Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 55)

Configuring the Speed/Voltage Loop 5-7
ANALOG TACH GAIN ADJ
(P.201)
Scales the analog
tachometer feedback
signal after it has
been conditioned by
the drive hardware.
Typically, it will be
1.000. Parameter Range: 0.750 to 1.250
Default Setting: 1.000
Parameter Type: Tunable
OIM Menu Path(s): Speed/Voltage Loop ( SPD )-Speed / Voltage Loop
( SPD ) Feedback
Important: Adjust the zero point ( ANALOG TACH ZERO ADJ (P.202)) before
configuring gain.
ANALOG TACH ZERO ADJ (P.202)
Removes any offset
from the analog
tachometer feedback
signal. Parameter Range: –200 to + 200
Default Setting: 0
Parameter Type: Tunable
OIM Menu Path(s): Speed/Voltage Loop ( SPD )-Speed / Voltage Loop
( SPD ) Feedback
If ANALOG TACH FEEDBACK (P.291) is not equal to zero when the drive is stopped,
adjust ANALOG TACH ZERO ADJ up or down until ANALOG TACH FEEDBACK (P.291) is
equal to zero.
ANLG TACH VOLTS /1000 (P.203)
Analog tachometer
scaling from the
tachometer
nameplate in volts
per 1000
RPM .
Parameter Range:* 18.0 to 200.0 VOLTS /1000 RPM
Default Setting: 18.0 VOLTS /1000 RPM
Parameter Type: Configurable
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) – Speed/Voltage Loop
( SPD ) Feedback
Units are volts DC for DC tachometers or volts AC RMS for AC tachometers.
Use of an AC tachometer requires the AC Tachometer Feedback kit.
Whenever ANLG TACH VOLTS /1000 is changed, you should check the positions of
jumpers J11 and J14 to make sure they are set as indicated by J11 ANLG TACH VLT
SCL (P.792) and J14 ANLG TACH VLT RNG (P.793). The tachometer wiring might also
need to be changed. See the hardware manual for more information.
*Depending on the setting of TOP SPEED (P.011), the high limit might be less than
200.0 to prevent the tachometer voltage from exceeding 250V.