Order Code: 20448
Product Brand: Marelli
Part No: MAA90LB4 B5 Os Enc Fc Th
Obsolete product. Alternatives may be available - see linked products below
Marelli 90 Frame - 3.4kW 3ph 4 Pole, flange mounting AC Motor with; Oil Seal, 2048ppr x 15V Encoder, Force Cooling Fan and Over-Temperature detectors for 400V 3 phase supply from a Variable Frequency Inverter Drive with its base frequency set to 87Hz.
Nominal Speed is 2425RPM and can be used over a 1000:1 Speed Control range to 3000RPM (0.1Hz to 100Hz) continuously, as there is a separately powered cooling fan.
Full Load Current - 8.5A/7.9A at 400V.
Base or Nominal frequency: 87Hz
Overload - 150% x 60seconds.
Set terminal box links 'three a-breast' for 'Delta' connection (normally 230V x 50Hz, now 400V x 87Hz).
Encoder is 12V to 30V at 2048ppr in quadrature with complements.
Over temperature detectors are Thermistors.
177mm Wide x xxxmm Long x 235mm high overall in its IP55 enclosure.
Flange mount on 11mm diameter holes at 165mm pcd with 130mm dia spigot in 200mm diameter flange.
Shaft is 24mm dia x 50mm with 8mm wide key.
Oil seal fitted.
Shaft side load is 80kg for 20,000hrs life (6205-2Z bearing)
Weight is 20.4kg.
Rated at 40C Ambient.
Ventilation space required at rear cooling air intake.
Full part number is - MAA90LB4/B5/Os/Enc/Fc/Th
For Variable Speed use…
Continuous Output when Inverter powered is...
11.6Nm - 3.4kW (4.6HP) x 2800RPM at 100Hz x 7.9A
13.5Nm - 3.4kW (4.6HP) x 2425RPM at 87Hz x 7.9A
14.25Nm - 3kW (4.0HP) x 2000RPM at 72Hz x 8.2A
15Nm - 2.2kW (3.0HP) x 1400RPM at 50Hz x 8.5A
15Nm - 1.1kW (1.5HP) x 700RPM at 25Hz x 8.5A
15Nm - 0.22kW (0.3HP) x 140RPM at 5Hz x 8.5A
15Nm x 2.8RPM at 0.1Hz (uses 690P in closed loop Vector control or equal)
This replaces a flange mounting DC motor at 3kW x 2000RPM