SJE-Rhombus VFDC-4100 Controller User Manual
11
3.2.3 Pressure Setup
Menus
Setup Menu
Contents
Input Range
SET PRESSURE
Target pressure for the pump system discharge
2 PSI ~ 650 PSI
SET PRESSURE 2
To change the set pressure to this alternate
2 PSI ~ 650 PSI
value, a dry contact must close between G-COM
and 018 on the CN8 terminals.
HIGH LIMIT ALARM
If the discharge pressure exceeds this value, the
3 PSI ~ 719 PSI
controller will shutdown the pumps after a delay.
LOW LIMIT ALARM
If the discharge pressure drops below this value,
1 PSI ~ 649 PSI
PRESSURE
the contoller will shutdown the pumps after a
delay.
SETUP
START LEAD PRESSURE
If the set pressure is 60 PSI and start lead
-65 PSI ~ 65 PSI
pressure at -3 PSI, the lead pump will start
when the operating pressure drops below 57 PSI.
START LAG PRESSURE
If the set pressure is 60 PSI and start lag
-65 PSI ~ 65 PSI
pressure is -7 PSI the lag pump(s) will start when
if lead pump is operating full speed (100% and
the system pressure drops below 53 PSI.
STOP LAG PRESSURE
If the set pressure is 60 PSI and the stop lag
0 PSI ~ 65 PSI
pressure is 3 PSI the lag pump will stop if it is
operating at minimum speed (example 50%)
and the current pressure is over 63 PSI.
3.2.4 Control Setup
Menus
Setup Menu
Contents
Input Range
P
P Value Setup of PID (Proportional)
0 ~ 200
I
I Value Setup of PID (Integral)
0 ~ 200
D
D Value Setup of PID (Derivative)
0 ~ 200
CYCLE TIME
Sampling time of PID Control
0 ~ 999 m.sec
ALTERNATION
Shifts the lead to the next available pump in the
0 ~ 999 HOURS (set to 0 for
sequence.
lead. Change every cycle, set
to 999 for no alternation)
FRICTION
PSI offset allowance for friction loss
0 PSI ~ 900 PSI
RUN DELAY
Delay time for pumping output to start
0 ~ 999 SECONDS
STOP DELAY
Delay time for pumping output to stop
0 ~ 999 SECONDS
CONTROL
JOCKEY STOP DELAY TIME
Delay time after the main pump starts
0 ~ 999 SECONDS
SET UP
OPERATION TYPE
Sets the operation type. VFD = multiple VFD
VFD, 1VFD+ATL
control system (1 VFD for each pump.)
1VFD+ATL = Single VFD control system
(combination of 1 VFD and starters)
LOW SUCTION TMR
Delay time before stipping the pump due to low
10 ~ 999 SECONDS
suction
pressure
LOW SUCTION RST
Method used to reset the low suction shut
AUTO, MANUAL
down
valve
LOW SUCT RST TMR
When low scution rest is set to auto, this is the
10 ~ 999 SECS (2.78 hrs)
time the controller will wait before attempting
to
reset.
LOW PRESS STOP TIME
Delay time before stopping the pump due to low
10 ~ 999 SECONDS
pressure
fault.
INITIALIZE
All parameters are set to factory defaults
YES, NO
(except data setup)
