All Motion EZStepper EZ17 User manual

All Motion www.allmotion.com 30097 Ahern Avenue, Union City, CA 94587 Telephone [phone] Email [email protected] 012513
 EZ17
 EZHR23
 EZHR17
 EHR17EN
You will need:
 Your EZStepper® Controller/Driver and stepper motor.
 RS485 Converter: USB-to-RS485 or RS232-to-RS485, with
cable supplied.
 PC with port to match RS485 Converter being used (USB or
serial D). .
 Power supply, 12 to 40V. For first-time EZStepper users
we recommend a current-limited power supply to
protect against miswiring.
 Crimp tool (recommended): T-handle crimp tool, Digikey
part A9982. Otherwise, soldering equipment.
 Small Philips screwdriver for operating address switch
 If troubleshooting is required: ohmeter, oscilloscope
Precautions
 Observe all electrostatic discharge precautions to avoid
damaging circuit boards.
 Allow at least 0.1" air gap when bolting EZStepper to
motor, for cooling.
 Use 4-40 round standoffs to bolt EZStepper 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 EZStepper board or RS485 Converter
on metal surface when powered (to prevent shorts).
 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.
1. Download and install the EZCommander™ application from
www.allmotion.com/support.
2. If using USB-to-RS485 Converter, download and install appropriate USB
driver from www.allmotion.com/support.
3. Connect power supply to RS485 Converter. Ensure power is OFF. 
4. Connect EZ Stepper 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, for
example pin A to pin A. (See Wiring Note below.)
 Turn power ON. Confirm that green Life LED slowly blinks. If not, look
for bad power connection.
5. Set address switch firmly to number 1 with Philips screwdriver. 
6. Cycle power OFF/ON if address switch was moved in preceding step.
7. With USB cable from Converter to PC unplugged: Start the EZCommander
application (see other side of sheet for instructions if needed). Click Settings,
then Re-scan Ports. Note available ports, then click OK.
8. Connect RS485 Converter to a PC USB port with the cable supplied. 
9. In EZCommander, click Settings, then Re-Scan Ports. Select the new port that
becomes available, and click OK. (For RS232 converter, the new port will be
com1.) If no new port appears, a problem with the USB driver is indicated.
Re-install the driver for your system.
10. In EZCommander, click Send String 0 to issue the command /1&. Confirm
return message showing product name and firmware version. If return message
says “No EZStepper Found”, troubleshoot communications (page 2) before
connecting motor.
11. With power OFF, connect stepper motor to middle 
four pins of the motor connector as shown in
diagram. (See Wiring Note below.) If using unipolar
motor, leave center taps unconnected.
12. Turn power ON.
13. In EZCommander, click string 2 to issue the command /1A1000A0R 
(use /1A100000A0R for EZHR17EN or EZHR23ENHC). Confirm that the
motor goes back and forth.
You're on your way! For other commands and hookups, see the full
command set and wiring diagram on our website.
STEPPER
MB
MB
MA
MA
"MA" and "MB" are
marked on bottom
of circuit board.
CAUTION!
Always turn off power before
connecting or disconnecting motor
to avoid damaging circuit board.
A quick guide to the EZStepper
®
This guide applies using the USB-to-RS485 Converter or RS232-to-RS485 Converter.
NOTE: If using RS232 Converter,
disregard instructions for USB.
Troubleshooting: See next page.
EZ Start
Revision E1
A B
RS485
Converter
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
Typical board
shown. Yours
may vary.
USB-to-RS485
Converter shown.
A B
4
3
11
12-40V
Power Supply +
+ B A
Life LED
EZStepper
13
5
8
Stepper
Motor
Computer Port
USB or DB9 cable
supplied with Converter
For these products
Starting up

All Motion www.allmotion.com 30097 Ahern Avenue, Union City, CA 94587 Telephone [phone] Email [email protected] 012513
 Make sure address switch is detented exactly on position number 1.
(After resetting, power must be cycled to establish new address.)
 Re-check that correct com port is selected.
 Confirm good ground between PC and negative terminal of power
supply. First, measure resistance with power off; then check for voltage
drop with power on. Repair poor ground connections.
 Issue command /1& and verify that a response identifying the product and
firmware version is received. If ok, motor connection may be miswired or
loose. If not ok, re-install USB driver. Continue to next item if not resolved.
 Check continuity of communication data to EZStepper board at point 1
in diagram below. If not present, check at other points indicated.
Suspect failed component or faulty wiring/connector between point
where signal is absent and last point where signal is present.
If motor does not
respond to commands:
If motor misses steps at high speed:
 Increase either the Move current or the supply voltage.
To increase Move current, issue an "m" for Fast Move Current and/or "l"
command (lower case L) for Slow Move Current. Example: /1m75 = set
current to 75% max.
Step misses typically happen in the middle of a move, where the motor
"catches" in the beginning and end, but stalls in the middle.
If motor direction is not consistent:
 Check that coils of motor are securely connected at both ends.
This is typically caused when one of the coils has a loose connection.
EZ Stepper
+ B A
NOTE: If using RS232 Converter, disregard instructions for USB.
2Click the Settings button to open the Communications window.
• Click Re-Scan Ports; note available ports; then click OK to close.
1Open EZCommander.
3Plug USB cable into the PC.
• Click Settings button, then Re-scan Ports. A new comm port
will become available (will be com1 if using RS232 Converter).
•Select the newly available comm port and click OK to close the
Communications Window.
Command strings ↑Return messages ↑
4Issue commands :
• Enter string in a left-hand field.
• Press adjacent Send String button to issue command.
• See return message in field to right.
Start with communications
cable unplugged.
Example
message
NOTE: USB cable
is disconnected for
this step.
NOTE: If using RS232 Converter, disregard instructions
for USB.
EZ Bus cable
Pins A & B
1
2Pins A & B
At both sets of A & B pins,
confirm 3V P-P pulses
centered on +2.5V. See
points 1 and 2.
NOTE: Signal presence at point 1
suggests problem in motor, EZStepper
board, or wiring to motor.
USB-to-RS485 Converter
shown.
23
If using
RS232-to-485
Converter

At DB9 connectors pins 3 and 2,
see 12V P-P pulses 100 µsec wide
(@9600 baud). Check at cable end
and at Converter connector.
A B
Troubleshooting
EZ17,23/Page 2
Using EZCommanderTM