Calculated Industries 6250 Guide de l'utilisateur télécharger pdf (Page 123)

108

6250 Servo Controller User Guide

Reducing Electrical Noise

For detailed information on reducing electrical noise, refer to Appendix A.

Common Problems & Solutions

The following table presents some guidelines to help you isolate problems with your motion

control system. Some common symptoms are listed along with a list of possible causes and

remedies.

❏ Look for the symptom that most closely resembles what you are experiencing.

❏ Look through the list of possible causes so that you better understand what may be preventing

proper operation.

❏ Start from the top of the list of remedies and use the suggested procedures to isolate the

problem.

❏ Refer to other sections of the manual for more information on 6250 set up, system

connections, and feature implementation. You may also need to refer to the

6000 Series

Software Reference Guide.

Problem Cause Solution

Erratic operation 1. Electrical Noise

2. Improper shielding

3. Improper wiring

1. Reduce electrical noise or move the 6250 away from noise source

(refer also to Appendix A)

2. Ground Joystick Release input

3. Check wiring for opens, shorts, and mis-wired connections

LEDs:

DRIVE LED(s) is red

1. Shutdown input active

2. No AC power to drive

3. Drive not connected

1. Issue DRIVE11 command

2. Check AC power to drive

3. Connect drive

LEDs:

STATUS LED is off

1. No AC power 1. Check AC power

LEDs:

STATUS LED is red

1. Internal Board Monitor Alarm (BMA)

has detected a non-recoverable fault

1.a. Recycle power to the 6250

1.b. Ensure +5V is not shorted to GND on the I/O connections

Missing Encoder Counts 1. Improper wiring

2. Encoder slipping

3. Encoder too hot

4. Electrical noise

5. Encoder frequency too high

1. Check wiring

2. Check and tighten encoder coupling

3. Reduce encoder temperature with heatsink, thermal insulator, etc.

4.a. Shield wiring (refer also to Appendix A)

4.b. Use encoder with differential outputs

5. Peak encoder frequency must be below 1.2 MHz post-quadrature;

peak frequency must account for velocity ripple

Motor does not move in

joystick mode

1. Joystick Release input not grounded

2. Improper wiring

1. Ground Joystick Release input

2. Check wiring for opens, shorts, and mis-wired connections

Motor Runaway

(if encoder counts positive

when turned clockwise)

1. Direction connections reversed 1. Switch CMD- with the CMD+ connection to drive

No Motion 1. Status LED off or red

2. Limits engaged

3. Drive fault level incorrect

4. Improper wiring

5. Load is jammed

6. No torque from motor

7. Maximum position error exceeded

8. Drive has activated the Drive fault

input

9. ENBL input is not grounded to GND

1. See status LED problems above

2. Move load off of limits or disable limits with LHØ,Ø

2.b. If using soft limits, make sure LSCW > LSCCW

3. Set drive fault level using DRFLVLxx (for S, Z, and K drives, use

DRFLVL11)

4. Check command, shutdown, drive fault, & limit connections

5. Remove power and clear jam

6. See problem:

No Torque

7. Issue the DRIVE1 command to the axis that exceeded the position

error limit

8.a. Check to see if TAS bit #14 is set, and check the DRFLVL command

to ensure the drive fault level is correct

8.b. Inspect the drive to determine the cause

9. Ground the ENBL input to GND and reset

No RS-232C

Communication

1. Improper RS-232C Interface or

communication parameters

2. RS-232C disabled

3. In daisy chain, unit may not be set to

proper address

1. See

RS-232C Troubleshooting

section

2. Enable RS-232C with the E command (all units if daisy-chained)

3. Verify DIP switch settings (see

Optional DIP Switch Settings

Chapter 8), verify proper application of the ADDR command

No Torque 1. Improper wiring

2. No power to drive

3. Drive failed

4. Drive faulted

5. Drive shutdown

1. Check wiring to drive enable input on drive as well as other system

wiring

2. Check power to drive

3. Check drive status

4. Check drive status

5. Enable drive with DRIVE11

Power-up Program does

not execute

1. ENBL input is not grounded to GND

2. STARTP program is not defined

1. Ground the ENBL input to GND and reset

2. Check the response to the STARTP command. If no program is

reported, define the STARTP program and reset

Program execution: stops

at the INFEN1 command

1. INFEN1 enables drive fault

monitoring, but the drive fault level

(DRFLVL) command is set incorrectly

for the drive being used.

1. Issue the correct DRFLVL command for your drive (refer to the

DRFLVL command)

1 2 ... 118 119 120 121 122 123 124 125 126 127 128 ... 137 138

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Calculated Industries 6250 Guide de l'utilisateur Page 123

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