Bell & Gossett P2001489 Integrated Technologic with Sensorless Control - Manual (Page 22)

Parameter number Description Set to
6-15 Terminal 53 High Ref./Feedb. Value Maximum motor speed. For example,
3450 Hz.
6-17 Terminal 53 Live Zero Disabled.
20-00 Feedback 1 Source No Function
* Set switch A53 = U
Control from external PLC/BMS through Analog Input
This setup allows the controller to receive either the process variable, the setpoint or a
speed reference from an external control source such as a PLC or BMS controller. The
output from the external control device can be either a voltage or current output signal.
Be sure to set the analog input configuration switches based on the type of output signal.
The diagram below shows the connections for an external reference signal.
Figure 12: Terminals connections for external control source
Table 6: Parameter settings for using an external control signal
Parameter Number Parameter Description For process variable from
BMS/PLC*
For setpoint from BMS/
PLC**
For speed reference from
BMS/PLC***
1-00 Configuration Mode Closed Loop Closed Loop Open Loop
3-15 Reference 1 Source No Function Analog Input 53* Analog Input 53*
6-14 Terminal 53 Low Ref./
Feedb. Value
Minimum value of process
variable. For example, for a
0-40psi DP transducer, set
to 0.
Minimum reference/
setpoint value. For
example, for a 0-40psi DP
transducer, set to 0.
Minimum motor speed.
For example, 0 RPM.
6-15 Terminal 53 High Ref./
Feedb. Value
Maximum value of process
variable. For example, for a
40psi DP transducer, set to
40.
Maximum reference/
setpoint value. For
example, for a 40psi DP
transducer, set to 40.
Maximum motor speed.
For example, 3450 RPM for
a 2 pole motor.
6-17 Terminal 53 Live Zero Enabled Enabled Disabled
20-00 Feedback 1 Source Analog Input 53 Select as appropriate for
application. This can be any
selection except the setting
of parameter 3-15.
No Function
20-12 Reference/Feedback Unit Select as appropriate for
application. For example,
set to psi when using
pressure feedback.
Select as appropriate for
application. For example,
set to psi when using
pressure reference.
NA
20-13 Minimum Reference/
Feedback
Minimum transducer
feedback value. For
example, for a 0-40psi DP
transducer, set to 0 psi.
Minimum reference/
setpoint value. For
example, for a 0-40psi DP
transducer, set to 0 psi.
NA
Electrical Installation
20 Integrated Technologic ® with Sensorless Control INSTRUCTION MANUAL