4-165
(5) The resistor (PTC) conform the British Standards Institution：
When Tr is 150 ℃in Class F and is 180℃ in Class H
Tr-5℃：R
T≦ 550Ω，put RT in formula (1), the V value by calculation is the value of 08-43.
Tr+5℃：R
T≧1330Ω，put RT in formula (1), the V value by calculation is the value of 08-44.
(6) It gets reference value by using formula (1) even in the different spec of resistor (PTC).
(7) Please follow the rule of PTC protection function setting, prevent the error occors.
PTC restart level(08-43) > PTC warning level(08-44) > PTCprotection level(08-42)
1330
550
Resistance (O)
Temperature
Class F
150蚓
Class H
180蚓
Tr'
Tr - 5
Tr
Tr + 5
Tr: Temperature threshold value
(a) PTC Thermistor Characteristics
(b) PTC Thernistor
connections
Divider Resistor(R)
(1~2K(O)
PTC Thermistor
+10V
AI 2
GND
Internal circuit
200KO
Figure 4.3.65 (a) PTC Thermistor Characteristics (b)PTC Thermistor Connections
Notes:
For PTC thermistor connections, JP3 switch needs to set V, 04-00 needs to ser 2 or 4.
08 - 48
Selection of Fire Mode
Range
【0】: Disable
【1】: Enable
When 08-48=0, Fire Mode is disabled.
When 08-48=1, Fire Mode is enabled.
When fire mode is enabled, S6 will be defined to digital input of fire mode (03-0X=47).
When fire mode is enabled, inverter will become to fire mode. No matter inverter is running or
stopping, run and frequency command source will be covered by the setting of fire mode, keypad
display will show “ FIRE ”, some of protect functions will be ignored, please refer the table 4.3.35,
inverter will not stop.
When fire mode (03-0X=47) and outour overload (03-0X=68) function is triggered, the other digital
inputs will be ignored, the parameters just can be read by communication or keypad display.
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