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Commissioning tips

Commissioning ATV11 variable speed drive

Introduction

How to set up the ATV11 drive for simple applications. How to quickly test this drive.

This test can be used as a first phase during a more complex commissioning.

Important precision

Schneider delivers new drives pre-configured in the same way. This set of parameters is called “Factory setting”. It is possible to return to the factory setting at any time:

Menu FUN  FCS= In I

This sheet considers that:

  • the parameters are at the factory setting (for a new product out of the box).
  • the motor to be driven is a classic 50 Hz squirrel cage motor and not a synchronous or slip-ring motor
  • the motor to be driven is of the same caliber as the motor
  • the commissioner knows how to use the graphic terminal or the display (validation, tree structure)

1) Run the engine with the acceleration and deceleration ramps (two straps)

Wiring

  • bridge the AI1 terminal (analog reference) to the + 5V terminal,
  • bridge terminal LI1 (forward) of the terminal block to the + 15V terminal

Operation

The drive starts and follows the 3 sec acceleration ramp.

To stop the motor, de-bridge LI1, the drive slows down according to the deceleration ramp of 3 seconds, you can modify by acting on the DEC or Deceleration parameter

Setting

  • to start at a minimum speed, set LSP (Low Speed) to the desired minimum value: (0 in factory setting)
  • To set a maximum speed, set HSP (High Speed) to the desired setpoint speed (for example 40 Hz) HSP = 40
  • To modify the value of the acceleration ramp, for example to change it from the value of 3 seconds (factory setting) to 10 sec ACC = 10

Buttonhole

Using a two-position on / off switch.

In factory setting, all you have to do is insert the contact of a two-position switch of the XB4BD21 type

2) Vary the speed with a potentiometer (wiring of a potentiometer and a jumper)

Setting

  • Reposition the LSP parameter to the value 0 => see 1) (not necessary if factory setting)
  • Reposition the HSP parameter to the value 50 => see 1) (not necessary if factory setting)

Wiring

  • Use a potentiometer with a maximum value of 10 kohms, the reference SZ1RV1202 is the Schneider potentiometer standard: value 2.2 kohms.
  • Connect the potentiometer as follows: complete resistance between the + 5V and 0V terminals and the midpoint in AI1

Operation

  • Bridge terminal LI1 (Forward) of the terminal block to the + 15V terminal

The drive starts up, follows the acceleration ramps and reaches its speed setpoint determined by the potentiometer, and the speed can be changed with the potentiometer.

3) Protect the motor (one parameter)

  • Set the thermal protection of the drive to protect the motor. On the motor nameplate, store the nominal current and report it to the Ith parameter of the drive:

Ith = I motor name

4) Use of preset speeds (4 parameters and 4 bridges)

Schneider variable speed drives are preconfigured in pre-selected speeds. We will not detail this part, just a simple example to use:

Using a:

  • slow speed of 5 Hz if input LI3 is activated
  • average speed of 45 Hz if input LI4 is activated
  • fast speed of 50hz if LI3 and LI4 are deactivated

Whatever speed is chosen, the Run Direction Forward command LI1 or the Run Reverse command LI2 must be activated.

Wiring

AI1 bridged to + 0V (ATV11).

LI1 will be bridged to start forward at the HSP speed of 50Hz or at the setpoint speed of the

potentiomètre.

LI2 sera ponté pour démarrer en marche arrière à la vitesse HSP de 50Hz ou à la vitesse de consigne du

potentiometer.

LI3 will be bridged to have the slow speed of 5 Hz, LI1 (forward direction) or LI2 (reverse direction) will also be bridged LI4 will be bridged to have the average speed of 45 Hz, LI1 (forward direction) or LI2 (reverse direction) will be also bridged

Use switches or rotary knobs instead of bridges

Setting

Check parameters LSP = 0 and HSP = 50 (factory settings)

Menu FUN  PS2  LIA = LI3

Menu FUN  PS2  Lib = LI4 SP2 = 5 hz SP3 = 45 Hz

SP2 = 5 hz

SP3 = 45 Hz

5) Optimization or auto-tuning or Tuning of the drive / motor assembly (5 to 6 parameters)

This operation is not essential but it is strongly recommended, it allows, among other things, to optimize the currents (reduce them) which avoids overheating and allows energy savings.

In practice, it is a matter of reading the information from the motor nameplate and copying it to the drive, then launching Tun or autotuning

The motor must be connected to the drive (downstream contactor active) and the LI1 or LI2 run command must be deactivated.

DrC menu

UnS = rated nominal motor voltage

FrS = Rated motor frequency

nCr = Nominal rated motor current

nSL = motor rated slip motor

Cos = cosine phi of the motor plated motor (leave in default value) No Tun for the ATV11

6) To resolve the Nst fault on power-up

Nst can be:

  • a drive status: Waiting for a command by bus or communication network (CanOpen, Modbus, TCP / IP, ..). . the drive is wired. If you want to test the drive out of communication, with the terminal block or the display, un-wire the drive and force it to factory settings
  • a fault if the drive is not wired to a network or a bus

The tCt [2-wire control type] parameter is set to the trn [Transition] value in the factory setting, this setting indicates that a transition or edge state change is required to start operation in order to avoid an untimely restart after a power interruption. This configuration can cause NST faults when the power is switched back on, to avoid:

  • Check that the product is in 2-wire control, position it in this configuration: FUN menu tCC ACt = 2C
  • all you have to do is set the tCt [2-wire control type] parameter to the LEL value [Level] (state 0 or 1 is taken into account for running or stopping):

FUN menu tCC tCt = LEL

Please note, the product restarts when the power is turned on; check if the safety of goods and people is taken into account

7) To run the engine without bridging, only with the terminal or display

Not possible with standard ATV11

Possible with ATV11 range A and E327

Fun menu tCC = LOC LSr = LOC

Control on / off with the RUN and STOP keys and the setpoint via the potentiometer

Download the ATV11 drive commissioning guide in PDF format

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