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System configuration is set by navigating to the keypad Main Menu item CHANGE PARAMETER
VALUES > CHANGE INTERFACE PARAMETERS > SYSTEM CONFIG. Refer to Section 5.1,
Changing Parameter Values, and Table 16 for detailed instructions. Below is a brief description of each
configuration setting:
• System Configuration = 0: Basic RUN/STOP operation. This is the factory default configuration for
basic operation of the drive that allows RUN/STOP control of the motor in AUTO mode using a dry
contact on AUX1 and/or AUX2.
CAUTION: By default, AUX1 and AUX2 are programmed to be always in RUN mode. See
parameters AUX1 SELECT and AUX2 SELECT to change this setting.
System Configuration = 1: Analog Constant Pressure. Use this setting to operate analog constant
pressure systems with a 4-20 mA transducer. Refer to Section 7.3, Analog Constant Pressure
Systems, for more information on operating the drive in this mode. Refer to Figure 17 for a diagram
illustrating connection of the transducer to control terminals. If a redundant analog transducer is used,
connect it to the I_2+ and I_2- terminals in likewise fashion. If the sensor on I_1 fails (current signal is
zero) the drive will look for a signal on I_2 to control pressure. If there is no signal on I_2 the drive will
stop and indicate SENSOR CONNECTION FAIL.
System Configuration = 2: Speed control with 0-5VDC analog signal. Use this setting for motor
speed control by a potentiometer connected to the 0-5 VDC control terminals. Refer to Figure 17 for a
diagram illustrating connection of the potentiometer to control terminals. The drive will ignore the
analog signal until it reaches a value proportional to the speed set by the parameter, MIN
FREQUENCY, which has a factory default setting of 30 Hz. For speed control across the full scale
range of the analog signal, set MIN FREQUENCY to the minimum value of 5 Hz. AUX1 and AUX2 must
be closed to run in this System Configuration. CAUTION: By default, AUX1 and AUX2 are
programmed to be always ON. See parameters AUX1 SELECT and AUX2 SELECT to change this
setting.
System Configuration = 3: Speed control with 4-20 mA analog signal. Use this setting for motor
speed control proportional to a 4-20 mA analog signal. The drive will ignore the analog signal until it
reaches a value proportional to the speed set by the parameter, MIN FREQUENCY, which has a factory
default setting of 30 Hz. For speed control across the full-scale range of the analog signal, set MIN
FREQUENCY to the minimum value of 5 Hz. Refer to Figure 18 for a diagram illustrating connection of
the transducer to Control Terminals. When using an active powered 4-20 mA source, connect the leads
to I_1in+ and COM. AUX1 and AUX2 must be closed to run in this System Configuration.
CAUTION: By default, AUX1 and AUX2 are programmed to be always in RUN mode. See
parameters AUX1 SELECT and AUX2 SELECT to change this setting.
CAUTION: This is not a CP control mode. Motor speed will be controlled in a linear fashion
proportional to the analog signal.
The SYSTEM CONFIG must be in any of the CP modes to enable Pre-Charge of the plumbing system
or Lead/Lag pump control. See Section 7.4, Pre-Charge and Section 7.5, Lead/Lag Pump Control for
more information.
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