Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 39)

Parameter Number Parameter Description Set To
20-12 Reference/Feedback Unit Select as appropriate for application.
For example, set to psi when using
pressure feedback.
20-13 Minimum Reference/Feedback Minimum transducer feedback value.
For example, for a 0-300psi
transducer, set to 0.
20-14 Maximum Reference/Feedback Maximum transducer feedback
value. For example, for a 300psi
transducer, set to 300.
* To use AI 53, configure parameters 6-14, 6-15, 6-17
Table 7: Parameters for an additional transducer used for monitoring
Parameter number Description Set to
0-24 Display Line 3 Large Ext. 1 Feedback [Unit]
21-14 Ext. 1 Feedback Source Analog Input 54*
21-10 Ext. 1 Ref./Feedback Unit Select as appropriate for application.
For example, set to psi when using a
pressure transducer.
21-11 Ext. 1 Minimum Reference Minimum transducer feedback value.
For example, for a 0-300psi
transducer, set to 0 psi.
21-12 Ext. 1 Maximum Reference Maximum transducer feedback
value. For example, for a 300 psi DP
transducer, set to 300 psi.
6-24* Terminal 54 Low Ref./Feedb. Value Minimum transducer feedback value.
For example, for a 0-300 psi
transducer, set to 0.
6-25* Terminal 54 High Ref./Feedb. Value Maximum transducer feedback
value. For example, for a 300 psi
transducer, set to 300.
6-27* Terminal 54 Sensor Fault Disabled
* To use AI 53, configure parameters 6-14, 6-15, 6-17 and set 21-14 to Analog Input 53
Speed control through an analog input
The controller can be configured for speed control through an analog input. The
controlling source can be either an external control device such as a PLC, BMS (building
management system) or potentiometer. The output from the external control device can
be either a voltage or current output signal. Be sure to set the analog input configuration
Electrical Installation
Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL 37