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Commissioning

Current controller adjustment

6.7



6.7−1

EDSVS9332P EN 5.0−07/2013

6.7 Current controller adjustment

When is a current controller adjustment required?

ƒ The motor data of the motor used is not contained in GDC (e.g. motors

from other manufacturers).

ƒ The application makes high demands on the dynamic performance of

the drive controller (e.g. dynamic positioning, cross cutter).

ƒ The motor/drive controller combination does conform to the standard

power−based assignment. The basic current controller settings only

match for a power−based assignment of the drive controller.

Measure Setting Explanation

Reduce maximum

current

Reduce the value in

C0022

With the motor at standstill, the motor

current of the motor phase U is measured

(field frequency 0). This increases the

motor current in the motor phase to

141% and the motor temperature rises

significantly.

Generate maximum

torque setpoint

Connect MCTRL−M−ADD

with FIXED100%

For speed control or position control

(MCTRL−N/M−SWT = 0)

l Connect

MCTRL−M−ADD with

FIXED100%

l Connect

MCTRL−N−SET with

FIXED100%

For torque control (MCTRL−N/M−SWT = 1)

Deactivate integral

action component of

current controller

Set C0076 = 2000 ms The integral action component of the

current controller is deactivated by

setting the reset time T

(C0076) to the

longest time. The gain (C0075) remains

unchanged (Lenze setting still valid).

Deactivate quick stop Set X5/E1 = HIGH or

X5/E2 = HIGH

By preselecting a direction of rotation the

quick stop is deactivated.

Change the operation of

the motor control

Set C0006 = 3 Even if an asynchronous motor is

connected, set the motor control to

’synchronous motor’.

Set the rotor position

setpoint

Set C0058 = −90° Set the rotor displacement angle to −90°.

Set the actual value

display of the rotor

position to 0° under

C0060

1. Select a TTL encoder

under C0025

2. Save settings with

C0003 = 1

3. If required,

disconnect the

encoder cable at X8

4. Switch off the mains

supply and the

external 24V supply

(if required) and then

on again.

After mains connection C0060 = 0° is

displayed.

Connect the storage

oscilloscope

Put the clamp−on

ammeter around the

motor phase U and

connect it to the

oscilloscope

Oscilloscope settings:

l Time base: 400 ms/DIV

l Auto−triggering

Preparations

1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 444 445

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