CDC482055UR-F EBM-Papst Industries Inc, CDC482055UR-F Datasheet - Page 4

• Manufacturer Part Number: CDC482055UR-F
• Description: DC FAN CONTROLLER 48V, RELAY ALARM
• Manufacturer: EBM-Papst Industries Inc

Specifications of CDC482055UR-F

• Thermocouple Type: 2m Long NTC Thermistor
• Operating Temperature Max: 75°C
• Operating Temperature Min: -20°C
• Output Voltage Max: 50V
• Svhc: No SVHC (15-Dec-2010)
• Contact Configuration: NC
• External: RoHS Compliant

210-OMI10878 Iss01
Installation Guide - DC Temperature Controller
Troubleshooting
In normal operation, the yellow LED will flash and the blue LED will be off. The following section is to help diagnose common
issues and interpret the different combinations of LED states.
Before referring to the guide, check that all connections are correct and secure and that the power setting jumper link and DIP
switches are in the correct position. It is assumed that the fan is known to be serviceable and is correctly installed.
A detailed technical specification for this controller and a list of ebm-papst fans which have been tested for compatibility is
available at www.ebmpapst.co.uk/datasheets
Symptom
Fan not running at power on
Fan starts then stops
Fan starts and runs near full speed
Fan running at full Speed
Fan speed not in expected range
Fan stops after running up
Fan stops then ramps up repeatedly
Fan running normally, Blue LED on
Inconsistent alarm indications
ebm-papst UK Ltd, Chelmsford Business Park, Chelmsford, Essex, CM2 5EZ
[phone] www.ebmpapst.co.uk [e-mail]
LED status
Both Off
Both On
Both Flashing
Both On
Yellow On
Blue Flashing
Both On
Yellow On or Off
Blue On
Yellow Flashing
Blue Off
Yellow On
Blue On
Yellow On
Blue On when fan stops
Yellow Flashing
Blue On
Yellow On
Blue On
Possible Reasons/Fixes
No power to controller, check connection and supply
Fan not connected or connected in reverse polarity.
Wattage jumper not fitted.
Supply voltage too high.
Temperature is below minimum set point.
Fan off at minimum set point selected on DIP switches.
Selected power range too low.
Soft start selected off.
Fan is drawing more power than expected during start up. Check power range selection and
possible try next range up. Check Fans back pressure.
Temperature at maximum set point.
Temperature sensor open or short circuit.
Wrong control profile selected.
Temperature sensor poorly positioned in system.
Excessive supply voltage or fan fault.
Selected power range too low.
Fan Alarm and/or Tacho input connection enabled on DIP switches, no connection to input
terminals.
More than one fan connected to Alarm and/or Tacho input terminals.
Issue 01