Hanbell RC2-AVI Series, Manual

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Notes:
1. VMAX / FMAX = Motor rated Voltage / Frequency.
2. FMIN or FB could be random. Make sure that VMIN / FMIN = VC / FB = VMAX / FMAX;
FMAX > FB > FMIN; VMAX > VC > VMIN.
For 400V, 80Hz Motor,
VMAX is 400(V), and FMAX is 80(Hz)
If FMIN is 20Hz, VMIN would be 400
÷
80
×
20 = 100 (V);
If FB is 30Hz, VC would be 400
÷
80
×
30 = 150 (V)
3. For safety reason, the recommended way of checking V/F setting is to operate VFD without connecting motor. If
the ratio of output voltage and frequency is always equal to VMAX / FMAX, V/F setting is finished.
4. Once VFD starts to drive motor, please check the output current is normal or not in the beginning. Incorrect V/F
setting would result in an excessive current. If so, must shutdown VFD immediately, and recheck all the settings.
5.4 Protection devices
The table below shows the list of protection devices which are essential to protect the compressor and operate safely.
Follow the protection devices listed in the table below to ensure the compressor’s running under normal condition.
Protection device Set point Remark
Motor wiring temperature protector (PTC sensor) Trip at 110
℃
Standard
Discharge temperature protector (PTC sensor ) Trip at 110
℃
Standard
Oil level switch Optional
Oil filter pressure differential switch Cutout 1.5kg/cm
2
g Optional
Oil flow switch Optional
Pt100 or Pt1000 for liquid injection to motor
chamber.
Depends on customer’s application. Normally, Cut in 60
℃
, cut out 50
℃
Optional
Motor thermistors and discharge thermistors are temperature sensors with quick response while the temperature
approach to their set point; thermistors must be connected in series to a controller (INT69HBY) in cable box as a
guardian to protect compressor. Alarm lamp for this protector is required to be embedded on control panel as indicator.
Any intention to short controllers for starting of compressors is prohibited. It is beyond Hanbell’s warranty of
compressors if there is any action above mentioned found.
Note: when any protection device trips, please do troubleshooting and reset manually. Do not let the compressor reset
automatically after abnormal trip.
5.5 Grounding
There’s a grounding terminal inside cable box. Please accurately connect it to
grounding of control panel for the system.
Suggestion:
a. The regular setting of electric leak protection should be greater than 50mA; for a
humid location, 25mA is better.
b. Grounding voltage of casing should be no greater than 50V; for a humid location,
the limit is 25V.
c. Grounding resistance should be no greater than 500 Ohm.
d. Air cut board (ACB) is regularly equipped with electric leak protection. Please refer
to related settings for its normal action.
e. If electric leak protection is active, please check if insulation of equipments is
normal and if its wiring and setting are correct.
Please make sure nothing is wrong before turning on the power. If there are any questions, please contact the supplier
of equipments.
Grounding
B:Pt100 Ω / Pt1000 Ω
(Optional)
A:PTC
terminal
Earth Bolt
A B
U
V
W
Figure 5.3: Grounding Terminal