12V Victor 888 User Manual
12V Victor 888 User Manual
The Victor speed controllers are specifically engineered
for robotic applications. The high current capacity,
low voltage drop, and peak surge capacity make the
Victor ideal for drive systems while its braking options
and precise control meet the demanding needs of arms
and lift systems. This controller safely handles the high
continuous current draws and extreme current surges
produced by competition robots. The innovative FET
switching architecture and an integral cooling fan ensures
cool FET junction temperatures. The low voltage drop and
high switching speed ensures the motor receives maximum
power, providing significant improvements in acceleration,
direction changes, and lifting torque. The LED indicator
will be GREEN in ‘full-forward’ condition, RED in ‘fullreverse’ and ORANGE while in neutral.
Fan GND (BLK)
M
GN
TO BATTERY GND
TO MOTOR
TO BATTERY 12V
M
12V
WRB
PWM EXTENSION CABLE
TO RECEIVER PWM OUT
BC
Brake/Coast Jumper
Cal Button
LED Indicator Status
• Green = Full Forward
• Orange = Neutral/Brake
• Red = Full Reverse
• Flashing Orange = no PWM
LED Indicator
Wiring Guidelines
1. The fan must be wired so it is always ON when the
Victor is ON.
2. Attach the fan wires and connect to the appropriate
voltage.
3. The input and output wires should be 10AWG wire
minimum and firmly connected to ensure low voltage
drop and minimal temperature rise.
4. Use circle lugs designed for your wire size. The
lug should have a hole designed for a #6 or #8
screw. If the center hole is too large, (#10 or
larger) inadequate mechanical contact may result in
excessively high resistance and temperature rise.
5. Check all lug connection after crimping and soldering.
You should not be able to pull the lug off the wire with
your hands.
6. Once the input and output wires are firmly connected,
tie the wires using tie straps within 2” of the Victor.
This will ensure the wires do not move and loosen the
connections.
0113
Page 1 of 5
WARNING: BEFORE APPLYING POWER:
1. Ensure the input connections are not reversed.
Connecting 12V and GND backwards will destroy the
unit.
2. Ensure that there is not a short circuit on the output.
A short circuit will destroy the unit.
3. Ensure there is a circuit breaker either inline with
the 12V power input to the speed controller, or inline
with the motor. Use an appropriate circuit breaker for
your application to ensure that long term exposure to
a stalled motor (high currents) will not overheat the
Victor.
4. Ensure that the fan is wired to the 12V and GND
connections for continuous operation when power is
applied.
12V Victor 888 User Manual
PWM Connection to cRIO Digital Sidecar
Mounting Guidelines
You will need (1) PWM extension cable.
1. The male PWM cable connector connects to the speed
controller. The Victor housing is design to provide a
firm connection. Trim the shroud corners slightly if
necessary for insertion into the Victor.
2. The PWM extension cable should be installed with the
black wire towards the fan.
3. Attach the female connector to a cRIO Digital Sidecar
PWM OUT header. Standard Radio Controlled PWM
connectors are fragile. Use caution when inserting
and removing the PWM cable so the contacts on both
connectors are not damaged.
You will need (2) #4 or #6 screws.
1. The Victor can be installed in any orientation.
2. The speed controller must have adequate space above
the fan for airflow, a minimum of 2 inches.
3. Do not over-tighten the mounting screws through the
speed controller. A snug connection will hold the speed
controller in place without crushing the case.
PWM Connection to VEX Microcontroller
You will need (1) PWM extension cable and (1) 3-pin
male-to-male header, such as 3M 929647-02.
1. The male PWM cable connector connects to the speed
controller. The Victor housing is design to provide a
firm connection. Trim the shroud corners slightly if
necessary for insertion into the Victor.
2. The PWM extension cable should be installed with the
black wire towards the fan.
3. Insert a 3-pin male-to-male header into the VEX
Microcontroller 3-wire motor port. Attach the female
PWM connector to the male-to-male header. The
black wire of the header goes to the outside of a PIC
or Cortex controller. Use caution when inserting and
removing the PWM cable so the contacts on both
connectors are not damaged.
PWM Connection to an RC Hobby Control System
You will need (1) PWM extension cable or PWM Signal
Driver.
1. Use a PWM Signal Driver to ensure the signal from
your receiver is Victor compatible. Use the PWM
Driver ONLY if the receiver center wire is +5VDC.
The receiver must provide the standard 1 – 2 ms
PWM Input Pulse.
2. The male PWM cable connector connects to the speed
controller. The Victor housing is design to provide a
firm connection. Trim the shroud corners slightly if
necessary for insertion into the Victor.
3. The PWM extension cable should be installed with the
black wire towards the fan.
4. Standard Radio Controlled PWM connectors are
fragile. Use caution when inserting and removing the
PWM cable so the contacts on both connectors are not
damaged.
Page 2 of 5
Calibration Instructions
The Victor is pre-calibrated with values compatible with
a cRIO Control System. You can re-calibrate to achieve
‘full forward/reverse’ from your joystick movement if
necessary.
NOTE: While in calibration mode, the Victor will record
the max PWM value detected as ‘full forward’, the min
PWM value as ‘full reverse’, and ‘neutral’ will be the
PWM value recorded at the release of the Cal button. The
following steps will guide.
User Calibration:
1. Power ON the speed controller.
2. Press and hold the Cal button. After a moment, the
LED indicator on the Victor will begin alternating
between RED and GREEN to indicate a cal mode.
3. While continuing to hold the Cal button, move the
joystick to the maximum and minimum positions.
This can be done in any order and as many times as
desired.
4. While continuing to hold the Cal button, return the
joystick to center (neutral position).
5. Release the Cal button.
6. A flashing GREEN indicator confirms a successful
calibration.
7. A flashing RED indicator denotes an unsuccessful
calibration.
An unsuccessful calibration occurs when either:
a) Insufficient joystick travel was detected in forward
and/or reverse.
b) The trim tab is too far from center.
c) The Joystick is too far from center when Cal is
released.
Resetting Calibration to Factory Pre-calibration:
1. Power OFF the speed controller.
2. Press and hold the Cal button.
3. While continuing to hold the Cal button, Power ON the
speed controller.
4. A flashing GREEN indicator
denotes calibration is
reset. Release the
Cal button.
12V Victor 888 User Manual
Brake / Coast Configuration
The Brake / Coast jumper is used to set the speed
controller’s action during a neutral condition. The Brake
provides significant resistance to motor rotation and is
recommended for motors driving linkages and arms that
can be back-driven by gravity or other external forces.
The speed controller checks the status of the jumper
approximately 60 times per second. This allows the user
to change from brake to coast during operation. A limit
switch may be connected to the jumper connector instead
of the jumper. The limit switch can be triggered by various
means including the use of a servo.
Page 3 of 5
Brake/Coast Guidelines: Reference Diagram
1. The jumper should always be installed. If you lose the
jumper, a standard computer jumper will work.
2. The Coast condition (Jumper on two Pins near “C”)
sets the output to an open circuit during neutral.
3. The Brake condition (Jumper on two pins near “B”)
sets the output to a short across the motor leads
during neutral.
12V Victor 888 User Manual
Troubleshooting
Indication: No ORANGE indicator on power up.
Problem: Input power issue or joystick trim tab off center.
Possible Solutions:
1. Disconnect PWM cable.
2. If indicator blinks ORANGE, the PWM value that
was being received is either between ‘neutral’ and ‘full
forward’, or between ‘neutral’ and ‘full reverse’. Check
joystick trim tab to ensure the controller is not in a
partial forward or a partial reverse condition. If no
change, check that the joystick and receiver channels
match.
3. If indicator remains off, check +V or GND
connections for voltage and proper polarity.
Indication: Flashing ORANGE indicator on power up.
Problem: No PWM signal.
Possible Solutions:
1. Ensure the transmitter and receiver are powered ON.
2. The PWM cable may be improperly connected.
Check wire color-coding at each end. Check that the
connector is not off a pin at the receiver end.
3. Check for a good PWM signal by connecting a known
good servo to the PWM extension cable. If the servo
does not move, this can indicate either:
a) a faulty receiver
b) an improperly connected cable
c) a bad PWM extension cable
Note: The servo requires that 5V be present on the center
pin of the PWM cable. This connection is not required for
the Victor.
Indication: Flashing RED indicator after calibration.
Problem: Calibration Failed.
Possible Solutions:
1. Inadequate travel in forward or reverse. Repeat the
calibration procedure and move the joystick further
forward and/or further reverse.
2. The joystick trim tab is NOT centered. Neutral cannot
be extremely far from center.
Indication: No power output from the speed controller
although the indicator LED works.
Problem: Possible internal damage.
Possible Solutions:
If the indicator on the Victor is operating properly and
there is no output, the Victor may be internally damaged.
Page 4 of 5
This condition is typically caused by a short circuit on
the output or there has been an over-current condition to
cause a failure.
Check the following:
1. Ensure the indicator is changing between ORANGE,
RED and GREEN with joystick movement.
2. Disconnect the motor and check the output (M+ to
M-) with a voltmeter. The meter should read between
+ Battery voltage with corresponding full range
joystick movement.
If the indicator is working properly and the outputs are
not working properly, the speed controller is probably
damaged. The final test to determine if the Victor is
damaged is to replace it with another Victor.
Indication: No power output from the speed controller
and the indicator does NOT work.
Problem: No input power or possible internal damage.
Possible Solutions:
If the indicator on the Victor is not operating properly and
there is no output, the Victor may be internally damaged.
This condition is typically caused by no input power or a
reverse polarity on the input.
Check the following:
1. Disconnect the output wires.
2. Ensure the indicator on the Victor will not illuminate
at any joystick position.
3. Check the input at the Victor (+BATTERY to GND)
with a voltmeter.
If the indicator is not working properly and the input is
good, the speed controller is probably damaged. The
final test to determine if the Victor is damaged is to
replace it with another Victor.
CAUTION: Prior to replacing a potentially damaged
speed controller, ensure that the wires connected to
the output are not shorted and the input is not
reversed. Also verify that neither of the motor output
leads are shorted to the chassis of the motor and/or
the robot.
12V Victor 888 User Manual
FCC Compliance Statement (United States):
ICES-003 Compliance Statement (Canada):
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
This Class B digital apparatus complies with Canadian
ICES-003.
Cet appareil numérique de la classe B est conforme à la
norme NMB-003 du Canada.
Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s
authority to operate the equipment.
Note: This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause
harmful interference to radio or television reception,
which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference
by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and
receiver.
– Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV
technician for help.
APPENDIX A: Document Version History
Date Changes
2012-10-31 Initial Release
2013-01-17 Added FCC, ICES Statements
Page 5 of 5
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement