Setting parameters
10/05 AWB8230-1541GB
116
Thermistor (PTC)
You can configure digital input 5 as PTC thermistor input. The PTC
thermistor connected to terminal 5 and L monitors the motor’s
temperature. If the resistance of the thermistor rises above
3000 O (g10 %), the motor is stopped and fault signal E35 is
issued.
X Configure digital input 5 as PTC by setting PNU C005 to 19.
If the DF51 has issued fault signal E 35 and you want to
reconfigure digital input 5, which is configured as PTC, do the
following:
X Connect a link between digital input 5 and terminal L.
X Press the Stop key to acknowledge the fault message.
X You can now assign a new function to digital input 5 under
PNU C005.
Figure 120:Digital input 5 configured as PTC (thermistor input)
PTC
5L
i
Figure 121:Characteristic of a PTC thermistor
h
The PTC thermistor can be connected only to digital input
5; digital inputs 1 to 4 and can not be used.
h
If digital input 5 is configured as PTC, but no thermistor is
connected, fault message E 35 is displayed.
60
750
1650
4000
12000
–20° –5° +5° +15°
3600 Tripping
1600 Reset
Tolerance limits
Temperature
NAT
NAT
NAT NAT NAT
Resistance [ ]
Resetting
range
IEC-
Tripping range
[°C]
PNU Name RUN b031
= 10
Value Function DS
C085 Thermistor
compensation
(digital input 5)
j j 0 – 200 % Compensation for thermistor connection. 100
To Next Page
Loading...
