7
FIG. 3 – AC LINE VOLTAGE
JUMPER SETTING
FIG. 4 – MOTOR ARMATURE
VOLTAGE JUMPER SETTING
115VAC
230VAC
90VDC
180VDC
TABLE 5 – RELATIONSHIP of AC LINE INPUT AND MOTOR
VOLTAGE with J1A, J1B and J3 JUMPER POSITION
AC INPUT VOLTAGE
J1A, J1B
POSITION
J3 POSITION
MOTOR VOLTAGE
115
115
90
90
230
230
180
180
230
230
90*
90*
*A 90VDC motor can be used with a 230VAC line. However, speed range may be reduced and
motor overheating may result.
D. J4 - Tach-generator Voltage –
(Note: Selection of the jumper position is not required if
armature feedback is used.) Place J4 jumper in the position "7V", "20/30V,"
"50V"
that
corresponds to the tach-generator voltage in Volts/KRPM. Note: The tach voltage jumper
position is based on motor speed of 1,800 RPM.
For example, if the tach is 25V/KRPM and the motor speed is 3,600 RPM, use the "50V"
J4 position. For other tach-generator voltages and motor speeds, an external resistor
(RT) may be used as follows.
i.
Install resistor in series with either tach-generator lead.
ii.
Place J4 in "7V" position.
iii. The value of RT is calculated as follows.
RT = [(5.4 x Vt x S) - 68,000]
VT = Tach voltage in volts/1000 RPM
Choose the closest standard watt
S = Base Speed of motor in RPM
resistor value to the calculated value
E. J5 - Feedback Type –
The KBRG can be operated in either armature feedback
"AFB"
or tach-generator feedback "TFB." Armature feedback provides adequate load regulation
for most applications. For very precise performance, tach-generator feedback "TFB"
should be used. (Note: If tach feedback is desired, an external DC tach-generator must
be used and connected as per instructions.) (See section V J, p. 12 for tach-generator
wiring.) (Note: The IR Comp trimpot must be set to the minimum setting [CCW] for tach
feedback.)
F. J6 - Current Limit (CL) Mode –
The KBRG contains electronic current limiting that limits
the maximum DC current to the motor. (Note: Current Limit is established with the
selection of the J2 position and the setting of the Forward and Reverse CL trimpots "FWD
CL" and "REV CL.")