Connection Diagrams; Frequency Converter (If Used); Protective Grounding Wire; Residual Current Circuit Breaker - SystemAir AXC Installation And Operating Instructions Manual

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| Commissioning

Type
AXC, AXC...-B,-D,-G
AJ8, AJ8...(B), (K), (F)
AJR, AJR...(B), (K), (F)
AXC, AXC...(B), (K), (F)
AXR, AXR...(B), (K), (F)
AXS
AXCP, AXCP...(B), (F)/
AXCPV/AXCPV (B), (F)
AXCBF
8.4.1

Connection diagrams

3–phase motor with optional
thermal contacts or cold conductor.
8.5

Frequency converter (if used)

Risk from resonant frequencies when using frequency
converter.
♦ 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.
♦ Observe the operating instructions of the frequency
converter.
Operation of the frequency converter
♦ Avoid running the fan via the frequency converter below 20 Hz.
♦ If controlling the fans via a frequency converter, provide thermal protection in the form of a PTC resistor or
thermal contacts (TC) in the motor.
♦ Starting time: min. 60 sec.
8.6

Protective grounding wire

• The terminal box is provided with a labeled grounding connection.
• The protective grounding must have a cross-section equal to or greater than that of the phase conductor.
8.7

Residual current circuit breaker

All-current-sensitive residual current circuit breakers are required for use in alternating-current systems with 50/60 Hz,
in combination with electronic devices such as EC motors, frequency converters or uninterruptible power supplies
(UPS).
9 Commissioning
Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is
provided.
It is recommended to fill out the commissioning report chapter 15.
Electrical Connection
Connection via terminal box. The terminal box is fitted on the outside of the housing.
Connection via terminal box. The terminal box is attached to the motor.
Dahlander motor with optional
thermal contacts or cold conductor.
Motor, 2 windings with optional
thermal contacts or cold conductor.
Commissioning 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.
♦ Provide thermal protection in the form of a PTC
resistor or thermal contacts (TC) in the motor.
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