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Chapter 5 - Fan control application
POWERXL DM1 SERIES VARIABLE FREQUENCY DRIVES MN040049EN—September 2021 www.eaton.com
Control I/O configuration
•
Run 240 Vac and 24 Vdc control wiring in separate conduit.
•
Communication wire to be shielded.
Table 21. Fan application default I/O connection.
DM1
External wiring Terminal Short name Name Default setting Description
Res
1 DI1 Digital input 1 Run forward Starts the motor in the forward direction.
2 DI2 Digital input 2 Run reverse Start the motor in the reverse direction.
3 DI3 Digital input 3 External fault Triggers a fault in the drive.
4 DI4 Digital input 4 Fault reset Resets active faults in the drive.
5 CMA DI1 to DI4 common Grounded Allows for sourced input.
6 A RS-485 signal A — Fieldbus communication (Modbus RTU, BACNet).
7 B RS-485 signal B — Fieldbus communication (Modbus RTU, BACNet).
8
AI1+
Analog input 1 0 - 10 V Voltage speed reference (programmable to 4 mA to 20 mA).
9 AI1- Analog input 1 ground — Analog input 1 common (ground).
10 GND I/O signal ground — I/O ground for reference and control.
11 AO1+ Analog output 1 Output frequency Shows output frequency to motor 0 - 60 Hz (4 mA to 20 mA).
12 GND I/O signal ground — I/O ground for reference and control.
13 10 V 10 Vdc reference output 10.3 Vdc +/- 3% 10 Vdc reference voltage.
14 24 V 24 Vdc control output 24 Vdc In/Out Control voltage input/output (100 mA max.).
18 R1NO Relay 1 normally open Run Changes state when the drive is in the run state.
19 R1CM Relay 1 common
20 R1NC Relay 1 normally closed
Default
Default
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