Monitor Mode: Single Fan Connection; Monitor Mode: Multiple Fan Connection; Figure 8 - Typical Wiring Diagram For Monitor Operating Mode - Single Fan Monitoring; Figure 9 - Typical Wiring Diagram For Monitor Operating Mode - Multiple Fan Monitoring - Ebmpapst CN1116 Operating And Maintenance Instructions Manual

Modbus display & control (mdc)
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Operating and Maintenance Instructions

5.3.1 Monitor mode: single fan connection

Figure 8 – Typical wiring diagram for Monitor operating mode - single fan monitoring
CAUTION: Danger of damaging the fan if two power supplies are connected at the same time
Do not connect the fan's 10Vdc output to the controller if powering the controller from an external supply
It is not recommended to use the +10Vdc supply from a single fan to power the controller as the controller may
switch off if certain faults are experienced by the fan. Furthermore, the LCD brightness would be dimmed if using
only one 10Vdc 10mA supply. It is recommended that an external +24V DC power supply is used to power the
MDC unit for all installations.

5.3.2 Monitor mode: multiple fan connection

Figure 9 - Typical wiring diagram for Monitor operating mode - multiple fan monitoring

CAUTION: Danger of damaging the fan if two power supplies are connected at the same time
Do not connect the fan's 10Vdc output to the controller if powering the controller from an external supply
210-OMI14229-Iss2
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IMPORTANT:
Operation & Maintenance Instructions
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