Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 40)

switches based on the type of output signal. The diagrams below show the connections
for an external speed command.
• Speed control mode can be configured using the Start-Up Genie.
Figure 23: Connections for speed control with external potentiometer
Figure 24: Connections for speed control with PLC or BMS
Table 8: Parameters for speed control from external potentiometer, PLC or BMS
Parameter number Description Set to
1-00 Configuration Mode Open Loop
3-15 Reference 1 Source Analog Input 53
3-02 Minimum Reference Set to value corresponding to desired
speed at the minimum reference
3-03 Maximum Reference Set to value corresponding to desired
speed at the maximum reference
3-15 Reference 1 Source Analog Input 53***
6-10* Terminal 53 Low Voltage* 0 V
6-11* Terminal 53 High Voltage* 10 V
6-12** Terminal 53 Low Current** 4 mA
6-13** Terminal 53 High Current** 20 mA
6-14 Terminal 53 Low Ref./Feedb. Value Set to value corresponding to the
commanded speed at the low
voltage/current.
6-15 Terminal 53 High Ref./Feedb. Value Set to value corresponding to the
commanded speed at the high
voltage/current.
6-17 Terminal 53 Sensor Fault Disabled
2000 Feedback 1 Source No Function
Electrical Installation
38 Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL