Additional Information Continued
Symptom | Possible Cause | Possible Remedies | |
No RS232 commu- | If the keypad works, the RS232 port | Refer to Section 5, “Configure Serial Communications”. | |
nication but keypad | is working. Something else is wrong | Verify PC COM port is set to 9600 baud, 8 data bits 1 stop bit, | |
works. | (wiring, configuration, address). | no parity. | |
RS232 communica- | The keypad is disabled. | Verify that you do not have an RS485 version. | |
tion and keypad do |
| Enable the keypad by the switch on back of keypad. | |
not work. |
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| |
The serial port is not working. | Contact Baldor. | ||
| |||
“Hit A Limit” | A limit switch has been activated. | Either the motion commanded was not correct, or the EOT | |
|
| switch is incorrectly positioned on your system. | |
“Amplifier Fault” | Multiple drive faults have occurred. | The fault can be determined with the keypad or by using serial | |
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| status commands (SS, SA, SD). | |
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| |
“Over Temperature | Internal Fan is not operating or | Remove obstruction, or clean tunnel by removing unit, use | |
Fault” | Heatsink Tunnel is clogged or | screwdriver to prevent the fan from turning, and blow shop | |
| restricted. | air through the tunnel. Return unit to installation. | |
| Ambient air in cabinet is too hot. | If multiple units are installed within the enclosure, ventilation | |
|
| must be adequately to remove heat. | |
| The fan does not operate. | With power off, verify the internal fan connections. If properly | |
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| connected, the fan may have failed. Contact Baldor. | |
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| |
“Over Current Fault” | Motor is miswired or damaged. The | With power off verify all connections. | |
| LinStep+ has short circuit protection, | Verify current setting is correct for the motor rating. | |
| but you must correct the problem to | Verify the motor phases are not open or shorted (phase to | |
| clear the fault. | phase and phase to ground). The resistance in each phase | |
|
| should be about the same and only a few ohms. If the | |
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| phases are open or have a large resistance, the motor is | |
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| probably damaged and should be replaced. | |
“Over Voltage Fault” | Excessive bus voltage. Usually | Eliminate the regen event by reducing the load or make the | |
| caused by a regen condition that | move less aggressively by reducing the commanded | |
| overwhelms the internal power | acceleration or velocity. | |
| dump circuit. |
| |
| It can also be caused by high line | Verify AC line voltage is within the limits. | |
| voltage, or voltage spikes. |
| |
“Interlock Fault” | Motor connector does not have an | Connect motor connector with Interlock. | |
| interlock jumper, or motor has been |
| |
| disconnected. |
| |
“Following Error” | Motor stalled. | Confirm proper motor configuration (current, AR, mH). | |
|
| Make a less aggressive move. | |
| Wrong encoder resolution set. | Verify the encoder settings are correct. Incorrect settings can | |
|
| cause a following error. | |
“Encoder Wired | Encoder position is changing opposite | Verify motor and encoder wiring. Reverse phases of either | |
Backwards” | the commanded move. | motor or encoder. Contact Baldor for assistance. | |
“Encoder Fault” | Attempted closed loop motion and | Verify encoder wiring. | |
| encoder position is unchanged. |
| |
“Error Finding Home” | Both EOT switches were activated | Verify home switch connections and configuration (NORM | |
| without finding the home switch. | OPEN or NORM CLOSED). | |
“Invalid Program” | Attempted to “call” an empty program | Verify program number, or define program “called”. | |
| (i.e. GT, GS). |
| |
“Program Too Large” | Program length exceeds 1024 bytes. | Divide program into smaller programs or reduce program size. | |
“Insufficient Memory” | All stored user programs exceed 60K. | Reduce program size, or delete programs. | |
“Invalid Program #” | Program number exceeds 400 or | Verify program name and number. | |
| program name does not exist. |
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MN1853 |