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.
T
T
T
DIn
AIn
+10 V
1
2
3
DGND
DCOM
1…3 PTC sensors
1
Digital input and 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 AI/DI Voltage Divider tree
. Make sure that
the digital input is not configured to any other use by parameters.
2
10 V reference voltage
3
AI1 and AI2 as Pt100, Pt1000, Ni1000, KTY83 and KTY84 sensor inputs
WARNING!
IEC 60664 and IEC 61800-5-1 require double or reinforced insulation between
live parts and accessible parts when:
•
the accessible parts are not conductive, or
•
the accessible parts are conductive, but not connected to the protective earth.
Obey this requirement when you plan the connection of the motor temperature
sensor to the drive.
If the motor temperature sensor has a reinforced insulation vs. the motor windings, you
can connect it directly to the drive IO interface. This section shows the connection. If
the sensor has no reinforced insulation, you must use another type of connection to
fulfill the safety requirements. See
Implementing a motor temperature sensor
.
You can connect temperature measurement sensors (one, two or three Pt100 sensors;
one, two or three Pt1000 sensors; or one Ni1000, KTY83 or KTY84) between an analog
input and output as shown below. Leave the sensor end of the cable shield unconnected.
104 Electrical installation – North America
Summary of Contents for ACH480
Page 1: ... ABB DRIVES FOR HVAC ACH480 drives Hardware manual ...
Page 2: ......
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Page 14: ...14 ...
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Page 86: ...86 ...
Page 110: ...110 ...
Page 114: ...114 ...
Page 122: ...122 ...
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 ...