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Simplified main circuit diagram
R-
L1
L2
L3
T1/U
T2/V
T3/W
R+
1
2
3
4
Rectifier. Converts alternating current and voltage to direct current and voltage.
1
DC link. DC circuit between rectifier and inverter.
2
Inverter. Converts direct current and voltage to alternating current and voltage.
3
Brake chopper. Conducts the surplus energy from the intermediate DC circuit of the drive
to the brake resistor when it is necessary and if an external brake resistor is connected to
the drive. The chopper operates when the DC link voltage exceeds a certain maximum limit.
The voltage rise is typically caused by deceleration (braking) of a motor. The user obtains
and installs the brake resistor when necessary.
4
Product variants
The drive has two product variants:
•
Standard unit: drive (for example, ACH480-04-02A7-4) with ACH-AP-H assistant
control panel and I/O & EIA-485 module (RIIO-01).
•
Base unit: drive (for example, ACH480-04-02A7-4+0J400+0L540) without control
panel and without I/O & EIA-485 module (RIIO-01).
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IEC and UL (NEC) product types
The ACH480 series consists of IEC product types and UL (NEC) product types. The
IEC types are designed for global use. The UL (NEC) types are specifically designed
for use in North America.
30 Operation principle and hardware description
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 ...