CEFLA NewTom VGi evo - Page 46

Maintenance of the system
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NewTom VGi evo – Service Manual rev 6 9-14
Dip Switch / Pin
ON/OFF
Function
SW1 - 1
ON
VOLTAGE FEEDBACK
SW1 - 2
OFF
CURRENT LOOP ACTIVE
SW1 – 3
OFF
OUTER LOOP ACTIVE
SW1 – 4
OFF
OFFSET
SW1 – 5
ON
INHIBIT ACTIVE LOW
SW1 - 6
ON
STANDARD OPERATION
2. Set the potentiometers as following:
Potentiometer
Setting
Function
1
COMPLETELY COUNTER-CLOCKWISE
LOOP GAIN
2
COMPLETELY CLOCKWISE
CURRENT LIMIT
3
COMPLETELY COUNTER-CLOCKWISE
REFERENCE GAIN
4
COMPLETELY COUNTER-CLOCKWISE +
6 ROTATIONS CLOCKWISE
OFFSET / TEST
3. Connect Voltage DC Tester probes on P2 connector (Power Connector) as following
Red Pin P2 Connector Pin B (2)
Black Pin P2 Connector Pin A (1)
Moving the column in UP direction by the consolle. Wait a few seconds so that the speed is maximum (2nd
gear)
Set the Potentiometer n. 3 until the voltage is about 36Vdc ± 0.5V
Moving the column in DOWN direction by the console. Wait a few seconds so that the speed is maximum (2nd
gear)
Set the Potentiometer n. 4 until the measured voltage are as similar as possible to the value obtained in the
direction UP (obviously with reverse polarity: approx -36Vdc ± 0.5V)
4. Moving the column in UP direction by the console. Wait a few seconds so that the speed is maximum (2nd
gear) and verify that the voltage is still within the predetermined range 36Vdc ± 0.5V.
If not, set again the Potentiometer n. 3