Carotron BLAZER IV, Instruction Manual, Page: 9 / 42

Programming & Adjustments
4
TB3 – 7 & 8 Auxiliary Reference
Connections:
Terminal 7 is a –10 VDC source
and terminal 8 is a +10 VDC source. These
terminals are provided for applications that
require bipolar reference signals. NOTE: If
these terminals are used to connect a pot to the
drive, remember that the drive's internal
directional logic is being defeated. Therefore,
the directional LEDs may not indicate the
proper direction of the motor.
TB3 – 9 Tachometer Input: Operation of the
control in tachometer feedback requires
connection of a 7 or 50 VDC per thousand
RPM tachometer to terminal 9. The tachometer
inputs are polarity insensitive allowing the
tachometer to be wired with either the positive
or negative lead connected to terminal 9 and
the other lead connected to common. See
connection diagrams in Section 7.
TB3 – 10 Circuit Common: This common
connection is provided for use with either
tachometer or encoder feedback inputs.
TB3 – 11 & 12 Encoder Input: An optional
motor mounted 300 PPR encoder may be
connected to these terminals. See connection
diagrams in Section 7. Terminal 11 is for the
encoder signal input. Terminal 12 is a +12
VDC, 100 mA supply for powering the
encoder.
4.1 Programming Jumpers:
Power Board
J1 – Armature Current/Torque Range:
Used to program the control according to the
motor nameplate full load armature current.
The CURRENT LIMIT pots have a range up
to 150% of the current level selected. Refer to
the following table to select proper jumper
location based on motor horsepower and
control input voltage.
BRC702 BRC705 JUMPER
POSTION
115
VAC
230
VAC
230
VAC
3 AMP ¼ HP ½ HP ½ HP
5 AMP ½ HP 1 HP 1 HP
8 AMP ¾ HP 1 ½ HP 1 ½ HP
10 AMP 1 HP 2 HP 2 HP
15 AMP N/A N/A 3 HP
25 AMP N/A N/A 5 HP
J2 – Dynamic Brake Selector: For dynamic
braking models, this selector should be set to
the corresponding input voltage.
WARNING! Improper selection can cause
serious damage to control!
Note:
Not applicable for Model BRC705.
J3 – Armature Feedback Voltage Selector:
Designates the armature feedback voltage level
according to the A. C. line voltage to be used.
Position at 115 VAC for 115 VAC or 230 VAC
for 230 VAC input.
Note: Not applicable for Model BRC705.
J4 & J5 – A. C. Input Voltage Jumper: To
program the power supply transformer according
to the A. C. line voltage to be used. Position each
at 115 for 115 VAC input or VAC for 230 VAC
input.
Note: Not applicable for Model BRC705.
8