Specifications

Chapter 6: Programming Features
Firmware – S2011 and S3012
Revision: 1 (9/98) 45 © Saftronics, Inc.
6.3.12 Continuing Operation by Automatic Fault Reset (n056)
Sets the Inverter to restart and reset fault detection after a fault occurs. The number of self-diagnosis and retry attempts
can be set in n056 up to 10. The Inverter will automatically restart after the following faults occur:
• OC (overcurrent)
• OV (overvoltage)
• UV1 (undervoltage PUV) (when n051 = 1 is selected)
• GF (ground fault)
• rr (regenerative transistor fault)
The number of retry attempts are cleared to 0 in the following cases:
• If no other fault occurs within 10 minutes after retry.
• When the fault reset signal is ON after the fault is detected.
• Power supply is turned OFF.
6.3.13 Operating Coasting Motor without Trip
To operate coasting motor without trip, use the Speed Search command or DC Injection Braking at start.
§ Speed Search Command
Restarts a coasting motor without stopping it. This function enables smooth switching between motor commercial
power supply operation and Inverter operation.
Set multi-function contact input selection (constants n035 to n039) to 15 (Search command from maximum output
frequency) or 16 (Search command from set frequency).
Build a sequence so that FWD or REV RUN command is input at the same time or after the Search command. If the
RUN command is input before the Search command, the Search command becomes disabled.
Following is a time chart at Search command input.
Figure 32 Search Command Input Timing Diagram
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