Inovance MD520 Series Parts list manual

<Original instructions>
2

‑1‑
Preface
Preface
Introduction
The MD520 series general‑purpose AC drive developed by Inovance provides high‑
performance current vector control. It is designed to control and regulate the speed
and torque of three‑phase AC asynchronous motors. The AC drive can be used to
drive a variety of automated production equipment, such as textile machines, paper
machines, wire drawing machines, machine tools, packaging machines, food
machines, fans, and water pumps.
The MD520 series AC drive can implement the STO safety function and control the
safety function through an external terminal (referred to as a local trigger in this
document). This guide presents the safety information, instructions for mechanical
and electrical installation, commissioning and maintenance guidance, and safety‑
related parameters of the AC drive.
More Documents
Name Data Code Description
MD520 Series AC Drive
Safety Function Guide
(this document)
19011795 Presents the safety information,
instructions for mechanical and electrical
installation, commissioning and
maintenance guidance, and safety‑related
parameters of the AC drive.
MD520 Series AC Drive
Quick Installation and
Commissioning Guide
19011712 Presents the installation, wiring,
commissioning, troubleshooting,
parameters, and fault codes of the AC
drive.
MD520 Series AC Drive
Hardware Guide
19011713 Presents the composition, technical
specifications, components, dimensions,
options (including installation
accessories, cables, and peripheral
electrical components), and extension
cards of the AC drive, as well as routine
maintenance and repair, and certification
and standard compliance of the AC drive.
MD520 Series AC Drive
Installation Guide
19011714 Presents the installation dimensions,
space design, specific installation steps,
wiring requirements, routing
requirements, and option installation
requirements of the AC drive, as well as
solutions to common EMC problems.
MD520 Series AC Drive
Commissioning Guide
19011715 Presents the software tools, processes,
and specific steps of commissioning of the
AC drive, as well as troubleshooting, fault
codes, and parameters related to the AC
drive.

-2-
Preface
Name Data Code Description
MD520 Series AC Drive
Communication Guide
19011716 Presents the communication modes,
networking, and communication settings
of the AC drive.
MD520 Series AC Drive
Function Guide
19011717 Presents the function applications,
communication, fault codes, and
parameters of the AC drive.
Revision History
Date of Revision Version Description
June 2022 A00 First release
second environment".
September 2022 A01 In section 1.3, add "IEC61800-5-2:2016 in
October 2022 A02 Update the note on page 16.

TTaabbllee ooff CCoonntteennttss
Preface.............................................................................. 1
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 STO Safety Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.2 Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4 Precautions for Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2 Product Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.1 Nameplate and Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2 Cable Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.1 Main Circuit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.2 Selection of Control Circuit Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3 Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.2 Components of T1 to T6 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3 Components of T7 to T9 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.4 Components of T10 to T12 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4 Operating Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1 LED Operating Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.1 Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.2 Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.3 Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5.4 Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.5 Unpacking and Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.5.1 Package Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.5.2 Transportation Before Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.5.3 Transportation and Hoisting After Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.5.4 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.5.5 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.6 Cable Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.7 Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.7.1 Installation Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.7.2 Inspection Before Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.7.3 Installing the AC Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table of Contents

‑4‑
5.7.3.1 Backplate Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
5.7.3.2 Through‑Hole Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
5.7.3.3 Installation in a Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
5.7.4 Inspection After Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.8 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.8.1 Inspection Before Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.8.2 Main Circuit Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.8.3 Control Circuit Terminals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.8.4 Inspection After Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.8.5 Electrical Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6 Wiring........................................................................... 76
6.1 Safety Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6.2 STO Terminals (J14) and Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7 Safety Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7.1 Safety Function Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7.2 Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7.3 STO........................................................................ 80
7.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7.3.2 Triggering STO in Local Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7.3.3 Time Sequence Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
8 Commissioning, Operation, and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
8.1 Commissioning, Operation, and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
9 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
9.1 Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
9.1.1 Daily Inspection Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
9.1.2 List of Periodic Inspection Items. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
9.2 Main Circuit Insulation Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
9.3 Replacement of Quick‑Wear Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
9.3.1 Service Life of Quick‑Wear Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
9.3.2 Replacing the Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
9.3.3 Replacing the Filter Electrolytic Capacitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
9.4 Storage and Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Table of Contents

-5-
Safety Precautions
Safety Precautions
Safety disclaimer
1. This section presents essential safety instructions for proper use of the equipment.
Before operating the equipment, read through the user guide and comprehend all
the safety instructions. Failure to comply with the safety instructions may result in
damage to equipment, severe injuries, or even death.
2. "CAUTION", "WARNING", and "DANGER" messages in the guide are supplementary
only and do not cover all safety precautions.
3. Use the AC drive according to the designated environment requirements. Damage
caused by improper use is not covered by warranty.
4. Inovance shall take no responsibility for any physical injuries or property damage
caused by improper use.
Safety levels and definitions
Indicates that failure to comply with the notice will result in severe
injuries or even death.
Indicates that failure to comply with the notice may result in severe
injuries or even death.
Indicates that failure to comply with the notice may result in minor
injuries or equipment damage.
Safety precautions
●Some drawings in this guide show the equipment without covers or protective
guards to display more details. Be sure to install the covers and protective guards
before using the equipment and operate it in accordance with the instructions.
●Product drawings in this guide are for reference only and may be slightly different
from the product you ordered.
Unpacking and Acceptance
●Do not install the equipment if you find damage, rust, or signs of use on the equipment
or its accessories upon unpacking.
●Do not install the equipment in case of water seepage in the equipment, part missing or
part damage.
●Do not install the equipment if the packing list does not match the product you received.

-6-
Safety Precautions
●Before unpacking, check whether the packing is intact without damage, water seepage,
damp, and deformation.
●Unpack the package by following the unpacking sequence. Do not strike the package
violently.
●When unpacking, check the surface of the equipment and accessories for damage, rust,
and scratches.
●After unpacking, check the equipment, accessories, and materials in the package against
the packing list.
Storage and Transportation
●Use specialized hoisting equipment and qualified staff to move large-scale or heavy
equipment. Failure to comply may result in physical injuries or equipment damage.
●Before hoisting the equipment, ensure that the equipment components such as the
front cover and terminal blocks are secured firmly with screws. Loosely-connected
components may fall off and result in physical injuries or equipment damage.
●Never stand or stay below a lifted or hoisted equipment.
●When lifting the equipment with a steel wire rope, lift it steadily at a constant rate to
prevent it from vibration, shock, and turnover. Do not keep the equipment lifted for a
long time. Failure to comply may result in injuries or equipment damage.
●Handle the equipment with care and mind your steps. Failure to comply may result in
physical injuries or equipment damage.
●When carrying the equipment with bare hands, hold the equipment casing firmly with
care to prevent parts from falling. Failure to comply may result in physical injuries.
●Store and transport the equipment in strict accordance with the storage and
transportation requirements. Failure to comply will result in equipment damage.
●Avoid storing or transporting the equipment in environments with water splash, rain,
direct sunlight, strong electric field, strong magnetic field, and strong vibration.
●Avoid storing the equipment for more than 3 months. Long-term storage requires
stricter protection and necessary inspections.
●Pack the equipment strictly before transportation. Use a sealed box for long-distance
transportation.
●Never transport the equipment with other equipment or materials that may harm or
have negative impacts on it.
Installation
●Operations must be carried out by professionals who have received necessary electrical
training. Operations by non-professionals are strictly prohibited.

-7-
Safety Precautions
●Read through the guide and safety precautions before installation.
●Do not install this equipment in places with strong electric or magnetic fields.
●Before installation, make sure that the installation position is mechanically strong
enough to bear the weight of the equipment. Failure to comply may result in mechanical
hazards.
●Do not wear loose clothes or accessories during installation. Failure to comply may
result in electric shock.
●When the equipment is installed in an enclosed environment (such as a cabinet or
casing), ensure adequate cooling of the environment by using cooling devices (such as a
fan or an air conditioner). Failure to comply may result in equipment over-temperature
or fire.
●Do not modify the equipment.
●Do not fiddle with the bolts used to fix equipment components or the bolts marked in
red.
●When the equipment is installed in a cabinet or final assembly, provide a fireproof
enclosure that provides adequate electrical and mechanical protection conforming to
relevant IEC standards and local laws and regulations.
●Before installing equipment with strong electromagnetic interference, such as a
transformer, install an electromagnetic shielding device for this equipment to prevent
malfunctions.
●Install the equipment onto an incombustible object such as metal. Keep the equipment
away from combustible objects. Failure to comply will result in fire.
●Cover the top of the equipment with cloth or paper during installation to prevent
unwanted objects such as metal chippings, oil, and water from falling into the
equipment and causing faults. After installation, remove the cloth or paper to prevent
over-temperature caused by poor ventilation due to blocked ventilation holes.
●Resonance may occur when a machine supposed to run at a constant speed is running
at variable speeds. In this case, place anti-vibration rubber under the motor frame or use
the vibration suppression function to reduce resonance.
Wiring
●Never allow non-qualified personnel to install, wire, inspect or maintain the equipment
or replace any parts of the equipment.
●Before wiring, cut off all equipment power supplies. Wait for at least the time specified
on the equipment warning label after power-off so that residual voltage can discharge
safely. Measure the DC voltage on the main circuit to ensure that it is within the safe
voltage range. Failure to comply may result in electric shock.
●Do not perform wiring, remove the equipment cover, or touch the circuit board when
power is on. Failure to comply will result in electric shock.
●Make sure that the AC drive and related equipment are properly grounded. Failure to
comply may result in electric shock.

-8-
Safety Precautions
●Never connect the input power cable to output terminals of the product or other
equipment. Failure to comply may result in equipment damage or even fire.
●When connecting a drive to a motor, ensure consistency of terminal phase sequences
between the drive and the motor to prevent reverse motor rotation.
●Use cables with required diameter and shield. Properly ground one end of the shield if a
shielded cable is used.
●Tighten terminal screws with tightening torque specified in this guide. Failure to comply
may result in overheat and damage to the connection parts or even fire.
●After wiring, ensure that all cables are connected properly and no screws, washers, or
exposed cables are left inside the equipment. Failure to comply may result in electric
shock or equipment damage.
●During wiring, follow the proper electrostatic discharge (ESD) procedures, and wear an
antistatic wrist strap. Failure to comply will result in damage to internal equipment
circuits.
●Use shielded twisted pairs for the control circuit. Connect the shield to the grounding
terminal of the equipment. Failure to comply will result in equipment malfunction.
Power-on
●Before power-on, make sure that the equipment is installed properly with reliable wiring
and the motor can be restarted.
●Before power-on, ensure that the power supply meets requirements. Failure to comply
may result in equipment damage or even fire.
●After power-on, do not open the cabinet door or protective cover, touch any terminal, or
dismantle any device or components. Failure to comply may result in electric shock.
●After wiring and parameter setting, carry out a trial run to ensure safe and proper
functioning of the equipment. Failure to comply may result in physical injuries or
equipment damage.
●Before power-on, make sure that the voltage of the power supply matches the rated
voltage of the equipment. Using an improper voltage may result in fire.
●Before power-on, ensure that no one is near the equipment, motor, or machine. Failure
to comply may result in physical injuries or even death.
Operation
●Never allow non-qualified personnel to operate the equipment. Failure to comply may
result in physical injuries or even death.
●Do not touch any connecting terminals or disassemble any unit or component of the
equipment during operation. Failure to comply will result in electric shock.

-9-
Safety Precautions
●Do not touch the housing, fan, or resistor of the equipment to check temperature.
Failure to comply may result in burns.
●During operation, prevent metal and other foreign objects from falling into the
equipment. Failure to comply may result in fire or equipment damage.
Maintenance
●Never allow non-qualified personnel to install, wire, inspect or maintain the equipment
or replace any parts of the equipment.
●Never carry out maintenance when power is on. Failure to comply may result in electric
shock.
●Before maintenance, cut off all equipment power supplies and wait at least a period of
time specified on the equipment warning label.
●In case of a permanent magnet motor, do not touch the motor terminals immediately
after power-off because the motor terminals will generate induced voltage during
rotation even after the equipment power supply is cut off. Failure to comply may result
in electric shock.
●Perform routine and periodic inspection and maintenance on the equipment according
to maintenance requirements and keep a maintenance record.
Repair
●Never allow non-qualified personnel to install, wire, inspect or maintain the equipment
or replace any parts of the equipment.
●Do not repair the equipment when power is on. Failure to comply may result in electric
shock.
●Before inspection or repair, cut off all equipment power supplies and wait at least a
period of time specified on the equipment warning label.
●Require for repair services according to the equipment warranty agreement.
●When the fuse is blown or the circuit breaker or earth leakage current breaker (ELCB)
trips, wait for at least the time designated on the equipment warning label before
power-on or further operations. Failure to comply may result in death, physical injuries,
or equipment damage.
●When the equipment fails or is damaged, arrange for qualified technicians to
troubleshoot and repair the equipment in accordance with the maintenance
instructions and retain a maintenance record.
●Replace quick-wear parts of the equipment according to the replacement instructions.
●Do not use damaged equipment. Failure to comply may result in death, physical injuries,
or severe equipment damage.
●After replacing equipment, make sure to re-check wiring and parameter settings.

-10-
Safety Precautions
Disposal
●Dispose of retired equipment in accordance with local regulations and standards.
Failure to comply may result in property damage, physical injuries, or even death.
●Recycle retired equipment in accordance with waste disposal standards of the industry
to avoid environmental pollution.
Safety labels
For safe equipment operation and maintenance, comply with the safety labels on the
equipment. Do not damage or remove the safety labels. See the following table for
descriptions of the safety labels.
Safety Label Description
●Read through the safety instructions before operating the equipment.
Failure to comply may result in equipment damage, physical injuries,
or even death.
●Do not touch terminals or remove the cover when power is on or
within 10 minutes after power is cut off. Failure to comply may result
in electric shock.

General
‑11‑
1 General
1.1 STO Safety Function
Safety function for safety drives
●STO
The Safe Torque Off (STO) function immediately blocks the motor torque or power
output in electronic mode according to input signals from external devices. This
function complies with stop category 0 in EN 60204‑1. If the motor is still rotating
when the STO function is enabled, the motor will coast to a standstill.
1.2 Terms and Abbreviations
Term/Abbr. Description
Cat. Category of safety components in the control system. The categories
are B, 1, 2, 3, and 4.
DCavg Average diagnostic coverage (%)
DTI Diagnostic test interval
SFF Safe failure fraction
PFHd Probability of dangerous failure on demand per hour
PL Performance level
SC System capability
SIL Safety integrity level
T1Proof test interval
DI Digital input
DO Digital output
MTTFd Mean time to dangerous failure
1.3 Safety Standards
Standards compliance
●North American standards (UL)
UL 61800‑5‑1
CSA C22.2 No. 274
●EC directives and standards
Low Voltage Directive 2014/35/EU Standard EN 61800‑5‑1
EMC Directive 2014/30/EU Standard EN 61800‑3

General
-12-
Machinery Directive 2006/42/EC
(functional safety) Standard IEC61800-5-2 in second environment
●Safety standards
Model Safety Standard Reference
MD520**** Functional safety IEC 61508:2010
ISO 13849-1:2015
ISO 13849-2:2012
IEC 62061:2021
IEC 61800-3:2017
EN 61508:2010
EN ISO 13849-1:2015
EN ISO 13849-2:2012
EN IEC 62061:2021
EN IEC 61800-3:2018
EMC IEC 61000-6-7:2014
IEC 61326-3-1:2017
IEC 61800-5-2:2016
IEC 61800-3:2017
EN 61000-6-7:2015
EN 61326-3-1:2017
EN 61800-5-2:2017
EN IEC 61800-3:2018
LVD IEC 61800-5-1:2007/AMD1:2016
EN 61800-5-1:2007/A1:2017
●Safety data
Item Safety Data
SIL SIL3, IEC61508
PFHd 3.13E-09, 3.1% of SIL3, IEC61508
Cat. 3, EN ISO 13849-1
PL e, EN ISO 13849-1
MTTFd 326 years (high)
DCavg ≥90% (medium)
T120 years
HFT 1
SC SC3
Application mode High demand or continuous mode
1.4 Precautions for Use
Safety precautions
This section describes warning symbols used for safety functions and provides safety
instructions to be observed during installation and maintenance of safety modules for
Response time (nominal voltage) ≤ 20 ms

General
‑13‑
the drive or inverter. Failure to comply with the safety precautions may result in
damage to equipment, physical injuries, or even death. Read this section before
starting installation.
The figures, pictures, and examples in this guide are for reference only, and may not
be applicable to all products covered by this guide.
As products and documentation upgrade, the specifications described in the safety
function section may be modified without advanced notice.
Table 1–1 Warning symbols
Symbol Text Description Consequence
Example:
Electric shock
DANGER Critical risk Ignoring the warning
will lead to severe
injuries or even
death.
WARNING Major risk Ignoring the warning
may lead to severe
injuries or even
death.
CAUTION Minor risk Ignoring the warning
may lead to minor
injuries.
STOP! Damage to
equipment or
environment
Ignoring the warning
may lead to damage
to equipment or
environment.
Note
●Users must incorporate safety measures in system design and electrical
installation for both normal operation and troubleshooting.
●The design, installation, commissioning, and maintenance of the system must be
implemented by trained and experienced professionals. They should read the
operation guide and related safety information.
Anyone using the safety function must observe current mechanical criteria. Before
putting a machine onto the market, the manufacturer or its licensor is obliged to
carry out hazard analysis (in accordance with applicable mechanical criteria), take
appropriate measures to reduce or eliminate relevant hazards, and select compliant
elements based on the hazard analysis result.
The following describes the information required before starting operation.
●Before operation, read the following safety precautions, risk assessment
information, and restriction information.

General
‑14‑
●Before using the safety function, properly understand all the related information.
Note
If the safety function is used incorrectly or the safety function does not meet safety
requirements at the site, physical injuries may arise.
Safety measures
Carefully read and observe the following important precautions when using the safety
function:
●The STO function is not a substitute for the emergency stop (E‑stop) function. If
only the STO function is triggered, with no extra measures taken, and the power
supply cannot be cut off in emergency, high‑voltage parts of the motor and drive
are still energized. This may incur the risk of electric shock or other electricity‑
related risks. Therefore, carry out maintenance of electrical parts of the drive or
motor only after isolating the drive system from the main power supply.
●Depending on standards and requirements for particular applications, STO may be
used as part of an E‑stop system. However, different from the E‑stop function, STO
is designed for use in a dedicated safety control arrangement whose purpose is to
prevent hazards from occurring.
●The E‑stop function is typically provided in a machine to allow operators to notice
unexpected situations and take actions to prevent accidents.
●The design requirements for E‑stop are different from safety interlock. Generally,
E‑stop shall be independent from any complex or intelligent control. It may use
purely electromechanical devices to disconnect the power supply or initiate a
controlled rapid stop using other means such as dynamic or regenerative braking.

General
‑15‑
●The design of safety‑related systems requires specialist knowledge. To ensure the
safety of the entire control system, it is necessary to design the entire system
according to recognized safety rules. An individual subsystem with the STO
function, although intentionally designed for safety‑related applications, cannot
ensure the safety of the entire system.
●In emergency stop situations, the STO function can be used to stop the drive.
●In processes without personnel protection, do not to use the STO function to stop
the drive. If the STO function is used to stop a running drive, the drive will coast to
stop. If this is unacceptable, stop the system using a proper mode instead of the
STO function.
●This publication provides a guide on the application of Inovance STO function and
also on the design of safety‑related systems for machinery control.
●It is the responsibility of the designer of the end product or application to ensure
safety and compliance with relevant regulations.
Risk assessment
●Before using the safety function, perform risk assessment on the drive system in
advance to ensure compliance with the standard safety integrity level.
●The following residual risks can be present even when the safety function is
operating. Therefore, safety must always be considered during risk assessment.
●If external forces (such as gravity on the vertical axis) are applied when the safety
function is operating, the motor will rotate due to these external forces. In this
case, provide a separate mechanical brake to secure the motor.
Note
●When multiple faults occur on the IGBT power transistor, the drive will produce an
aligning torque regardless of whether the STO function is used. This torque may
drive the motor shaft to rotate to a maximum angle of (180 ÷ p).
●p indicates the number of motor pole pairs.
To guarantee safety, users must determine all the assessed risks and residual risks of
the integrated equipment. Companies and individuals that establish safety‑related
systems must be solely responsible for system installation and commissioning. In
addition, relevant sub‑systems subject to the European Machinery Directive must be
certified against safety standards, and risks and safety levels must be assessed for the
machine or the entire system.

General
-16-
The following describes the residual risks related to the safety function of this
equipment.
Common residual risks
●Before shipping the equipment to end users, check the settings of safety-related
parts using the programming tool and the display. Record and save the settings
related to the safety monitoring function and the programming tool that you use.
Use a checklist during this process.
●Safety rests with proper installation, wiring, and tuning. Follow instructions in the
safety guide during installation, wiring, and commissioning.
●Installation, trial run, repair, and commissioning must be carried out by skilled
personnel only. Only relevant safety engineers are allowed to install and operate
the equipment.
●Separate the wiring for the safety function from other signal wiring.
●Protect cables using proper methods (such as using cable guards when routing in
a cabinet).
●Use switches, relays, and sensors that comply with safety standards. If switches,
relays, or sensors that do not comply with safety standards are used, verify the
safety.
●Reserve adequate clearances or creepage distances based on the voltage used.
●The time error in safety monitoring depends on parameter settings.
●STO
This function cuts off only the motor torque but not the drive power supply. Before
drive maintenance, cut off the power supply to the drive and confirm that the
drive is de-energized.
Note
Power on to reset the AC drive, and then trigger the STO function at least once every
three months.

Product Information
-17-
2 Product Information
2.1 Nameplate and Model Number
Figure 2-1 Nameplate and designation rules
①Product name
MD520: AC drive series
②Voltage class
4T: Three-phase 380 V to 480 V
2T: Three-phase 200 V to 240 V
2S:
Single-phase 200 V to 240 V
③Power rating (kW)
0.4: 0.4
...
400: 400
Reactor
Null: See the description
below.
-T: A DC reactor is provided,
and it is applicable to the T5
models.
-L: An output AC reactor is
provided, and it is applicable
to the T10 to T12 models.
Braking unit
Null: Not provided
B: Provided
④
⑥
⑦
(a)
⑦
Null: Not provided
Customer identity
(a): The model number may
include a suffix “XXXXXXXXXX”,
Where“XXXXXXXXXX” can be
blank or combination of any
alphanumeric and/orsymbols
that represents customer
identity.
⑤
Safety function
Null: Not provided
S: STO function provided
(a)

Product Information
‑18‑
Note
●For three‑phase 380 V to 480 V drives, reactors are not supported by T1 to T4
models, whereas the DC reactor is optional for T5 models and standard for T6
models and above.
●For three‑phase 380 V to 480 V drives, the braking unit is standard for T1 to T4
models and optional for T5 to T8 models.
2.2 Cable Models
2.2.1 Main Circuit Cables
Power cable selection
Observe national or regional regulations when selecting power cables. IEC cables
must meet the following requirements:
●EN 60204‑1 and IEC 60364‑5‑52 standards
●PVC cable with copper conductors
●Withstanding 40°C ambient temperature and 70°C cable surface temperature
(Note: Contact the manufacturer if the ambient temperature exceeds 40°C.)
●Symmetrical cables with copper mesh shield
If the recommended cable specifications for peripheral devices or optional parts
exceed the applicable cable specification range, contact Inovance.
To comply with the EMC standards, use shielded cables. Shielded cables are classified
into the three‑conductor cables and four‑conductor cables, as shown in the following
figure. If a three‑conductor cable is used but its shield cannot provide sufficient
conductivity, add an independent PE cable. Alternatively, use a four‑conductor cable
containing a PE conductor. To suppress radio frequency interference effectively, use
coaxial copper braid as the cable shield. Ensure that the braided density is greater
than 90% to enhance the shielding performance and conductivity.

Product Information
‑19‑
Figure 2‑2 Recommended power cable types
Recommended cables
Table 2–1 Cable selection (three‑phase 380 V to 480 V)
Structure Model
RST/UVW Ground Cable
Screw
Tightening
Torque
N·m
(lb.in)
Cable Size
(mm2)<1> Cable Lug Cable Size
(mm2)<1> Cable Lug
T1 MD520‑4T0.4B(S) 3 x 0.75 TNR0.75‑4 0.75 TNR5.5‑5 M4 1.2
(10.6)
MD520‑4T0.7B(S) 3 x 0.75 TNR0.75‑4 0.75 TNR8‑5 M4
MD520‑4T1.1B(S) 3 x 0.75 TNR0.75‑4 0.75 TNR5.5‑5 M4
MD520‑4T1.5B(S) 3 x 0.75 TNR0.75‑4 0.75 TNR8‑5 M4
MD520‑4T2.2B(S) 3 x 0.75 TNR0.75‑4 0.75 TNR5.5‑5 M4
MD520‑4T3.0B(S) 3 x 1.5 TNR1.25‑4 1.5 TNR8‑5 M4
T2 MD520‑4T3.7B(S) 3 x 2.5 TNR2‑4 2.5 TNR5.5‑5 M4
MD520‑4T5.5B(S) 3 x 4 TNR3.5‑5 4 TNR8‑5 M5 2.8
(24.8)
T3 MD520‑4T7.5B(S) 3 x 6 TNR5.5‑5 6 TNR5.5‑5 M5
MD520‑4T11B(S) 3 x 10 TNR8‑5 10 TNR8‑5 M5
T4 MD520‑4T15B(S) 3 x 10 TNR8‑5 10 TNR8‑5 M5
T5 MD520‑4T18.5(B)(S) 3 x 16 GTNR16‑6 16 GTNR16‑6 M6 4.8
(45.2)
MD520‑4T18.5(B) (S)‑T 3 x 16 GTNR16‑6 16 GTNR16‑6 M6
MD520‑4T22(B) (S) 3 x 16 GTNR16‑6 16 GTNR16‑6 M6
MD520‑4T22(B) (S)‑T 3 x 16 GTNR16‑6 16 GTNR16‑6 M6
T6 MD520‑4T30(B) (S) 3 x 25 GTNR25‑6 16 GTNR16‑6 M6
MD520‑4T37(B) (S) 3 x 35 GTNR35‑6 16 GTNR16‑6 M6
T7 MD520‑4T45(B) (S) 3 x 50 GTNR50‑8 25 GTNR25‑8 M8 13
(115.2)
MD520‑4T55(B) (S) 3 x 70 GTNR70‑8 35 GTNR35‑8 M8