Running Signal (Run) (C021); Frequency Arrival Signals (Fa1, Fa2, Fa3) (C021,C042,C043) - Hitachi NES1-004SB Quick Reference Manual

Chapter 7 Explanation of Functions
7.8.8 Running signal (RUN)
While the inverter is operating, it outputs the running (RUN) signal via an intelligent output terminal ([11]) or
the alarm relay terminal.
To use this signal function, assign function "00" (RUN) to one of the intelligent output terminals [11] (C021)
and the alarm relay terminal (C026).
The inverter outputs the RUN signal even while operating the DC brake. The following figure shows a
timing chart for the signal output:
Output frequency
FW
RUN
7.8.9 Frequency arrival signals (FA1, FA2, FA3)
The inverter outputs a frequency-arrival signal when the inverter output frequency reaches a set frequency.
Assign the following functions to three of the intelligent output terminals [11] (C021) and the alarm relay
terminal (C026):
"01" (FA1: constant-speed reached), "02" (FA2: set frequency overreached), "06" (FA3: set frequency
reached)
The hysteresis of each frequency-arrival signal is as follows:
When the signal is on: ("set frequency" - "1% of maximum frequency") (Hz)
When the signal is off: ("set frequency" - "2% of maximum frequency") (Hz)
The signal hysteresis at acceleration with function "06" (FA3) set is as follows:
When the signal is on: ("set frequency" - "1% of maximum frequency") (Hz)
When the signal is off: ("set frequency" + "2% of maximum frequency") (Hz)
The signal hysteresis at deceleration with function "06" (FA3) set is as follows:
When the signal is on: ("set frequency" + "1% of maximum frequency") (Hz)
When the signal is off: ("set frequency" - "2% of maximum frequency") (Hz)
Item
Frequency arrival setting for
accel.
Frequency arrival setting for
decel.
Function code Range of data
C042
0.01 to 400.0 (Hz)
C043
0.01 to 400.0 (Hz)
7 - 68
0.0 (Hz) Disabling the output of frequency
Enabling the output of frequency
0.0 (Hz) Disabling the output of frequency
Enabling the output of frequency
Description