Lenze E84AVSCE3712SX0 8400 StateLine C Inverter 0.37 kW

0.37 kW StateLine C inverter, standard version

Lenze E84AVSCE3712SX0 is rated 2.4 A at 45 degrees C (1.8 A at 55 degrees C), which suits a four-pole motor of 0.37 kW. Supply is 1/N/PE AC 230 V (180 to 264 V). The numbers come from the 8400 hardware manual EDS84ASC552 EN 10.0 published by Lenze for StateLine C, HighLine C and TopLine C devices of 0.25 to 45 kW; please confirm availability and the hardware version of this exact code before ordering.

Technical specifications

Enclosure, output range and approvals

Output frequency reaches 1000 Hz. Protection is IP20, equal to NEMA 250 type 1 for accidental contact. Conformity and approval entries: CE, EAC per TR CU 004/2011 and TR CU 020/2011, UL 508C, and CSA 22.2 No. 14 when an external mains choke is fitted.

How the code E84AVSCE3712SX0 breaks down

The hardware manual’s product key splits the code as E84 (Inverter Drives 8400), A (first version), V (vector-controlled), SC (StateLine C), E (installation, the standard mounting), 371 (power: 37 x 10^1 W, that is 0.37 kW), 2 (voltage class 2 = 230/240 V single-phase), S (standard industrial environment IE33), X (without safety system), and 0, the standard design.

Operating and control features

Features listed for StateLine C include VFCplus and VFCplus eco V/f control, sensorless vector control, S-ramps, flying restart, brake management and chopper, and 200 percent overload for 3 s. I/O is 5 digital in, 1 digital out, 1 analog in, 1 analog out and a relay, with an HTL encoder input to 10 kHz. CANopen is on board and MCI slots take the fieldbus modules.

Mounting and sizing

Dimensions of the GG 1 unit are 165 mm in height and 70 mm in width. The data assume 2 or 4 kHz and no mains choke; at 16 kHz the rating is 1.6 A. The brake chopper needs a resistance of 180 ohm or more. With a mains choke the input current drops from 5.0 A to 4.2 A. Keypad X400 (EZAEBK1001) and fieldbus modules are ordered separately.

The hardware manual adds operating limits for all sizes. Mains switching is allowed three times in nine minutes without restriction, and the starting current is twice the rated current. TT and TN systems are permitted without restriction, whereas IT systems or grounded-phase networks require the special measures in the manual. Leakage current exceeds 3.5 mA AC or 10 mA DC, so observe the earthing rules for the 0.37 kW size.

Matching the E84AVSCE3712SX0 to the motor and the load

Begin with the motor nameplate rather than the kilowatt figure alone. The 0.37 kW assignment assumes a four-pole motor, so check that the motor’s rated current sits within 2.4 A if the cabinet stays at or below 45 degrees C, or within 1.8 A if it may reach 55 degrees C. If you intend to run the inverter at 16 kHz to reduce motor noise, the usable rating falls to 1.6 A, which can push a fully loaded 0.37 kW motor beyond what this size will deliver continuously. Note also that the supply must be single-phase 230 V; for a three-phase 400 V installation this code is not the right choice.

Next look at the duty. Fans and centrifugal pumps rarely need much starting torque, and the VFCplus eco mode suits them. Conveyors, mixers and positive displacement pumps benefit from sensorless vector control and from the 200 percent overload for 3 s. If the load overhauls the motor, as on an inclined conveyor or a high-inertia fan that must stop quickly, plan a braking resistor of at least 180 ohm for the internal chopper.

Accessories to decide on before ordering

• The X400 keypad (EZAEBK1001) if parameters will be set locally rather than from a PC.
• A fieldbus module for the MCI slot if the plant uses a network other than the onboard CANopen.
• A mains choke, which reduces input current and is needed for the CSA entry.
• A suitable brake resistor, where the application regenerates energy.

Installation and commissioning steps

Mount the GG 1 unit vertically in an enclosure that provides the IP protection the site needs, since the inverter itself is IP20. Fit the fuse given in the table, connect a permanent protective earth in line with the earthing rules for leakage currents above 3.5 mA, and route the motor cable separately from control wiring. With the motor uncoupled where possible, enter the nameplate data, choose the control mode, set acceleration and deceleration ramps, and test the digital inputs, analogue reference and relay before running the driven machine. Remember the mains switching limit of three times in nine minutes when testing, and use the enable input rather than the mains contactor for frequent starts and stops.

Maintenance and fault finding

Keep the heatsink and cooling paths clean, because a blocked inverter will reach its thermal limit long before its electronics wear out. If trips appear only on hot afternoons, compare the motor current with the 1.8 A rating at 55 degrees C. Overvoltage trips during deceleration point to a missing or undersized brake resistor or a ramp that is too short. Save the parameter set once commissioning is complete so a replacement unit can be set up quickly.

Operating in Omani and GCC panels

The 50 W heat loss is small, but it adds up in a sealed cabinet that is already exposed to high ambient temperatures. Size enclosure cooling so the air around the inverter stays at 45 degrees C where possible, and filter the cooling air on dusty sites. At coastal locations, keep the cabinet sealed against humid, salty air and check terminals for corrosion during shutdowns.

Documentation and quote requests

Complete rating, dimension, fuse and accessory tables are in the attached Lenze hardware manual. More drives: AC Drives. A quotation needs the complete code, mains voltage, motor nameplate and fieldbus; the variant should be verified against the nameplate before ordering.