Smartrise DSD412, Startup Manual

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Drive Startup Manual DSD412
Page 8 © 2020 Smartrise Engineering, Inc. All Rights Reserved March 5, 2020
If the drive passes the self-test, then the SCDU displays P-UP.
The READY LED comes on.
Abnormal Display Conditions
If an error or fault has occurred, the display shows an abnormal condition.
The following is a list of Abnormal Display Conditions and Solutions.
Table 2: Abnormal Display Conditions and Solutions
Condition Solution
No digits or LEDs come on Check for proper voltage between the 115 VAC control
power lines.
Check for blown 115 VAC control power fuses.
Check for a defective Control Voltage Power Supply in
the power cube.
Horizontal segment(s) of the SCDU
display are lit
One or more phases of the three-phase power is
missing.
Measure and verify three-phase power input at the
drive terminals.
Check the three-phase power fuses.
FAULT LED lights and a fault code
appears on the SCDU
Refer to the Fault / Error Codes List to see what caused
the fault and to find the correct solution. See C4 Faults
and Alarms .
A fault code is displayed as the letter 'F' followed by a
number representing the fault.
SCDU displays Prot The initial checks found that the protected non-volatile
RAM (NVRAM) has not been initialized.
Move the NVRAM PROTECTION switch to OFF in order
to allow the microprocessor to initialize the NVRAM
with preprogrammed default values.
Notice that the NV RAM UNPROTECTED LED is now lit
to indicate the NV RAM PROTECTION switch position.
Press the RESET push button. The drive goes through its
power-up sequence again; however, this time it will
initialize the unprotected NVRAM and load in factory
supplied default parameter values.