Smart Power Systems HR-110 - Manual (Page 45)

Smart Power
®
Systems
A. C. MODULAR GENERATOR SYSTEM
Page 44 of 53
Electrical Problems
1.
No Output Voltage:
a. No output voltage may be caused by excessive current draw opening the circuit
breakers. (The circuit breakers can be found mounted on the generator wiring
enclosure.) Remove all electrical loads from the generator and reset breaker(s).
Re-engage electrical load in increments. If possible, monitor current draw with
the Command & Control Center to determine which portion of the load is
causing the breaker to open.
b. The PTO is faulty. Verify that the drive shaft that links the pump to the hydraulic
pump is spinning when the PTO is engaged. If the shaft is not turning, the
probable cause of the failure is a non-functional PTO. Contact the PTO
manufacture or qualified representative for further information.
c. The generator’s system controller has lost power (reference Figure 2). The
Command & Control Center would stay dark even after the mode and/or on/off
switch is pressed. Verify that the vehicle +12V supply has both +12 volts and
ground. If 12 volts is not available check the vehicle for a blown fuse or a
loose/open electrical connection.
d. The stator field may be shorted or open. With a flashlight, check the generator
windings visible through the ventilation slots. If the windings appear burnt in any
area, the generator must be replaced. If the windings are not burnt, disconnect
wires 1, 2, 3, and 4 from the terminal strip located in the generator wiring
enclosure and make resistance measurement. The resistance between wires 1
and 2, and wires 3 and 4 should be between essentially 0 ohms. Contact Smart
Power
®
Systems at (231) 832-5525 if any problems are found.
WARNING:
Do not attempt to measure stator field resistance while the system is operating.
Electrical shock may occur.
e. The exciter field may be shorted or open. With a flashlight, check the generator
windings visible through the ventilation slots. If the windings appear burnt in any
area, the generator must be replaced. If the windings are not burnt, disconnect
the exciter field from the field capacitor. Measure the resistance of the exciter
field using an ohmmeter. The resistance of the exciter field should be between
.27 and .29 ohms. Contact Smart Power
®
Systems at (231) 832-5525 if the
resistance is outside this range.