ABB ACH580-31 User manual

—
ABB INDUSTRIAL DRIVES
ACH580-31 drives
Hardware manual

ACH580-31 drives
Hardware manual
Table of contents
1. Safety instructions
4. Mechanical installation
6. Electrical installation – IEC
10. Start-up
3AXD50000037066 Rev F
EN
Original instructions
EFFECTIVE: 2022-10-14

Table of contents
1 Safety instructions
17Contents of this chapter .........................................................................................
17Use of warnings and notes .....................................................................................
18General safety in installation, start-up and maintenance ................................
20Electrical safety in installation, start-up and maintenance .............................
20Electrical safety precautions ..........................................................................
21Additional instructions and notes .................................................................
21Printed circuit boards ..........................................................................
22Grounding ...........................................................................................................
23General safety in operation ....................................................................................
23Additional instructions for permanent magnet motor drives ........................
23Safety in installation, start-up, maintenance ..............................................
24Safety in operation ...........................................................................................
2 Introduction to the manual
25Contents of this chapter .........................................................................................
25Target audience ........................................................................................................
25Purpose of the manual ............................................................................................
25Categorization by frame size and option code ..................................................
26Quick installation, commissioning and operation flowchart ..........................
27Terms and abbreviations ........................................................................................
29Related documents ..................................................................................................
3 Operation principle
31Contents of this chapter .........................................................................................
31Operation principle ..................................................................................................
32Active braking function (option +N8056 ) ...................................................
32DC voltage boost function ..............................................................................
33Benefits of the DC voltage boost ......................................................
33Impact of DC voltage boost on input current .................................
33DC connection ...................................................................................................
34Layout .........................................................................................................................
36Overview of power and control connections ......................................................
37Control panel .............................................................................................................
38Control panel door mounting kits .................................................................
38Control panel mounting platform cover (option +J424) ...........................
38Remote control panel, panel bus ...................................................................
40Type designation label ............................................................................................
Table of contents 5

41Type designation key ...............................................................................................
41Basic code ...........................................................................................................
41Option codes ......................................................................................................
4 Mechanical installation
43Contents of this chapter .........................................................................................
43Cabinet installation (option +P940) .....................................................................
43Flange mounting (option +C135) ..........................................................................
44Safety ..........................................................................................................................
44Examining the installation site ..............................................................................
44Installation positions ...............................................................................................
45Free space requirements ........................................................................................
46Necessary tools .........................................................................................................
47Moving the drive .......................................................................................................
47Unpacking and examining delivery .......................................................................
53Installing the drive vertically ..................................................................................
55Installing the drive vertically side by side ............................................................
55Installing the drive horizontally .............................................................................
5 Guidelines for planning the electrical installation
57Contents of this chapter .........................................................................................
57Limitation of liability ...............................................................................................
57Selecting the main supply disconnecting device ...............................................
58European Union and United Kingdom ..........................................................
58North America ....................................................................................................
58Other regions .....................................................................................................
58Implementing a fast switch over between the power line and generator .....
58Selecting the main contactor .................................................................................
59North America ....................................................................................................
59Other regions .....................................................................................................
59Examining the compatibility of the motor and drive ........................................
59Protecting the motor insulation and bearings ...........................................
60Requirements tables ........................................................................................
60Requirements for ABB motors, P
n< 100 kW (134 hp) ....................
61Requirements for ABB motors, P
n> 100 kW (134 hp) ....................
62Requirements for non-ABB motors, P
n< 100 kW (134 hp) ............
63Requirements for non-ABB motors, P
n> 100 kW (134 hp) ............
64Abbreviations ........................................................................................
64
Availability of d u /d t filter and common mode filter by drive
type ..........................................................................................................
64Additional requirements for explosion-safe (EX) motors ............
64
Additional requirements for ABB motors of types other than M2_,
M3_, M4_, HX_ and AM_ .......................................................................
64Additional requirements for braking applications ........................
6 Table of contents

64
Additional requirements for the regenerative and low harmonics
drives .......................................................................................................
64Additional requirements for ABB high-output and IP23 motors ..
65
Additional requirements for non-ABB high-output and IP23
motors .....................................................................................................
66
Additional data for calculating the rise time and the peak
line-to-line voltage ................................................................................
67Additional note for sine filters ...........................................................
68Selecting the power cables ....................................................................................
68General guidelines ............................................................................................
68Typical power cable sizes ................................................................................
68Power cable types .............................................................................................
68Preferred power cable types ..............................................................
69Alternate power cable types ...............................................................
70Not allowed power cable types ..........................................................
70Additional guidelines – North America .........................................................
71Metal conduit .........................................................................................
71Power cable shield ............................................................................................
72Grounding requirements ........................................................................................
73Additional grounding requirements – IEC ....................................................
74Additional grounding requirements – UL (NEC) .........................................
74Selecting the control cables ...................................................................................
74Shielding .............................................................................................................
74Signals in separate cables ...............................................................................
74Signals that can be run in the same cable ....................................................
75Relay cable ..........................................................................................................
75Control panel to drive cable ............................................................................
75PC tool cable ......................................................................................................
75Routing the cables ...................................................................................................
75General guidelines – IEC ...................................................................................
76General guidelines – North America ..............................................................
77
Continuous motor cable shield/conduit or enclosure for equipment on
the motor cable .................................................................................................
78Separate control cable ducts ..........................................................................
78
Protecting the drive, input power cable, motor and motor cable in short
circuit situations and against thermal overload ................................................
78Protecting the drive and the input power cable in short-circuits ...........
79Circuit breakers .................................................................................................
79Protecting the motor and motor cable in short-circuits ..........................
79Protecting the motor cables against thermal overload ............................
80Protecting the motor against thermal overload ........................................
80
Protecting the motor against overload without thermal model or
temperature sensors ........................................................................................
Table of contents 7

80Implementing a motor temperature sensor connection .................................
81
Connecting a motor temperature sensor to the drive through an option
module .................................................................................................................
82Protecting the drive against ground faults .........................................................
82Residual current device compatibility ..........................................................
82Implementing the emergency stop function ......................................................
82Implementing the Safe torque off function ........................................................
82Implementing the power loss ride-through function .......................................
83Using power factor compensation capacitors with the drive ........................
84Using a safety switch between the drive and the motor .................................
84Implementing an ATEX-certified motor thermal protection ...........................
84Controlling a contactor between drive and motor ............................................
85Implementing a bypass connection .....................................................................
86Example bypass connection ...................................................................................
86Switching the motor power supply from drive to direct-on-line ............
87Switching the motor power supply from direct-on-line to drive ............
87Protecting the contacts of relay outputs ............................................................
88Limiting relay output maximum voltages at high installation altitudes ......
88Implementing a motor temperature sensor connection .................................
89
Connecting a motor temperature sensor to the drive through an option
module .................................................................................................................
6 Electrical installation – IEC
91Contents of this chapter .........................................................................................
91Safety ..........................................................................................................................
91Required tools ...........................................................................................................
91Grounding the motor cable shield at the motor end ........................................
92Measuring the insulation ........................................................................................
92Measuring the insulation resistance of the drive .......................................
92Measuring the insulation resistance of the input power cable ...............
92Measuring the insulation resistance of the motor and motor cable ......
93Measuring the insulation resistance of the brake resistor circuit ..........
93Grounding system compatibility check ...............................................................
93EMC filter ............................................................................................................
94Ground-to-phase varistor ................................................................................
94
When to disconnect EMC filter or ground-to-phase varistor: TN-S, IT,
corner-grounded delta and midpoint-grounded delta systems and TT
systems ...............................................................................................................
97Identifying the grounding system of the electrical power network .......
98
Disconnecting integrated EMC filter and ground-to-phase varistor –
frame R3 ..............................................................................................................
99
Disconnecting integrated EMC filter and ground-to-phase varistor –
frame R6 ..............................................................................................................
100
Disconnecting integrated EMC filter and ground-to-phase varistor –
frame R8 ..............................................................................................................
8 Table of contents

101Connecting the power cables ................................................................................
101Connection diagram .........................................................................................
102Connection procedure .....................................................................................
109R8 power cable connection if you detach the cable connectors ..
110Connecting the control cables ...............................................................................
110Connection diagram .........................................................................................
110Connection procedure .....................................................................................
115Installing option modules .......................................................................................
115Option slot 2 (I/O extension modules) .........................................................
116Option slot 1 (fieldbus adapter modules) ....................................................
116Wiring the optional modules ..........................................................................
117Reinstalling cover(s) ................................................................................................
118Connecting a PC .......................................................................................................
118Connecting a remote panel, or chaining one panel to several drives ............
7 Electrical installation – North America (NEC)
119Contents of this chapter .........................................................................................
119Safety ..........................................................................................................................
119Required tools ...........................................................................................................
120Measuring the installation ......................................................................................
120Grounding system compatibility check ...............................................................
120Connecting the power cables ................................................................................
120Connection diagram .........................................................................................
121Connection procedure .....................................................................................
128Connecting the control cables ...............................................................................
128Connection diagram .........................................................................................
128Connection procedure .....................................................................................
132Installing optional modules ....................................................................................
133Reinstalling cover(s) ................................................................................................
134Connecting a PC .......................................................................................................
134Connecting a remote panel, or chaining one panel to several drives ............
8 Control unit
135Contents of this chapter .........................................................................................
136Layout .........................................................................................................................
137Default I/O connection diagram ...........................................................................
137Default I/O connection diagram ....................................................................
139Switches ..............................................................................................................
139Additional information on I/O connections ........................................................
139PNP configuration for digital inputs (X2 & X3) ............................................
140NPN configuration for digital inputs (X2 & X3) ...........................................
140Connection for obtaining 0…10 V from analog output 2 (AO2) ..............
140
Connection examples of two-wire and three-wire sensors to analog
input (AI2) ...........................................................................................................
Table of contents 9

141DI5 as frequency input .....................................................................................
141DI6 as PTC input ................................................................................................
141
AI1 and AI2 as Pt100, Pt1000, Ni1000, KTY83 and KTY84 sensor inputs
(X1) .......................................................................................................................
142Safe torque off (X4) ..........................................................................................
142Technical data ...........................................................................................................
9 Installation checklist
147Contents of this chapter .........................................................................................
147Checklist .....................................................................................................................
10 Start-up
151Contents of this chapter .........................................................................................
151Reforming the capacitors .......................................................................................
151Start-up procedure ..................................................................................................
11 Maintenance
153Contents of this chapter .........................................................................................
153Maintenance intervals .............................................................................................
153Description of symbols ....................................................................................
153Recommended maintenance intervals after start-up ...............................
155Cleaning the exterior of the drive .........................................................................
156Cleaning the heatsink ..............................................................................................
156Fans .............................................................................................................................
157Replacing the main cooling fan, frame R3 ....................................................
158Replacing the main cooling fan, frame R6 ...................................................
159Replacing the main cooling fan, frame R8 ...................................................
160
Replacing the auxiliary cooling fan of frame R3, IP55 (UL Type 12) and
+C135 IP21 (UL Type 1) ......................................................................................
161Replacing the auxiliary cooling fan, frame R6 .............................................
162
Replacing the second auxiliary cooling fan, IP55 (UL Type 12) frame
R6 ..........................................................................................................................
163Replacing the auxiliary cooling fan, frame R8 .............................................
164
Replacing the second internal auxiliary cooling fan, IP55 (UL Type 12)
frame R8 ..............................................................................................................
165
Replacing the auxiliary cooling fan in the IP55 (UL Type 12) cover, frame
R8 ..........................................................................................................................
167Capacitors ..................................................................................................................
167Reforming the capacitors ................................................................................
167Control panel .............................................................................................................
167Drive LEDs ..................................................................................................................
168Functional safety components ..............................................................................
10 Table of contents

12 Technical data
169Contents of this chapter .........................................................................................
169Electrical ratings .......................................................................................................
169IEC ratings ..........................................................................................................
170UL (NEC) ratings ................................................................................................
171Definitions ..........................................................................................................
172Sizing ...................................................................................................................
172Deratings ............................................................................................................
172Derating in case of several situations ..............................................
173Surrounding air temperature derating .............................................
174Altitude derating ...................................................................................
175Switching frequency derating ............................................................
177Output voltage boost derating ..........................................................
178Fuses (IEC) .................................................................................................................
179aR fuses DIN 43653 stud-mount ....................................................................
180aR fuses DIN 43620 blade style ......................................................................
180gG fuses DIN 43620 blade style ......................................................................
181Calculating the short-circuit current of the installation ...........................
181Calculation example .............................................................................
182Fuses (UL) ..................................................................................................................
184Circuit breakers (IEC) ...............................................................................................
184ABB miniature and molded case circuit breakers .......................................
185Circuit breakers (UL) ................................................................................................
188Dimensions, weights and free space requirements ..........................................
188Free space requirements .................................................................................
189Package dimensions and weights .................................................................
190Losses, cooling data and noise .............................................................................
192
Cooling air flow and heat dissipation for flange mounting (option
+C135) ..................................................................................................................
194Terminal and entry data for the power cables ...................................................
194IEC ........................................................................................................................
194UL .........................................................................................................................
195Terminal and entry data for the control cables ..................................................
195IEC ........................................................................................................................
195UL .........................................................................................................................
195Typical power cables ...............................................................................................
198Electrical power network specification ...............................................................
200Motor connection data ............................................................................................
201CCU-24 control unit connection data ...................................................................
201Efficiency ....................................................................................................................
201Energy efficiency data (EU ecodesign) ................................................................
202Protection classes for module ...............................................................................
202Colors ..........................................................................................................................
202Materials .....................................................................................................................
202Drive .....................................................................................................................
Table of contents 11

202
Package materials for small wall-mounted drives and converter
modules ...............................................................................................................
202
Package materials for large wall-mounted drives and converter
modules ...............................................................................................................
203Package materials for options, accessories and spare parts ..................
203Materials of manuals ........................................................................................
203Disposal ......................................................................................................................
203Applicable standards ...............................................................................................
204Ambient conditions .................................................................................................
205Markings .....................................................................................................................
206Compliance with the EN 61800-3:204 + A1:2012 ................................................
206Definitions ..........................................................................................................
207Category C2 ........................................................................................................
208Category C3 ........................................................................................................
208Category C4 ........................................................................................................
209UL checklist ................................................................................................................
210Declarations of conformity ....................................................................................
211Design lifetime expectancy ....................................................................................
211Disclaimers ................................................................................................................
211Generic disclaimer ............................................................................................
211Cybersecurity disclaimer .................................................................................
13 Dimension drawings
214R3, IP21 (UL Type 1) ...................................................................................................
215R3 – Option +B056 (IP55, UL Type 12) ...................................................................
216R6, IP21 (UL Type 1) ..................................................................................................
217R6 – Option +B056 (IP55, UL Type 12) ..................................................................
218R8, IP21 (UL Type 1) ..................................................................................................
219R8 – Option +B056 (IP55, UL Type 12) ..................................................................
14 The Safe torque off function
221Contents of this chapter .........................................................................................
221Description ................................................................................................................
222
Compliance with the European Machinery Directive and the UK Supply
of Machinery (Safety) Regulations ................................................................
223Wiring ..........................................................................................................................
223Connection principle ........................................................................................
223Single ACH580-31 drive, internal power supply ..............................
224Single ACH580-31 drive, external power supply .............................
224Wiring examples ................................................................................................
224Single ACH580-31 drive, internal power supply ..............................
225Single ACH580-31 drive, external power supply .............................
226Multiple ACH580-31 drives, internal power supply ........................
227Multiple ACH580-31 drives, external power supply ........................
12 Table of contents

228Activation switch ...............................................................................................
228Cable types and lengths ..................................................................................
228Grounding of protective shields ....................................................................
229Operation principle ..................................................................................................
230Start-up including validation test .........................................................................
230Competence .......................................................................................................
230Validation test reports .....................................................................................
230Validation test procedure ...............................................................................
232Use ...............................................................................................................................
234Maintenance ..............................................................................................................
234Competence .......................................................................................................
235Fault tracing ..............................................................................................................
236Safety data .................................................................................................................
238Terms and abbreviations .................................................................................
240TÜV certificate ...................................................................................................
240Declarations of conformity .............................................................................
15 Resistor braking
243Contents of this chapter .........................................................................................
243Operation principle ..................................................................................................
243Planning the braking system .................................................................................
243Selecting the default brake system components ......................................
244Selecting a custom brake resistor .................................................................
245Selecting and routing the brake resistor cables .........................................
245Minimizing electromagnetic interference .......................................
245Maximum cable length .........................................................................
246Placing the brake resistors .............................................................................
246Protecting the system against thermal overload .......................................
246Protecting the system in fault situations ....................................................
247Protecting the resistor cable against short-circuits .................................
247Mechanical installation ............................................................................................
247Electrical installation ...............................................................................................
247Measuring the installation ..............................................................................
248Connection diagram .........................................................................................
248Connection procedure .....................................................................................
248Start-up ......................................................................................................................
249Technical data ...........................................................................................................
249Ratings ................................................................................................................
249Terminals and cable entry data ......................................................................
16 Common mode, d u /d t and sine filters
251Contents of this chapter .........................................................................................
251Common mode filters ..............................................................................................
Table of contents 13

251d u /d t filters ...............................................................................................................
251When is a d u /d t filter needed? .......................................................................
252d u /d t filter types ..............................................................................................
253Description, installation and technical data of the filters ............
253Sine filters ..................................................................................................................
17 CAIO-01 bipolar analog I/O adapter module
255Contents of this chapter .........................................................................................
255Product overview ......................................................................................................
256Layout .........................................................................................................................
257Mechanical installation ............................................................................................
257Necessary tools .................................................................................................
257Unpacking and examining the delivery .........................................................
257Installing the module ........................................................................................
257Electrical installation ...............................................................................................
257Necessary tools .................................................................................................
257Wiring ..................................................................................................................
258Start-up ......................................................................................................................
258Setting the parameters ...................................................................................
259Diagnostics ................................................................................................................
259LEDs .....................................................................................................................
259Technical data ...........................................................................................................
260Isolation areas ...................................................................................................
261Dimension drawings ................................................................................................
18 CHDI-01 115/230 V digital input extension module
263Contents of this chapter .........................................................................................
263Product overview ......................................................................................................
264Layout and connection examples .........................................................................
265Mechanical installation ............................................................................................
265Necessary tools .................................................................................................
265Unpacking and examining the delivery .........................................................
265Installing the module ........................................................................................
265Electrical installation ...............................................................................................
265Necessary tools .................................................................................................
265Wiring ..................................................................................................................
265Start-up ......................................................................................................................
265Setting the parameters ...................................................................................
266Parameter setting example for relay output ...................................
266Fault and warning messages .................................................................................
266Technical data ...........................................................................................................
267Dimension drawing ..................................................................................................
14 Table of contents

19 CMOD-01 multifunction extension module (external 24 V AC/DC
and digital I/O)
269Contents of this chapter .........................................................................................
269Product overview ......................................................................................................
270Layout and example connections .........................................................................
271Mechanical installation ............................................................................................
271Necessary tools .................................................................................................
271Unpacking and examining the delivery .........................................................
271Installing the module ........................................................................................
271Electrical installation ...............................................................................................
271Necessary tools .................................................................................................
271Wiring ..................................................................................................................
272Start-up ......................................................................................................................
272Setting the parameters ...................................................................................
273Diagnostics ........................................................................................................
273Faults and warning messages ............................................................
273LEDs .........................................................................................................
273Technical data ...........................................................................................................
274Dimension drawing ..................................................................................................
20 CMOD-02 multifunction extension module (external 24 V AC/DC
and isolated PTC interface)
277Contents of this chapter .........................................................................................
277Product overview ......................................................................................................
278Layout and example connections .........................................................................
279Mechanical installation ............................................................................................
279Necessary tools .................................................................................................
279Unpacking and examining the delivery .........................................................
279Installing the module ........................................................................................
279Electrical installation ...............................................................................................
279Necessary tools .................................................................................................
279Wiring ..................................................................................................................
280Start-up ......................................................................................................................
280Setting the parameters ...................................................................................
280Diagnostics ................................................................................................................
280Faults and warning messages ........................................................................
280LEDs .....................................................................................................................
280Technical data ...........................................................................................................
281Dimension drawing ..................................................................................................
Further information
Table of contents 15

16

Safety instructions
Contents of this chapter
This chapter contains the safety instructions which you must obey when you install,
start-up, operate and do maintenance work on the drive. If you ignore the safety
instructions, injury, death or damage can occur.
Use of warnings and notes
Warnings tell you about conditions which can cause injury or death, or damage to
the equipment. They also tell you how to prevent the danger. Notes draw attention
to a particular condition or fact, or give information on a subject.
The manual uses these warning symbols:
WARNING!
Electricity warning tells about hazards from electricity which can cause injury
or death, or damage to the equipment.
WARNING!
General warning tells about conditions other than those caused by electricity,
which can cause injury or death, or damage to the equipment.
WARNING!
Electrostatic sensitive devices warning tells you about the risk of electrostatic
discharge which can cause damage to the equipment.
1
Safety instructions 17

General safety in installation, start-up and maintenance
These instructions are for all personnel who do work on the drive.
WARNING!
Obey these instructions. If you ignore them, injury or death, or damage to
the equipment can occur.
• Keep the drive in its package until you install it. After unpacking, protect the
drive from dust, debris and moisture.
• Use the required personal protective equipment: safety shoes with metal toe
cap, safety glasses, protective gloves and long sleeves, etc. Some parts have
sharp edges.
• Lift a heavy drive with a lifting device. Use the designated lifting points. See
the dimension drawings.
• Be careful when handling a tall module. The module overturns easily because
it is heavy and has a high center of gravity. Whenever possible, secure the
module with chains. Do not leave an unsupported module unattended especially
on a sloping floor.
• Beware of hot surfaces. Some parts, such as heatsinks of power
semiconductors, and brake resistors, remain hot for a while after disconnection
of the electrical supply.
• Vacuum clean the area around the drive before the start-up to prevent the
drive cooling fan from drawing dust inside the drive.
• Make sure that debris from drilling, cutting and grinding does not go into the
drive during installation. Electrically conductive debris inside the drive can
cause damage or malfunction.
• Make sure that there is sufficient cooling. See the technical data.
• Before you connect voltage to the drive, make sure that all covers are in place.
Do not remove the covers when voltage is connected.
18 Safety instructions
3

• Before you adjust the drive operation limits, make sure that the motor and all
driven equipment can operate throughout the set operation limits.
• Before you activate the automatic fault reset or automatic restart functions
of the drive control program, make sure that no dangerous situations can
occur. These functions reset the drive automatically and continue operation
after a fault or supply break. If these functions are activated, the installation
must be clearly marked as defined in IEC/EN/UL 61800-5-1, subclause 6.5.3,
for example, "THIS MACHINE STARTS AUTOMATICALLY".
• The maximum number of drive power-ups is five in ten minutes. Too frequent
power-ups can damage the charging circuit of the DC capacitors.
• If you have connected safety circuits to the drive (for example, Safe torque off
or emergency stop), validate them at start-up. See separate instructions for
the safety circuits.
• Beware of hot air exiting from the air outlets.
• Do not cover the air inlet or outlet when the drive is running.
Note:
• If you select an external source for the start command and it is on, the drive
will start immediately after fault reset unless you configure the drive for pulse
start. See the firmware manual.
• If the drive is in remote control mode, you cannot stop or start the drive with
the control panel.
• Only authorized persons are allowed to repair a malfunctioning drive.
Safety instructions 19

Electrical safety in installation, start-up and maintenance
￭Electrical safety precautions
These electrical safety precautions are for all personnel who do work on the drive,
motor cable or motor.
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 installation or
maintenance work.
Do these steps before you begin any installation or maintenance work.
1. Clearly identify the work location and equipment.
2. Disconnect all possible voltage sources. Make sure that re-connection is not
possible. Lock out and tag out.
• Open the main disconnecting device of the drive.
• If you have a permanent magnet motor connected to the drive, disconnect
the motor from the drive with a safety switch or by other means.
• Disconnect all dangerous external voltages from the control circuits.
• After you disconnect power from the drive, always wait 5 minutes to let
the intermediate circuit capacitors discharge before you continue.
3. Protect any other energized parts in the work location against contact.
4. Take special precautions when close to bare conductors.
5. Measure that the installation is de-energized. Use a quality voltage tester.
Before and after measuring the installation, verify the operation of the
voltage tester on a known voltage source.
•
• Make sure that the voltage between the drive input power terminals (L1,
L2, L3) and the grounding (PE) busbar is zero.
•Make sure that the voltage between the drive output terminals (T1/U, T2/V,
T3/W) and the grounding (PE) busbar is zero.
Important! Repeat the measurement also with the DC voltage setting of
the tester. Measure between each phase and ground. There is a risk of
dangerous DC voltage charging due to leakage capacitances of the motor
circuit. This voltage can remain charged for a long time after the drive
power-off. The measurement discharges the voltage.
• Make sure that the voltage between the drive DC terminals (UDC+ and
UDC-) and the grounding (PE) terminal is zero.
Note: If cables are not connected to the drive DC terminals, measuring the
voltage from the DC terminal screws can give incorrect results.
20 Safety instructions
3