CDC482055UR-F ebm papst

Issue 01 Installation Guide - DC Temperature Controller Description Traditional fan speed controllers use voltage-chopping which can lead to reduced life expectancy, damage to motor electronics and reduced performance. The DC Temperature Controller regulates the electrical power supplied to the fan to maintain optimum performance and reliability. For temperature sensitive speed control of 12V, 24V and 48V ebm-papst DC compact fans*. Fan speed increases with temperature between 20C and 40C or 35C and 55C according to the selected profile. Alarm output through Open Drain connection or optional relay. Supplied complete with 2 metre long NTC thermistor. *Note: Due to variations in motor electronics, a small number of mainly high speed fans may not work correctly with this controller. A list of fans which have been tested for compatibility is attached to this document. Specification Alarm Relay Nominal data Type VDC VDC VDC mA C C %RH mA VAC VDC A W 12 volt 12 11.4 12.6 36 -20 75 95 500 50 50 1 20 24 volt 24 22.8 25.2 37 -20 75 95 500 50 50 1 20 48 volt 48 47.0 49.0 40 -20 75 95 500 50 50 1 20 CAUTION: During normal operation some controller components become very hot. Operation Fan speed is controlled according to the selected profile, as shown in the chart opposite. The fan will run at approximately 15% of maximum speed below the minimum temperature and increase to 100% at the maximum temperature. If preferred, DIP switch 4 can be used to switch the fan off below the set point. 210-OMI10878 Iss01 Nominal voltage Min voltage Max voltage Max current Min ambient Max ambient Max humidity (non-condensing) Open drain alarm Max current Max AC voltage Max DC voltage Max current Max loadIssue 01 Installation Guide - DC Temperature Controller An alarm output is provided through either an Open Drain connection or a normally closed relay. The alarm is activated if the upper temperature limit is reached or if the controller detects an open or short circuit sensor on the NTC temperature input. Under sensor failure conditions the fan will run up to full speed. A fan fail alarm output can also be activated when using three wire fan types by monitoring the Tacho or Alarm output from the fan. Note: The Tacho or Alarm output from only one fan can be monitored. Connection of multiple fans in this way will cause spurious alarm indications. If the voltage input limit to the controller or the current output limit to the fan is exceeded, the controller and fan will switch off to prevent risk of damage and an alarm indication is given. A yellow LED flashes during normal operation. A blue LED indicates an alarm condition. Connection Notes Open Drain Alarm Output: Connect the alarm output to the input of the monitoring device then connect a pull-up resistor (typically 100K ) between this connection and the supply voltage of the monitoring device. During normal operation the alarm output will be 0 volts. In an alarm condition the output will be the same as the supply voltage of the monitoring device. Relay Alarm Output: This is a volt free contact that is held closed during normal operation and opens when an alarm condition is detected. Temperature sensor: The 0 volt wire of the sensor must only be connected to the terminal provided on the controller and not to any other 0 volt source. Fan Supply: The fan must be only by connected to the terminals provided on the controller or it will not be able to monitor and regulate the fan speed correctly. 210-OMI10878 Iss01