Single-Phase Acmotors; Connecting Ex Motors; Synchronous, Reluctance, And Pm Motors - Eaton PowerXL DA1 Series Installation Manual

2.9.4 Single-phase ACmotors

2.9.5 Connecting EX motors

2.9.6 Synchronous, reluctance, and PM motors

It is not permitted to run DA1 variable frequency drives with single-phase AC
motors (induction motors), single-phase asynchronous motors (capacitor
motors), shaded-pole motors, etc.
The following aspects must be taken into account when connecting
hazardous location motors:
• A DA1 variable frequency drive can be installed in an Ex-area or in a
control cabinet outside of the Ex area.
• All applicable industry-specific and country-specific regulations for
hazardous locations (ATEX 100a) must be complied with.
• The specifications and instructions provided by the motor's
manufacturer with regard to operation with a variable frequency drive –
e.g., whether motor reactors (dV/dt limiting) or sine wave filters are
required – must be taken into account.
• Temperature monitors in the motor windings (thermistor, Thermo-Click)
must not be connected directly to the variable frequency drive, but
instead must be connected through a relay approved for the hazardous
location (e.g. EMT6).
DA1 variable frequency drives can be used to run premium efficiency
three-phase motors, such as:
• Efficiency classes IE3 and IE4
according to IEC/EN 60034-30, EU No. 4/2014,
• Permanent magnet motors (PM motor),
• Synchronous reluctance motors (SynRM),
• Brushless DC motors.
These motor technologies have comparable efficiencies at their rated
operating point and identical efficiency classes, but also have significant
differences when it comes to their startup behavior and partial-load
operation.
The rating plate details, e.g. 315 V, R
U = 195 V / 1000 min
Pol
￫
For information on and examples for permanent magnet and
brushless DC-motors, please refer to application note
AP040051EN.
DA1 Variable Frequency Drives 08/18 MN04020005Z-EN www.eaton.com
= 2.1 Ω, L* = 20 mH and
20*
-1
also differ significantly from the usual details.
2 Engineering
2.9 Three-phase motor
67