Connecting A Frequency Meter [F N ] - Toshiba TOSVERT VF-A3 Instruction Manual

4.3 Meter Connection
You can connect a frequency meter and an ammeter.
'I
Use either an ammeter rated at 1 mAdc (full scale), or a DC voltmeter rated at 7.5 Vdc-1 rnA
(fu~1
!
scale), or a rectifying AC voltmeter. For wiring connection see section 8.3 page 117 ).
Zero-adjust the frequency meter by turning its adjustment screw. Calibrate its scale with the FM :
control provided in the control area (see Fig. 3.7, 3.8).
• The FM terminal outputs PWM waveforms. When your system requires an analog output, please
contact your Toshiba representative.
.. 4.3.1 Connecting a frequency meter [ Ffl ]
You can connect a frequency meter across the inverter's FM-CC terminals (see
Figure 3.8 for the locations of these terminals).
Calibrate the frequency meter's scale by using the following procedure:
[Operating procedure]
Example
Action
operation
1)
-
Adjustments should be made during a run.
When a calibration is conducted with a power supply of 60Hz, the inverter
!
12), 2ND
I
3)
!
MON
I
I
4)
i
RUN
I
i 5)
!
[;:,.
I
or
i
v I
!
(6)i
WRT
!
should be run with 60Hz rating.
I
I rn n
Ow.w
,
!
:Fn
I
I
I
I
Monitor display indicates the output frequency.:
50.0
Adust the frequency by pushing either the
~
or
@J
key so that the
frequency mater indicates 60Hz.
The output frequency indication on the monitor display remains unchanged.
i
I
Returns to original frequency.
I
: 50.0 ..... : Fn
5 "
n
w.w
• You can interrupt your adjustment operation at any time by pushing the STOP key.
- 8 4 -