21
Calibration
TACH (for use with tachogenerator feedback only)
Calibrate the TACH trimpot setting only when a tachogenerator is used.
The TACH setting, like the IR COMP setting, determines the degree to
which motor speed is held constant as the motor load changes.
To calibrate the TACH:
1. Connect the tachogenerator to T1 and T2. The polarity is “+” for T1 and
“–” for T2 when the motor is running in the forward direction.
2. Set switch 504 (SW504) to ARM for armature feedback.
3. Set the power switch to
I
(on).
4. Press
FWD
.
3. Set the forward speed adjust potentiometer full CW. Measure the
armature voltage across A1 and A2 using a voltmeter.
4. Set the speed adjust potentiometer to 0 (zero speed).
5. Set SW504 to TACH for tachogenerator feedback.
6. Set the IR COMP trimpot full CCW.
7. Set the TACH trimpot full CW.
8. Set the speed adjust potentiometer full CW.
9. Adjust the TACH trimpot until the armature voltage is the same value as
the voltage measured in step 3.
Check that the tachogenerator is properly calibrated. The motor should run
at the same set speed when SW504 is set to either armature or
tachogenerator feedback.
Logic board trimpots
FWD JOG
The FWD JOG trimpot setting determines the motor speed when it rotates
in the forward direction in the jog mode. To calibrate FWD JOG:
250-0234 rev 1.qxd 3/12/99 11:14 AM Page 21
Содержание RG501A
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Страница 10: ...2 Dimensions Figure 1 RG501A and RG511A Dimensions 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 2...
Страница 35: ...27 Block Diagram Figure 13 RG501A and RG511A Block Diagram 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 27...
Страница 41: ...33 Notes 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 33...
Страница 42: ...34 Notes 250 0234 rev 1 qxd 3 12 99 11 14 AM Page 34...
