Xylem IM244R04 SPD Plus Variable Speed Pump Control - Manual (Page 22)

22
WARNING
WARNING
SETTING PRESSURE SETPOINT
When in REM mode, set the desired pressure setpoint
by pressing the Up or Down arrow keys on keypad.
Push and hold the Up or Down arrow keys until the
desired pressure setting is obtained. The pressure
setpoint is displayed on the first row of the Main
Screen display with units of ‘PSI SP’. The actual
system pressure reported by the pressure transducer
is displayed on the second row of the Main Screen
display with units of ‘PSI AC’.
DRIVE STATUS LED
The status code indicator light or LED displays the
status of the controller. The status indicator is located
in the upper left hand corner of the display keypad.
A constant green status indicates that the pump is
in normal operation. A blinking green status code
indicates the unit has an alarm. A constant red status
code indicates the unit is faulted and will attempt
to automatically restart. A blinking red status code
indicates the unit is faulted and will not attempt to
restart. See Section 9 for Troubleshooting.
DANGER
The status code indicator light is not
a voltage indicator! Always turn off
disconnect switch and wait 5 minutes
before servicing.
MOTOR ROTATION DIRECTION
NOTE
Before increasing motor speed, check that the motor
is running in the desired direction.
If the pressure/flow seems low or the system is
indicating Motor Overload error check the motor
rotation direction. Turn the disconnect switch to
the off position and wait 5 minutes. Switch any two
output leads on the controller, U2, V2 or W2. Turn
the disconnect switch to the on position. Observe
pressure and flow. If the pressure or flow still seems
low check plumbing. For CentriPro Motors, connecting
U2 to Red, V2 to Black and W2 to Yellow will give the
correct rotation.
NOTE
It is possible for the pump to maintain constant
pressure with a low flow or a high suction head even
if the pump is rotating backwards. While the pump
is running use an amp probe on one of the output
power leads connected to the motor and compare
the current draw between the two rotation directions.
The lowest current reading typically indicates the
pump is running in the correct direction.
SECTION 9: TROUBLESHOOTING
DANGER
Disconnect power, lock-out all switch
disconnects then wait 5 minutes before
attempting to service the unit. Use
caution as there may still be hazardous voltage on
the input side of the switch disconnect powering
the unit.
Do not attempt any measurement, parts replacement
or other service procedure not described in this
manual. Such action will void the warranty, may
endanger correct operation and increase downtime
and expense.
All electrical installation and maintenance work
described in this chapter should only be undertaken
by qualified service personnel. The Safety instructions
on the first pages of this manual must be followed.
GENERAL
The SPD Plus is a self-diagnosing controller. If a prob-
lem occurs, observe the Fault or Alarm messages on
the control panel display as well as the Status LED on
the keypad.
STATUS INDICATOR
The Status Indicator is located in the upper left hand
corner of the keypad display. The chart below de-
scribes the possible states of the Status Indicator.
Drive State
LED Color Constant/
Flashing
Not Faulted/
Green Constant
No Alarm
Alarm Green Flashing
Faulted
Red Constant
(Auto-restart fault)
Faulted (Locked Out) Red Flashing
RED – FAULTS:
The drive signals that it has detected a severe error, or
fault, by:
• Enabling the red LED on the drive according to
the table above.
• Overriding the control panel display with the
display of a fault code.
• Stopping the motor (if it was on).
Hazardous
voltage
DANGER
Hazardous
voltage
DANGER