32 | P a g e
6.5 System Configuration
Essential Series drives are capable of operating several types of systems, including
constant pressure water systems, with simple ON/OFF control from remote switches. The
correct system configuration must be selected for proper operation of different types
of control systems.
System configuration is set by navigating to the keypad Main Menu item CHANGE
PARAMETER VALUES > CHANGE INTERFACE PARAMETERS > SYSTEM CONFIG.
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 is programmed such that OPEN=STOP, CLOSED=RUN
and AUX2 is programmed such that OPEN=RUN, CLOSED=STOP. When SYSTEM
CONFIG = 2 (Analog CP), AUX1 and AUX2 are programmed such that OPEN=RUN,
CLOSED=STOP. See parameters AUX1 SELECT and AUX2 SELECT to change this
setting.
System Configuration = 1: Digital Constant Pressure. Use this setting to operate digital
constant pressure systems. Only use digital pressure switches purchased from or approved
by Phase Technologies. Refer to Section 7.3, Digital Constant Pressure Systems, for more
information on operating the drive in this mode.
System Configuration = 2: Analog Constant Pressure. Use this setting to operate
analog constant pressure systems with a 4-20 mA transducer. Refer to Section 7.5, Analog
Constant Pressure Systems, for more information on operating the drive in this mode.
Refer to
Figure 8 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 = 3: 0-5 VDC Speed Control. Use this setting to control speed
using a 0-5 VDC potentiometer. Speed is relative to scale of signal from 0 Hz to MAX
FREQUENCY. Refer to Figure 9 for a diagram illustration connection of potentiometer.
CAUTION: This is not a constant pressure control mode. Motor speed will be
controlled in a linear fashion proportional to the analog signal.
The System Configuration must be in any of the constant pressure modes to enable Pre-
Charge of the plumbing system. See Section 7.7, Pre-Charge for more information.
6.6 Start-Up and Shut-Down Ramp Times
Start-up and shut-down ramp times specify the time required to go from Minimum
Frequency to Maximum Frequency or vice versa. Ramp times and profiles are adjustable
by changing Operating Parameters through the keypad and text display. Factory settings
activate the COAST TO STOP parameter to reduce nuisance tripping from high inertia
loads. Coast to stop inactivates the SHUTDOWN RAMP parameter.
To help protect submersible pumps from damage at startup, the ramp time from 0-30Hz is
fixed at 1 sec.
To Next Page
Loading...