Xylem IM244R04 SPD Plus Variable Speed Pump Control - Manual (Page 27)

27
WARNING
SECTION 9: TROUBLESHOOTING
(CONTINUED)
TROUBLESHOOTING FAULTS, ALARMS AND
PERFORMANCE PROBLEMS
In Troubleshooting, always consider the following
possibilities:
• Faults — Press Reset key first, enter Start Up
Assistant and verify the settings are appropriate.
• Electrical supply/ motor/ wiring/grounding
— check your supply voltage, motor wiring,
transducer wiring, and grounding.
• Mechanical/Pump/ Rotation — check pump
rotation, rubbing or other mechanical problems;
pump “run out”.
APPENDIX A: INPUT POWER SPECIFICATIONS
Do not operate the drive outside the nominal
input line voltage range. Over-voltage can result in
permanent damage to the drive.
SOMETIMES DRIVE INPUT ISOLATION
TRANSFORMERS ARE SPECIFIED TO DEAL WITH
ONE OR MORE OF THE FOLLOWING ISSUES:
1) Short Circuit Protection: Input transformers are
sometimes used to provide impedance to reduce
the available short circuit current to levels that the
input clearing devices, such as fuses or circuit
breakers, are rated to handle. Line reactors can
perform this impedance function much more cost
effectively.
2) Transient Protection: Input transformers are
sometimes used to provide transient surge
impedance. All the SPD Plus drives have
capacitors and MOV's (Metal Oxide Varistor transient
protectors) providing 120 to 360 joules, line to line
INPUT POWER SPECIFICATIONS
Input Power (mains) Connection Specifications
208/220/230/240 VAC 3-phase or 1-phase – 15% …+10% for SPD2XXXX
Voltage (U
1
) 380/400/415/440/460/480 VAC 3-phase -15%...+10% for SPD4XXXX
500/525/575/600 VAC 3-phase -15%....+10% for SPD5XXXX
Prospective Short- Maximum allowed prospective short-circuit current in the supply is 100 kA
Circuit Current providing that the input power cable of the drive is protected with
(IEC 629) appropriate fuses. US: 100 000 AIC.
Frequency 48…63 Hz
Imbalance Maximum ±3% of nominal phase to phase input voltage
Fundamental Power 0.98 (at nominal load)
Factor (cos phi
1
)
• Hydraulic System/ Piping — check to ensure
proper suction and discharge piping layout,
proper NPSHa, air entrainment, vortex, friction
loss, system curve compensation etc.
• Environment — protect from high temperatures,
direct sun, freezing temperatures, high altitude,
dust, vibration, lack of air flow.
to ground transient protection. Isolation
transformers are not required for this protection
within those energy levels. Additional distribution
transformer primary transient surge arrestors
may be required if the potential transient energy
reflected to the drive exceed those levels. MOV's
are rated to handle high levels of one shot
transient energy. MOV's are not meant to handle
continuously recurring transients. A problem
of continuously recurring transients should be
corrected before connecting a drive.
3) Harmonic Mitigation: Input transformers are
sometimes used to provide impedance to reduce
the harmonic currents generated in the drive. Line
reactors can perform this function much more
cost effectively.