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Chapter 6 - Pump control application
POWERXL DM1 SERIES VARIABLE FREQUENCY DRIVES MN040049EN—September 2021   www.eaton.com
Table 36.  Pump application default I/O connection (continued).
DM1 PRO
External wiring Terminal Short name Name Default setting Description
Res
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
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.).
15 STO_com Safe torque common — Safe torque Off common.
16 STO2 Safe torque Off 2 — Safe torque Off 2 input.
17 STO1 Safe torque Off 1 — Safe torque Off 1 input.
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
21 R2NO Relay 2 normally open Fault Changes state when the drive is in the fault state.
22 R2CM Relay 2 common
Notes:
The above wiring demonstrates a SINK configuration.  The SW2 position 1 is set to ON.  If a SOURCE configuration is desired, wire 24 V to CMA and close the inputs to 
ground.  When using the +10 V for AI1, SW2 position 2 set to ON.
 AI1+ support 10 K potentiometer.