| Code | Issue | Suggested Action | |------|-------|------------------| | | Mains supply voltage too low | Check the power supply to the control unit. | | E11 | Safety edge error | Check the pneumatic hose for kinks or damage; inspect the micro-switch inside the door. | | E24 | General safety error | Refer to the full service manual for an in-depth diagnosis. |
: Use the Up or Down buttons in "hold-to-run" mode to align the door's bottom rubber seal with the 1-meter mark. Safety Test
If the operator fails to function correctly, check these common fault points: Probable Cause No power supply Check fuses and main switch Door stops immediately Safety device triggered Check photocells or safety edge Door moves wrong way Phase rotation is wrong Swap two incoming power phases Limits not holding Loose cam screws Re-adjust and tighten cams
Physical connection cables: The motor and control unit are connected by a specific wiring diagram, with the drive unit often including a 10-meter connection cable and a 1.5-meter power cable. crawford cdm9 950 installation manual
Inspect the encoder cable connection at both the motor and control board.
: If fuses blow during the first use, it's often a "flashover" in the electric motor rather than a control board failure.
The official manual warns: "It is important for the safety to persons to follow these instructions. Save these instructions". It is crucial to follow these guidelines at all times: | Code | Issue | Suggested Action |
The manual requires verifying that the pinch guard and manual release function correctly post-installation to prevent trapping.
The manual instructs users to mark a 1-meter point on the door frame and use the SW1 switch to initiate "hold-to-run" mode to set limits.
Execute one full, uninterrupted cycle (fully open to fully closed). During this cycle, the intelligent microprocessor maps the exact force required at every point of travel, setting the safety force limitations automatically. 5. Maintenance and Troubleshooting | : Use the Up or Down buttons
If you are using the CDM9 950 to fire an SCR power regulator:
Whether you are a seasoned controls engineer or a maintenance technician on a new line, always keep the manual open to the wiring diagram page during installation. And remember: when in doubt, measure twice, wire once, and consult the official documentation before applying power.