User`s guide

that b18=0 (default value).

6.7.2Motor Function Tests

For the following tests it is recommended that the motor should be mechanically uncoupled,

although it is not essential if the load is easy to rotate by hand.

1 Select parameter Pr83. Rotate the motor shaft by hand in a clockwise direction (looking

at the shaft end of the motor). Observe that the displayed value of Pr83 increments as

the shaft is turned. Reverse the direction of rotation and observe that the value

decrements. If the observed indications are otherwise, inspect the resolver connections.

2 Perform the resolver phasing. (This step is unnecessary if the resolver phasing

procedure has already been performed, Reference Section 6.3.) Set b49=1. Verify that

the motor always runs in the same direction, by steps each corresponding to 20

rotation. If motion is seen to be irregular, inspect the resolver connections.

3 Restore the control connections to terminals B9 through to B17. If using a digital speed

preset command, apply the stop input (Terminal B6). If using an analog input (terminals

B9 and B10), set the command to zero.

4 Enable the drive by applying a +24V signal at terminal B14. The motor will remain

stopped in hold or, in the case of an analog command, it may rotate at low speed due to

an offset in the analog command.

5 Apply a command - below 1V if analog, or a low value such as 10% of maximum speed.

Observe that the rotation of the motor is correct.

This completes the fundamental verification tests for the drive and motor. The procedure

should be repeated for all other drives in a multi-axis system before beginning the working

tests in automatic mode. Finally, the machine should be set up to execute standard working

cycles in normal operating conditions for a period of at least 15 minutes, during which each

drive in the system should be interrogated -

If b33=0, at least one alarm condition exists, and further investigation is necessary;

If b89=1, the drive has entered the I

t region. The actual value of I

t is displayed by Pr80

as a percentage (fully-integrated value = 100). It may be necessary to reconsider the

setting of Pr45 or to change the duty cycle to reduce the I

eff

so I

t is not activated (refer to

Fig. 10).

6.8Tuning

The MX system offers digital adjustments for drive / load tuning. The adjustment range is

very wide which makes it easy to stabilize systems with very high inertial mismatches. The

MX is easily capable of tuning for mismatches of over 70:1 which is unheard of in most

analog based and many digital amplifiers. All the tuning parameters that are SAVED remain

in the keypad. If it becomes necessary to replace the amplifier the keypad can be installed

onto the replacement amplifier and it would be ready to go with no re-tuning.

NOTE

: Remember to store the parameters by setting b99-1.