Hitachi NES1-002LB, Quick Reference Manual

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Chapter 7 Explanation of Functions
7 - 68
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:
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 Function code Range of data Description
Frequency arrival setting for
accel. C042
0.0 (Hz) Disabling the output of frequency
0.01 to 400.0 (Hz) Enabling the output of frequency
Frequency arrival setting for
decel. C043
0.0 (Hz) Disabling the output of frequency
0.01 to 400.0 (Hz) Enabling the output of frequency
Output frequency
RUN
FW