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AI and AO (or AI, DI and +10 V) as PTC motor temperature sensor interface
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 two connection
alternatives for the direct I/O connection. If the sensor does not have reinforced insulation,
you must use another type of connection to fulfill the safety requirements. See
Implementing a motor temperature sensor connection (page 56)
.
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
Electrical installation – North America 103
Содержание ACH480
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Страница 156: ...Frame R1 Frame R1 front side IP20 UL open type 156 Dimension drawings ...
Страница 157: ... Frame R1 bottom rear IP20 UL open type Dimension drawings 157 ...
Страница 158: ... Frame R1 front side UL Type 1 kit installed 158 Dimension drawings ...
Страница 159: ... Frame R1 bottom rear UL Type 1 kit installed Dimension drawings 159 ...
Страница 160: ...Frame R2 Frame R2 front side IP20 UL open type 160 Dimension drawings ...
Страница 161: ... Frame R2 bottom rear IP20 UL open type Dimension drawings 161 ...
Страница 162: ... Frame R2 front side UL Type 1 kit installed 162 Dimension drawings ...
Страница 163: ... Frame R2 bottom rear UL Type 1 kit installed Dimension drawings 163 ...
Страница 164: ...Frame R3 Frame R3 front side IP20 UL open type 164 Dimension drawings ...
Страница 165: ... Frame R3 bottom rear IP20 UL open type Dimension drawings 165 ...
Страница 166: ... Frame R3 front side UL Type 1 kit installed 166 Dimension drawings ...
Страница 167: ... Frame R3 bottom rear UL Type 1 kit installed Dimension drawings 167 ...
Страница 168: ...Frame R4 Frame R4 front side IP20 UL open type 168 Dimension drawings ...
Страница 169: ... Frame R4 bottom rear IP20 UL open type Dimension drawings 169 ...
Страница 170: ... Frame R4 front side UL Type 1 kit installed 170 Dimension drawings ...
Страница 171: ... Frame R4 bottom rear UL Type 1 kit installed Dimension drawings 171 ...
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Страница 198: ... Declaration of conformity 198 The Safe torque off function ...
Страница 206: ...Dimensions 206 BIO 01 I O extension module ...
Страница 212: ...Dimensions 3AXD50000031148 rev A 212 BREL 01 relay output extension module ...