EZSV17
EZSV23
You will need:
Your EZServo
®
Controller/Driver, servo motor, and encoder.
A motor 2" (SV17) or 3" (SV23) or smaller rated at about 1/2
of supply voltage is best. Also see Encoder Note.
RS232 to RS485 Converter or USB to RS485 Converter, with
cables supplied
PC with port to match cable supplied, with USB driver
installed if USB to RS485 Converter is being used.
Power supply, 12 to 40V. For first-time EZServo users we
recommend a current-limited power supply set to 20V, 1A to
protect against miswiring.
HyperTerminal application
(For Windows 98, download
HyperTerminal Private Edition 4.0+ from www.hilgraeve.com.
This corrects echo problem in Windows 98 version.)
Crimp tool (recommended): Digikey part H9924-ND.
Otherwise, soldering equipment.
Small Philips screwdriver for operating address switch
If troubleshooting is required: ohmmeter, oscilloscope
Precautions
Observe all electrostatic discharge precautions to avoid
damaging circuit boards.
Allow at least 0.1" air gap when bolting EZServo to motor,
for cooling (larger version of the board).
Use 4-40 round standoffs to bolt EZServo to motor,
NOT hex (Hex standoffs will touch components).
DO NOT disconnect motor wires while power is on, to
avoid damage to circuit board.
DO NOT place EZServo board or RS485 Converter
on metal surface when powered (to prevent shorts).
DO NOT run Palm Pilot Hotsync on the computer. It
will take over the comm port.
Avoid bundling encoder or IO wires with motor power
wires, as this may cause noise pickup from motor
wires. If bundling is necessary, put motor wires in a
separate shielded twisted-pair cable.
-For 10' or longer, shield each IO line individually.
-If using ribbon cable, add grounds between signal
wires and motor wires.
Start with power supply OFF.
A quick guide to the EZServo
®
starter kit
This guide applies when using the RS232-to-RS485 Converter, or the USB-to-RS485 Converter after USB driver is installed.
Encoder Note
An encoder of 400-1000
lines/channel, giving 1600-
4000 quadrature encoder
counts per revolution, is
recommended. (Other line
counts could require
changing PID coefficients.)
1.
Connect power supply to RS485 Converter.
Important! On SV23 model, install J3 if power is less than 15V.
Turn power ON. Confirm current is less than 100mA.Turn power OFF.
2. Connect EZServo to RS485 converter.
If using EZ Start kit, use cable provided. If not using kit, wire mating 4-
pin connectors pin-to-pin per the markings on the connector. (See
Wiring Note below.)
Turn power ON. Ensure current is less than 0.25A, and green Life LED
blinks.
If not, look for bad power connection.
Turn power OFF
.
3. Set address switch firmly to number 1 with Philips screwdriver.
Turn power ON.
4. Connect RS485 Converter to the pc.
5. Start HyperTerminal or the EZCommander™ application (see
last page for HyperTerminal setup).
6. Issue the command /1P1000R <CR> and observe result. This
command tells motor to turn 1000 encoder counts and stop.
7. Turn power OFF.
Procedure continued next page.
Revision C1
Wiring Note
Always wire to the mating connectors supplied on
circuit board. Use crimp tool if you have it, or else
solder. (DO NOT solder to circuit board; damage is
likely. Also, DO NOT press in with a screwdriver,
because this makes unreliable connections.)
1 2 3 4
RS232 to RS485
Converter shown.
AB
2
8
12-40V
Power Supply
+
Typical board
shown. Yours
may vary.
Life LED
+
B A
EZServo
RS485 Converter
10
11
13
4
Computer
Comm Port
Jumper J3
Servo
Motor
DB9 or USB cable
supplied
Encoder
3
E Z S t a r t
E Z S t a r t
All Motion
www.allmotion.com
5501 Del Oro Court, San Jose, CA 95124 Telephone 408.460.1345 Email
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