Red-lion MDC User Manual download pdf (Page 41)

ISOLATED DRIVE OUTPUT CALIBRATION

Note: There is no need to calibrate the Drive Output Span if an EXTERNAL

reference is used or if the INTERNAL reference is used with the factory

calibrated 0 to 10 V span. If this is the case, skip Drive Output Span

Calibration and go to Motor Drive Setup.

DRIVE OUTPUT SPAN CALIBRATION

1) Make sure that the INTERNAL/EXTERNAL jumper above the bottom rear

terminal block is in the INTERNAL position.

2) Before connecting the MDC to the DRIVE, you must set the Span POT for

the Full scale control output required by the DRIVE. Connect a voltmeter

to the MDC drive output terminals. Power up the MDC. Enter the

Programming Module (see Programming General Description). In the

PROGRAM DIAGNOSTICS Menu, select TEST DRIVE OUTPUT. Push

the Up arrow until the %Output reads 100%. The meter should read 10

VDC. Adjust the Span POT for the desired Full scale value within the 5 to

15 VDC specified range of the MDC.

MOTOR DRIVE SETUP

1) Before connecting the MDC to the Motor Drive, set up the Drive according

to the manufacturer’s instructions.

2) Then set the Drive’s :

a) Acceleration / Deceleration POTs to minimum time (maximum rate).

b) IR compensation to a minimum.

c) Maximum Speed to 110% of the maximum normal operating speed with

an unloaded or lightly loaded motor.

This completes the steps necessary to calibrate the MDC for the Motor and

Drive. To verify that calibration is correct and to test system operation,

continue with VERIFYING SYSTEM OPERATION.

VERIFYING SYSTEM OPERATION

1) With the MDC connected to the Drive as noted in Installation and

Connections, power up the MDC and enter the Programming Module.

2) Set up the scaling for the MDC in the Program Scaling Menu, if you have

not already done so.

3) Power up the Motor and Drive. The motor should have no load or be only

lightly loaded.

4) Enter the Program Diagnostics Menu and select TEST DRV OUT. Use the

Up arrow key to select 100% output. The transducer feedback in Hz is

shown on display line two. It should be:

Feedback (Hz) =

1.1 x PPR FB x MAX RPM FB

This allows 10% headroom to maintain regulation under various motor

load conditions. If the feedback frequency is not close to this value, adjust

the DRIVE’s GAIN or MAXIMUM SPEED POT accordingly. Use the Up

and Down arrow key to test the drive/motor operation over the full speed

range. Use the F2/STP key to stop the motor immediately. Use the ESC key

to stop immediately and exit TEST DRV OUT.

5) Verification complete. Exit the PROGRAM MODULE.

TRIM

The Trim value can be displayed on one of the programmable displays (See

Program Displays Menu). The Trim value is the number of D/A correction

bits out of the available 4095 that are required to maintain the target speed.

This value should not be more than 200 to 300 during normal operation with

an UNLOADED motor. The Trim value will increase to compensate for an

increase in motor load. If the Trim value is over 300, refer to the Drive Output

Span Calibration and Motor Drive Set-up sections above.

-39-

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 50 51

Comments to this Manuals

No comments

Red-lion MDC User Manual Page 41

Comments to this Manuals

Related products and manuals for Computer Accessories Red-lion MDC