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33
MANUAL RESET — If the fault condition has been re-
moved, cycle power to the Motormaster to reset the drive.
TROUBLESHOOTING — Troubleshooting the Motormaster
V control requires a combination of observing system opera-
tion and VFD (variable frequency drive) information. Refer to
Fig. 29 for the low ambient wiring diagram. The drive provides
2 kinds of troubleshooting modes: a status matrix using the 3-
digit display (P57, P58) and real time monitoring of key inputs
and outputs. The collective group is displayed through parame-
ters 50 to 71 and all values are read-only. The key read-only
outputs are:
•
P50: FAULT HISTORY - This displays the last 8 faults.
•
P51 : SOFTWARE VERSION - This displays the Soft-
ware version number.
•
P52: DC BUS VOLTAGE - This displays the DC bus
voltage in percent of nominal. It is usually rated input
voltage x 1.4.
•
P53: MOTOR VOLTAGE - This displays the motor
voltage in percent of rated output voltage.
•
P54: LOAD - This displays the motor load in percent of
the drive's rated output current rating.
•
P55: VDC INPUT - This displays the VDC input in per-
cent of maximum input. A display of 100 will indicate
full scale, which is 5 v.
•
P56: 4-20 mA INPUT - This displays the 4 to 20 mA
input in percent of maximum input. A value of 20% = 4
mA and a value of 100% = 20 mA.
Refer to Tables 12 and 13 for more troubleshooting
information.
L1
L2
L3
Mode
DANGER
T1
T2
T3
B+
B-
DISPLAY
BUTTONS
Mode
MMV
TERMINAL
BLOCK
Fig. 30 — Motormaster
®
V Mode Buttons and Mode Display
LEGEND
MMV
—
Motormaster V Control
a09-605