Hitachi NES1-002LB, Quick Reference Manual

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Chapter 7 Explanation of Functions
7 - 70
7.8.10 Running time over and power-on time over signals (RNT and ONT
) [b034]
The inverter outputs the operation time over (RNT) signal or the plug-in time over (ONT) signal when the
time specified as the run/power-on warning time (b034) is exceeded.
Item Function code Range of data Description
Run/power-on warning time b034
0. Disabling the signal output
1. to 9999.
Setting in units of 10 hours
(range: 10 to 99,990 hours)
1000 to 6553
Setting in units of 100 hours
(range: 100,000 to 655,300 hours)
(1) Operation time over (RNT) signal
To use this signal function, assign function "11" (RNT) to one of the intelligent output terminals [11] (C021)
and the alarm relay terminal (C026).
Specify the run/power-on warning time (b034).
(2) Plug-in time over (ONT) signal
To use this signal function, assign function "12" (ONT) to one of the intelligent output terminals [11] (C021)
and the alarm relay terminal (C026).
Specify the run/power-on warning time (b034).
7.8.11 0Hz speed detection signal (ZS)
The inverter outputs the 0 Hz speed detection signal when the inverter output frequency falls below the
threshold frequency specified as the zero speed detection level (C063).
To use this signal function, assign function "21" (ZS) to one of the intelligent output terminals [11] (C021)
and the alarm relay terminal (C026).
Item Function code Data or range of data Description
Zero speed detection level C063 0.00 to 100.0 (Hz)
Setting of the frequency to be
determined as 0 Hz
C063
ZS output
Output frequency
FW
ON ON
ON