Safety instructions
WARNING!
Obey these instructions. If you ignore them, injury or death,
or damage to the equipment can occur. If you are not a qualified
electrical professional, do not do electrical installation or maintenance
work.
•
Do not do work on the drive, motor cable, motor, or control cables when the
drive is connected to the input power. Before you start the work, isolate the
drive from all dangerous voltage sources and make sure that it is safe to
start the work. Always wait for 5 minutes after disconnecting the input
power to let the intermediate circuit capacitors discharge.
•
Do not do work on the drive when a rotating permanent magnet motor is
connected to it. A rotating permanent magnet motor energizes the drive,
including its input and output terminals.
1. Unpack the delivery
Keep the drive in its package until you are ready to install it. After unpacking,
protect the drive from dust, debris and moisture.
Make sure that these items are included:
•
drive
•
assistant control panel
•
options, if ordered
•
RIIO-01 I/O & EIA-485 module.
Note:
If a fieldbus adapter is ordered, it
replaces the RIIO-01 module of the standard delivery.
•
mounting template (frames R3 and R4 only)
•
installation accessories (cable clamps, etc.)
•
multilingual warning sticker sheet (residual voltage warning)
•
safety instructions
•
quick installation and start-up guide
•
hardware and firmware manuals, if ordered.
Make sure that there are no signs of damage to the items.
2. Reform the capacitors
If the drive has not been powered up for a year or more, you must reform the DC
link capacitors. The manufacturing date is on the type designation label. Refer
to
Capacitor reforming instructions
3. Select the cables and fuses
•
Select the power cables. Obey the local regulations.
•
Input power cable:
ABB recommends to use symmetrical shielded cable
(VFD cable) for the best EMC performance.
•
Motor cable:
Use symmetrical shielded cable (VFD cable) for the best EMC
performance. Symmetrical shielded cable also reduces bearing currents,
wear, and stress on motor insulation.
•
Power cable types:
In IEC installations, use copper or aluminum cables (if
permitted). In UL installations, use only copper cables.
•
Current rating:
max. load current.
•
Voltage rating:
min. 600 V AC.
•
Temperature rating:
In IEC installations, select a cable rated for at least
70
°C (158
°F) maximum permissible temperature of conductor in
continuous use. In UL installations, select a cable rated for at least 75
°C
(167
°F).
•
Size:
Fuses and typical power cable sizes
for the typical cable
sizes and to
Terminal data for the power cables
for the maximum cable
sizes.
•
Select the control cables. Use double-shielded twisted-pair cable for analog
signals. Use double-shielded or single-shielded cable for the digital, relay and
I/O signals. Do not run 24 V and 115/230 V signals in the same cable.
•
Protect the drive and input power cable with the correct fuses. Refer to
Fuses and typical power cable sizes
.
4. Examine the installation area
The drive is intended for cabinet installation and has a degree of protection of
IP20 / UL open type.
Examine the site where you will install the drive. Make sure that:
•
The installation site is sufficiently ventilated and hot air does not recirculate.
•
There is sufficient free space around the drive for cooling, maintenance, and
operation. For the minimum free space requirements, refer to
.
•
The ambient conditions meet the requirements. Refer to
.
•
The installation surface is as close to vertical as possible and strong enough
to support the weight of the drive. Refer to
•
The installation surface, floor and materials near the drive are not flammable.
•
There are no sources of strong magnetic fields, such as high-current single-
core conductors or contactor coils near the drive. A strong magnetic field
can cause interference in the operation of the drive.
5. Install the drive
You can install the drive with screws, or to a DIN rail (top hat type, width × height
= 35 mm × 7.5 mm [1.4 in × 0.3 in]).
•
Install R0 drives vertically. R0 drives do not have a cooling fan.
•
You can install drives with frame size R1…R4 tilted by a maximum of
90 degrees, from vertical to fully horizontal orientation.
•
Do not install the drive upside down.
•
You can install several drives side by side.
—
ABB DRIVES FOR HVAC
ACH480 drives
Quick installation and start-up guide
To install the drive with screws
1. Make marks onto the surface for the
mounting holes. Refer to
. Use the included mounting
template for frames R3 and R4.
2. Drill the holes for the mounting screws. If
necessary, install suitable plugs or
anchors into the holes.
3. Install the mounting screws into the
holes. Leave a gap between the screw
head and installation surface.
4. Put the drive onto the mounting screws.
5. Tighten the mounting screws.
To install the drive to a DIN rail
1. Move the locking part to the left.
If
necessary, use a flat-head screwdriver.
2. Push and hold the locking button down.
3. Put the top tabs of the drive onto the top
edge of the DIN rail.
4. Put the drive against the bottom edge of
the DIN rail.
5. Release the locking button.
6. Move the locking part to the right.
7. Make sure that the drive is correctly
installed.
To remove the drive, open the locking part
and lift the drive from the DIN rail.
6. Measure the insulation resistance
Drive:
Do not do voltage tolerance or insulation resistance tests on the drive,
because this can cause damage to the drive.
Input power cable:
Before you connect the input power cable, measure the
insulation of the input power cable. Obey the local regulations.
Motor and motor cable
:
1. Make sure that the motor cable is connected to the motor and disconnected
from the drive output terminals T1/U, T2/V and T3/W.
2. Use a voltage of 1000 V DC to measure the
insulation resistance between each phase
conductor and the protective earth
conductor. The insulation resistance of an
ABB motor must be more than 100 Mohm (at
25 °C [77 °F]). For the insulation resistance of
other motors, refer to the manufacturer’s
documentation. Moisture in the motor
decreases the insulation resistance. If you
think that there is moisture in the motor, dry the motor and do the
measurement again.
7. Make sure that the drive is compatible with the
grounding system
You can connect all drive types to a symmetrically grounded TN-S system
(center-grounded wye). The drive is delivered with the EMC and VAR screws
installed. The material of the screws (plastic or metal) depends on the product
variant. The table shows when to remove the metal EMC screw (disconnect the
internal EMC filter) or metal VAR screw (disconnect the varistor circuit).
8. Connect the power cables
Connection diagram (shielded cables)
1. Disconnecting device.
2. Two protective earth (ground) conductors. Drive safety standard
IEC/EN 61800-5-1 requires two PE conductors, if the cross-sectional area of
the PE conductor is less than 10 mm
2
Cu or 16 mm
2
Al. For example, you can
use the cable shield in addition to the fourth conductor.
3. Use a separate grounding cable or a cable with a separate PE conductor for
the line side, if the conductivity of the fourth conductor or shield does not
meet the requirements for the PE conductor.
4. Use a separate grounding cable for the motor side, if the conductivity of the
shield is not sufficient, or if there is no symmetrically constructed PE
conductor in the cable.
5. 360-degree grounding of the cable shield is required for the motor cable and
brake resistor cable (if used). It is also recommended for the input power
cable.
6. Brake resistor and resistor cable (optional).
Connection procedure (shielded cables)
For the tightening torques, refer to
Terminal data for the power cables
1. Loosen the screw on the front cover.
Then lift the front cover up.
2. Attach the residual voltage warning
sticker in the local language to the drive.
3. Strip the motor cable.
4. Ground the motor cable shield under the
grounding clamp.
5. Twist the motor cable shield into a
bundle, mark it and connect it to the
grounding terminal.
Screw
label
Factory default
screw material
Grounding systems
Symmetrically
grounded TN-S
systems (center-
grounded wye)
Corner-grounded
delta, midpoint-
grounded delta and
TT systems
IT systems
(ungrounded or
high-resistance
grounded)
EMC
Metal
Do not remove
Remove
Remove
Plastic
1)
1) UL (NEC) types have a plastic EMC screw.
Do not remove
2)
2) Can install the metal screw (included in the drive delivery) to connect the internal EMC filter.
Do not remove
Do not remove
VAR
Metal
Do not remove
Do not remove
Remove
Plastic
Do not remove
Do not remove
Do not remove
W
H
M1
M2
U1
V1
W1
PE
M
3~
ohm
U1-PE, V1-PE, W1-PE
PE
PE
L1
L2
L3
R-
R+
UDC+ UDC-
U1
W1
M
PE
3
T1/
U
T2/
V
T3/
W
V1
L1
L2
L3
(L)
(N)
ACH480
2
3
4
6
5
1
6. Connect the phase conductors of the
motor cable to terminals T1/U, T2/V and
T3/W.
7. If used, connect the brake resistor cable
to terminals R- and UDC+. Use a shielded
cable and ground the shield under the
grounding clamp.
8. Make sure that the R- and UDC+ terminal
screws are tightened. Do this step also if
you do not connect cables to the
terminals.
9. Strip the input power cable.
10. If the input power cable has a shield,
ground the shield under the grounding
clamp. Then twist the shield into a
bundle, mark it and connect it to the
grounding terminal.
11. Connect the PE conductor of the input
power cable to the grounding terminal. If necessary, use a second PE
conductor.
12. In 3-phase drives, connect the phase conductors of the input power cable to
terminals L1, L2 and L3. In 1-phase drives, connect the phase and neutral
conductors to terminals L1 and L2.
13. Mechanically attach the cables on the outside of the drive.
9. Install the communication module
To install the communication module (I/O
module or fieldbus module):
1. Pull out the locking tab of the
communication module.
2. Align the communication module
contacts with the contacts on the drive.
Carefully push the module into position.
3. Push in the locking tab of the
communication module.
4. Tighten the locking screw to fully attach
and electrically ground the
communication module.
10. Connect the control cables
Keep the signal wire pairs twisted as near to the terminals as possible to
prevent inductive coupling. The tightening torque for the terminal connections
is 0.5 … 0.6 N·m (4.4 … 5.3 lbf·in).
1. Strip a part of the outer shield of the
control cable for grounding.
2. Use a cable tie to ground the outer shield
to the grounding tab.
3. Strip the control cable conductors.
4. Connect the conductors to the correct
control terminals.
5. Connect the shields of the twisted pairs
and grounding wires to the SCR terminal.
6. Mechanically attach the control cables on
the outside of the drive.
Default I/O connections (HVAC default)
Embedded fieldbus connection
You can connect the drive to an EIA-485 serial communication link through the
embedded fieldbus interface on the RIIO-01 module. The embedded fieldbus
interface supports the BACnet MS/TP, Modbus RTU, and N2 protocols.
To configure EIA-485 communication with the embedded fieldbus:
1. Connect the fieldbus cables and the necessary I/O signals.
2. Use the termination switch to set the correct termination.
3. Power up the drive and set the necessary parameters.
A connection example is shown below.
1) The devices at the ends of the fieldbus must have termination set to ON. All other devices
must have termination set to OFF (1).
2) Attach the cable shields together at each drive, but do not connect them to the drive.
Connect the shields only to the grounding terminal in the automation controller.
3) Connect the signal ground (DGND) conductor to the signal ground reference terminal in
the automation controller. If the automation controller does not have a signal ground
reference terminal, you can connect the signal ground to the cable shields through a
100 ohm resistor, preferably near the controller.
Terminal
Description
1)
1) × = on base unit, empty = on RIIO-01 I/O extension module
Reference voltage and analog I/O
1
SCR Signal cable shield (screen)
2
AI1
Output freq./speed reference: 0 … 10 V
3
AGND Analog input circuit common
4
+10 V Reference voltage 10 V DC
5
AI2 Actual feedback: 0 … 20 mA
6
AGND Analog input circuit common
7
AO1 Output frequency: 0 … 20 mA
8
AO2 Output current: 0 … 20 mA
9
AGND Analog output circuit common
Aux. voltage output and programmable digital inputs
10
+24 V Aux. voltage 24 V DC, max. 250 mA
11 DGND Aux. voltage output common
12 DCOM Digital input common for all
13
DI1
Stop (0)/Start (1)
14
DI2 Not configured
15
DI3 Constant frequency/speed selection
16
DI4 Start interlock 1 (1 = allow start)
17
DI5 Not configured
18
DI6 Not configured
Relay outputs
19
RO1C
Damper control
20
RO1A
250 V AC / 30 V DC
21
RO1B
2 A
22 RO2C
Running
23
RO2A
250 V AC / 30 V DC
24
RO2B
2 A
25
RO3C
Fault (-1)
26
RO3A
250 V AC / 30 V DC
27
RO3B
2 A
Safe torque off
34 SGND Safe torque off (STO). Both circuits must be closed for the
drive to start. The drawing shows the simplified
connection of a safety circuit through safety contacts. If
STO is not used, leave the factory-installed jumpers in
.
35
IN1
36
IN2
37
OUT1
1
2
3
4
1 … 10 kohm
Max. 500 ohm
G
R
-
+
B+
A-
DGND
B+
A-
DGND
ON
1
B+
A-
DGND
ON
1
ON
1
Automation
controller
Termination ON
1)
Drive
Termination OFF
Drive
Termination ON
1)
Drive
Termination OFF
3)
2)