E6581611 
 
F-113 
6 
6.29.16  Motor PTC thermal protection 
 
 f147 : Logic input / PTC input selection (S3) 
 
 f645 : PTC thermal selection 
 
 f646 : Resistor value for PTC detection 
 
 
 Function  
 This function is used to protect motor from overheating using the signal of PTC built-in motor. 
  The trip display is “
e-32”. 
 
 
[Parameter setting] 
Title  Function  Adjustment range  Default setting 
f147
Logic input / PTC input selection (S3) 
0: Logic input 
1: PTC input 
0 
f645 
PTC thermal selection 
1: Tripping 
2: Alarm only 
1 
f646 
PTC detection resistor value 
100-9999 (Ω) 
3000 
Note : Protecting PTC thermal, set f147=1 (PTC input) and slide switch SW2 to PTC side. 
● Tripping level is defined by f646 setting. Alarm level is defined by 60% of f646 setting. 
● Connect the PTC between S3 and CC terminals.  
Detection temperature can be set by 
f646 setting. 
 
[Connection] 
 
 
 
 
 
 
 
 
 
 
● Output of PTC input alarm signal  
The PTC input alarm is assigned to the output terminal. 
Setup example) When the PTC input alarm is assigned to the OUT terminal 
Title Function Adjustment range  Setting 
f131
Output terminal selection 2A 
(OUT)  
0-255 
150: PTCA 
(PTC input alarm signal)  
Setting value 151 is reverse signal. 
 
 
 
S3
CC
PTC
 
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