IMPULSE
®
•G+ & VG+ Series 4 Technical Manual
November 2020
Page 175
5.7.7 Hardware Protection
The IMPULSE
®
•G+ and VG+ Series 4 comes equipped with a number of built-in functions designed to protect the
VFD and its components from damage.
Table 5-99: Hardware Protection Parameter Settings
Parameter Display Function Range Default
L08-02 OH Pre-Alarm Lvl Sets the heatsink temperature level for protection
against overheat (OH).
NOTE: The VFD measures heatsink temperature
by a negative temperature coefficient
thermistor.
50–150°C *
L08-03 OH Pre-Alarm Sel Selects the stopping method when heatsink
overheat is detected.
0–5 3
0 Decel to Stop Decel to stop using B05-02
1 Coast to Stop Immediate stop
2 Fast Stop Decel to stop using B05-08
3 Use B3-03 Method Uses programmed B03-03 Method
4 Alarm Only Operation continues and “OH Heatsink Overtemp”
is displayed on keypad
5 Run@L8-19 Rate Continue operation at reduced speed L08-19.
L08-05 Ph Loss In Sel Input phase loss detection 0, 1 1
0 Disabled
1 Enabled
L08-07 Ph Loss Out Sel Output phase loss detection 0–2 1
0 Disabled
1 1PH Loss Det
2 2/3PH Loss Det
L08-09 Ground Fault Sel Ground fault detection 0, 1 1
0 Disabled
1 Enabled
L08-10 Fan On/Off Sel Cooling fan operation select 0, 1 0
0 Dur Run (OffDly)
1 Always On
L08-11 Fan Delay Time When L08-10 = 0, fan will operate L08-11 seconds
after Run Command is removed
0–300 sec 60
L08-12 Ambient Temp Adjusts Overload (OL2) Protection for high
ambients
-10–50°C 40
L08-13 UV3 Detect Enabled Soft Charge Bypass Circuit Fault 0, 1 1
0 Disabled
1 Enabled
L08-15 OL2 Sel @ L-Spd OL2 detection when output frequency ≤ 6 Hz 0, 1 0**
0 Disabled
1 Enabled
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