DOCUMENT
NO.
REV.NO
PAGE
STANDARD
NAME
00
6
Operation Recommendations
6.1 Avoid applying excessive shock or vibration beyond the specification for
the VFD module.
6.2 Since VFDs are made of glass material, careful handing
is required,i.e.
Direct impact with hard material to the glass surface (especially exhaust
tip) may crack the glass.
6.3 When mounting the VFD module to you system,leave a slight gap between the
VFD glass and your front panel. The module shoud be mounted without stress
to avoid flexing of the PCB.
6.4 Avoid plugging or unplugging the interface connection with the power
on ,otherwise it may cause the severe damage to input circuitry.
6.5 Slow starting power supply may cause non-operation beca
use the chip mcu
won
t be reset.
6.6 Exceeding any of maximum ratings may cause the permanen
t damage.
6.7 Since the VFD modules contain high voltage source,careful handing is
required while power is on
6.8 When the power is turned off,the capacitor does not dis
charge immediately.
So the high voltage applied to VFD must not get in contact with
ICs. In
other words, short-circuit of mounted component on PCB within 30 seconds
after power-off may cause damage the module.
6.9 The power supply must be capable of providing at least
3 times the rated
current,because the surge current may be 3 times the specified current
consumption when the power is turned on.
6.10 Avoid using the module where excessive noise interferen
ce is
expected.Noise may affects the interface signal and causes improper
operation. And it is important to keep the length of the interface cable
less than 50cm.
6.11 Since all VFD modules contain C-MOS ICs,anti_static han
dling procedures
are always required.
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