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See the firmware manual for information on the related Motor thermal protection function,
and the required parameter settings.
PTC connection 1
1…3 PTC sensors can be connected in series to an analog input and an analog output.
The analog output feeds a constant excitation current of 1.6 mA through the sensor.
The sensor resistance increases as the motor temperature rises, as does the voltage
over the sensor. The temperature measurement function calculates the resistance of
the sensor and generates an indication if overtemperature is detected. Leave the sensor
end of the cable shield unconnected.
T
T
T
AIn
AGND
AOn
1
2
3
AGND
1…3 PTC sensors
1
Analog input. Set the analog input type to V (volt) in parameter group
12 Standard AI
. Define
the temperature sensor type, signal source, etc. with parameters
35.11…35.24
. For the
sensor type, select:
PTC analog I/O
.
2
Analog output. Select the
Excitation mode
for the analog output in parameter group
13 Standard AO
.
3
PTC connection 2
If no analog output is available for the PTC connection, it is possible to use a voltage
divider connection. 1…3 PTC sensors are connected in series with 10 V reference and
digital and analog inputs. The voltage over the digital input internal resistance varies
depending on the PTC resistance. The temperature measurement function reads the
digital input voltage through the analog input and calculates the PTC resistance.
Electrical installation – IEC 79
Summary of Contents for ACH480
Page 1: ... ABB DRIVES FOR HVAC ACH480 drives Hardware manual ...
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Page 156: ...Frame R1 Frame R1 front side IP20 UL open type 156 Dimension drawings ...
Page 157: ... Frame R1 bottom rear IP20 UL open type Dimension drawings 157 ...
Page 158: ... Frame R1 front side UL Type 1 kit installed 158 Dimension drawings ...
Page 159: ... Frame R1 bottom rear UL Type 1 kit installed Dimension drawings 159 ...
Page 160: ...Frame R2 Frame R2 front side IP20 UL open type 160 Dimension drawings ...
Page 161: ... Frame R2 bottom rear IP20 UL open type Dimension drawings 161 ...
Page 162: ... Frame R2 front side UL Type 1 kit installed 162 Dimension drawings ...
Page 163: ... Frame R2 bottom rear UL Type 1 kit installed Dimension drawings 163 ...
Page 164: ...Frame R3 Frame R3 front side IP20 UL open type 164 Dimension drawings ...
Page 165: ... Frame R3 bottom rear IP20 UL open type Dimension drawings 165 ...
Page 166: ... Frame R3 front side UL Type 1 kit installed 166 Dimension drawings ...
Page 167: ... Frame R3 bottom rear UL Type 1 kit installed Dimension drawings 167 ...
Page 168: ...Frame R4 Frame R4 front side IP20 UL open type 168 Dimension drawings ...
Page 169: ... Frame R4 bottom rear IP20 UL open type Dimension drawings 169 ...
Page 170: ... Frame R4 front side UL Type 1 kit installed 170 Dimension drawings ...
Page 171: ... Frame R4 bottom rear UL Type 1 kit installed Dimension drawings 171 ...
Page 172: ...172 ...
Page 180: ...180 ...
Page 198: ... Declaration of conformity 198 The Safe torque off function ...
Page 206: ...Dimensions 206 BIO 01 I O extension module ...
Page 212: ...Dimensions 3AXD50000031148 rev A 212 BREL 01 relay output extension module ...