Phase LHX Series - Page 55

48 | P a g e
DISPLAY MESSAGE
DESCRIPTION
DEFAULT [UNITS]
(MIN - MAX)
1.4.19 Analog Config
$
Press ENTER to see the following parameters related to Analog Configurations.
1.4.19.1 Max Analog
Sensor Range
This value should be set to the maximum value of the 4-20 mA
transducer being used for analog control i.e. if the transducer
has a range of 0-150, this parameter should be set to 150. This
parameter is critical for accurate control.
150 psi (50-500)
400 GPM
(0.1-3,200)
10 ft (0.01-100)
1.4.19.2 Analog Measure
Offset
Used to calibrate the reading the VFD registers from a 4-20
mA transducer if a manual measurement is not equal to VFD
reading. For example, if VFD reads 40 psi, but manual
measurement shows 50 psi, this should be set to +10.
0 psi (-50 – 50)
0 GPM
(-1,000-1000)
0 ft (-50-50)
1.4.19.3 Analog Setpoint
Offset
Used to calibrate the reading that the VFD registers from a 4-
20 mA transducer when ANALOG SELECT I1/I2 is set to
Setpoint Control. For example, if the intended setpoint is 50
psi, but the VFD reads the setpoint is 40 psi, 1.4.38.7 PSI
SETPOINT OFFSET should be set to +10.
0 psi (-50 – 50)
0 GPM
(-1,000-1,000)
0 ft (-50-50)
1.4.19.4 Frequency
Setpoint Offset
Used to calibrate the Frequency Setpoint if the drive reading
differs from the intended value. For example, if the intended
Frequency setpoint is 55 Hz but the drive runs at 52 Hz, this
parameter should be set to +3.
0 Hz (-30 – 30)
1.4.19.5 GPM Multiplier
Moves the decimal to change the scale of the sensor and
setpoint being used.
0.1 (0.01-1)
1.4.19.6 FT Multiplier
0.01 (0.01-1)
1.4.20 Suction Pressure
Time
The time at which the pressure must remain below 1.4.21
LOW PRESSURE FAULT LEVEL before triggering a fault.
0 sec (0-1800)
1.4.21 Low Pressure Fault
Level
Used only for transducers wired to I_2. The pressure setting
where any lower value will trigger a fault.
15 psi (0-200)
1.4.22 T OFF
@
Used to prevent short cycling in CP systems. If the motor was
off during the last cycle for a period greater than 1.4.22 TOFF,
the minimum on time of the motor is 1.4.23 T1 ON. If the motor
was off for a period less than 1.4.22 TOFF, the minimum on
time of the motor is 1.4.24 T2 ON. Default values give a
minimum cycle time of about 1 minute.
30 sec (0-9999)
1.4.23 T1 ON
@
See 1.4.22 TOFF above. Must be set less than 1.4.24 T2 ON.
15 sec (0-1000)
1.4.24 T2 ON
@
See 1.4.22 TOFF above. Must be greater than 1.4.25 T1 ON.
60 sec (0-1000)
1.4.25 Auto Sleep
Bandwidth
@
As a percentage of setpoint. This determines when Auto Sleep
can activate. If this is set to 10% and the setpoint is 50 psi,
Auto Sleep can activate within 45 – 55 psi.
3 % (0-100)
1.4.26 Auto Sleep
Detection Time
@
The length of time the analog measurement is within 1.4.25
AUTO SLEEP BANDWIDTH before Auto Sleep activates.
3 sec (1-300)
1.4.27 Auto Sleep Curve
@
Sets how quickly frequency decreases during Auto Sleep.
18 (1-999)
$ - Parameters are only visible when 1.3.2 MENU COMPLEXITY is set to STANDARD.
@ - Parameters are only visible when 1.3.2 MENU COMPLEXITY is set to ADVANCED.