possible to one another.
♦ Use shielded cables.
♦ All components (fan, frequency converter and motor)
must be grounded.
♦ We recommend using all-pole sinus filters.
♦ Never exceed the maximum impeller rotation speed
indicated on the name plate of the fan.
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