TREND NXL Variable Speed Drives - Manual (Page 3)

3 NXL Variable Speed Drives Data Sheet TA200620 Issue 1/G 13/06/07
Data Sheet NXL
Terminals for NXLAA03xx to NXLAA61xx where xx = C2 or C5 (MF4 to MF6)
Terminals for NXL0002C1 (MF2 single phase to three phase)
L1 L2 L3 U/T1V/T2 W/T3 21 22 23
9 10 11 18 19 A B
1 2 3 4 5 6 7 8
30
9 10 11 18 19 A B
1 2 3 4 5 6 7 8
30
21 22 23
B- B+ R- U/T1 V/T2 W/T3 L1 L2 L3
Terminals for NXL00015, NXL00025 (MF2 three phase to three phase)
L1 L2 L3 U/T1V/T2 W/T3 21 22 23
9 10 11 18 19 A B
1 2 3 4 5 6 7 8
30
Terminals for NXL0003C1 to NXL0006C1 (MF3 single phase to three phase)
21 22 23
9 10 11 18 19 A B
1 2 3 4 5 6 7 8
L1 L2 L3 U/T1 V/T2 W/T3 BR+ BR-
30
1~
not used
FUNCTIONALITY
The NXL range of variable speed drives provides both three phase to three phase (1 A to 61 A) and single phase to three phase
(2 A to 6A) units. Of particular use in the HVAC environment, they enable fans and motors to regulate delivery of air and water
in variable flow applications. Where flow rates may be reduced, motor energy can be significantly cut as the relationship between
flow rate and power follows a cube law hence reducing flow by 20% reduces power by 50%. The drives also enable saving in
installation costs; switchgear is eliminated, motor cables are reduced from 6 to 3 wires, power factor correction capacitors are
not required, size and cost of cabling and fuses is minimised (as starting current is kept within nominal value).
The sensorless flux vector control gives dynamic precision over most of the speed range. A drive is provided with built-in control
application, which can be set up from the control keypad. It has a slot for an optional I/O expansion board.
HARDWARE
The Trend NXL is an extremely slim, space-saving and
easy-to-use frequency converter for the power range of 0.37
to 30 kW. The installation is flexible and easy using the mounting
components shipped with the unit. Traditional back installation
and side installation, suitable for very limited space, are available,
as well as DIN rail mounting.
Easy programming and commissioning add to overall
user-friendliness. The default control I/O of the Trend NXL includes
the most common control inputs and outputs. For maximum
compatibility, the connector numbers correspond to those of the
Trend NX drives. Parameter setting is carried out in a familiar
way, either via the control panel or by means of the PC tools for
the NXL.
An optimal solution is available for most application needs. The
modular design allows the choice of only the functions and
features needed in a specific application. The control keypad is
fitted as standard. The NXOPTAA board (3 x digital inputs, 1 x
digital relay output, and 1 x digital open collector output) is fitted
as standard in the I/O expansion slot of the Ecodrives; it can be
fitted as an optional extra in the Microdrives. At the core of the
NXL is sensorless vector control technology coupled with current
measurements of all three output phases. Fieldbus control using
RS485 Modbus is available as standard. The Trend NXL also
incorporates PID control as standard, enhanced with a host of
special features such as a sleep function.