Revision 2016/03, 6ELE, V1.14
4-65
If temperature exceeds the setting level, motor will be coast to stop and
is displayed. When the
temperature decreases below the level of (Pr.07.15-Pr.07.16) and stops blinking, you can press
RESET key to clear the fault.
Pr.07.14 (overheat protection level) must exceed Pr.07.15 (overheat warning level).
The PTC uses the AVI-input and is connected via resistor-divider as shown below.
1. The voltage between +10V to ACM: lies within 10.4V~11.2V.
2. The impedance for AVI is around 47kΩ.
3. Recommended value for resistor-divider R1 is 1~10kΩ.
4. Please contact your motor dealer for the curve of temperature and resistance value for PTC.
PTC
Ω
resistor-divider
R1
Refer to following calculation for protection level and warning level.
1. Protection level
Pr.07.14= V
+10
* (R
PTC1
//47K) / [R1+( R
PTC1
//47K)]
2. Warning level
Pr.07.16= V
+10
* (R
PTC2
//47K) / [R1+( R
PTC2
//47K)]
3. Definition:
V+10: voltage between +10V-ACM, Range 10.4~11.2VDC
R
PTC1
: motor PTC overheat protection level. Corresponding voltage level set in Pr.07.14, R
PTC2
: motor PTC
overheat warning level. Corresponding voltage level set in Pr.07.15, 47kΩ: is AVI input impedance, R1:
resistor-divider (recommended value: 1~20kΩ)
Take the standard PTC thermistor as example: if protection level is 1330Ω, the voltage between +10V-ACM is
10.5V and resistor-divider R1 is 4.4kΩ. Refer to following calculation for Pr.07.14 setting.
1330//47000=(1330*47000)/(1330+47000)=1293.4
10.5*1293.4/(4400+1293.4)=2.38(V)
≒
2.4(V)
Therefore, Pr.07.14 should be set to 2.4.
550
1330
℃
Ω
Tr
Tr-5
℃
Tr+5
℃
07.15
Motor PTC Overheat Warning Level Unit: 0.1
Settings 0.1~10.0V Factory Setting: 1.2
07.16
Motor PTC Overheat Reset Delta Level Unit: 0.1
Settings 0.1~5.0V Factory Setting: 0.6
07.17
Treatment of the motor PTC Overheat
Factory Setting: 0
Settings 0 Warn and RAMP to stop
1 Warn and COAST to stop
2 Warn and keep running
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