Rockwell Automation FlexPak 3000 DC Drive Version 4.3 - Manual (Page 56)

3-8 FlexPak 3000 DC Drive Hardware Reference Version 4.3
To use the +10V power supply for the manual reference potentiometer, place the
jumper on pins 2 and 3 (POT). The supply at terminal 16 of the regulator board
terminal strip is used.
To use an external +10 V source, place the jumper on pins 1 and 2 (EXT). The
external reference is connected at terminals 17 and 18 of the regulator board terminal
strip.
Note that this input can be used as a trim on the auto mode speed reference by setting
the jumper on pins 1 and 2 (EXT).
3.4.6 Set the Voltage Range and Scale of an Analog Tachometer
(Jumpers J14 and J11)
The TACH V RANGE (J14) and TACH V SCALE (J11) jumpers set the voltage range
and scale of the analog tachometer.
Note: This jumper is ignored if an analog tachometer is not used and if FEEDBACK
SELECT is not set to DC TACH or AC TACH.
During the quick start procedure, the drive calculates the value of the tachometer
voltage range based on the values of TOP SPEED and ANLG TACH VOLTS/1000 and
the setting of FEEDBACK SELECT. The correct values are displayed on the Correct
Scaling Jumper Positions screen. Verify these jumper settings before performing the
self-tuning procedure.
The expected analog tachometer voltage range can be set to a maximum of 250 VDC
or 62 VDC. J11 selects the hardware circuitry to maximize the resolution over the
entire speed range.
Note that the output voltage of the tachometer must not exceed 250 V for DC
tachometers or 275 RMS for AC tachometers when the motor is rotating at TOP
SPEED. To calculate the output voltage at top speed, multiply the two parameter
values:
Tachometer Voltage at TOP SPEED = TOP SPEED x ANALOG TACH VOLTS
1000 1000
See table 2.7 for tachometer connections to the Regulator board terminal strip.
!
ATTENTION: The drive will not operate at the correct speed if these
jumpers are not set to the correct positions. Failure to observe this
precaution could result in damage to, or destruction of, the equipment.
Jumpers
Voltage J14 J11
Top Speed Tach Volts < 16 volts
1
1.
For proper operation, minimum tach voltage must be at least 18V/1000.
LOW 16
Top Speed Tach Volts < 31 volts LOW 31/125
Top Speed Tach Volts < 62 volts LOW 62/250
Top Speed Tach Volts < 125 volts HI 31/125
Top Speed Tach Volts < 250 volts HI 62/250