TOSHIBA VF-S15 frequency converter

TOSHIBA VF-S15 frequency converter

Basic information of the document

Scope of Application

The document specifically lists the applicable models (including multiple voltage levels) for the Toshiba VF-S15 series frequency converter, as shown in the table below. Models marked with suffixes such as "Y-A38" and "Y-A65" are not applicable.

Example of input voltage level frequency converter model

Single phase 200V-240V VFS52S-2002PL__/- W1/Y-A *, VFS52S-2004PL__/- W1/Y-A*

Three phase 200V-240V VFS15-2002PM_/- W1/Y-A *, VFS15-2004PM_/- W1/Y-A*

Three phase 380V-500V VFS15-4004PL_/- W1/Y-A *, VFS15-4007PL_/- W1/Y-A*

Three phase 525V-600V VFS15-6015P_/- W1/Y-A *, VFS15-6022P_/- W1/Y-A*

Safety warnings and personnel qualifications

1. Warning system

The document categorizes safety warnings into two types, specifying risk levels and response requirements:

Warning type meaning Typical scenarios

Warning operation errors may result in death or serious injury. Touching live cables, repairing without discharge, and short circuiting DC bus capacitors

Incorrect operation of the solution may result in minor injuries or equipment damage, voltage incompatibility, capacitor aging, and performance degradation

2. Core security taboos (Warning level)

Do not touch live cables (such as printed circuit boards) inside the frequency converter, and use insulated tools;

Before maintenance, it is necessary to follow the process of "power off → paste the prohibition closing label → lock the power-off switch → wait for 15 minutes to discharge → measure the DC bus voltage<42V";

Do not short-circuit PA/+and PC/- terminals or DC bus capacitors;

Before powering on, all cover plates must be installed and closed.

3. Personnel qualification requirements

Only qualified personnel are allowed to operate (subject to the following conditions):

Having received safety training, able to identify and mitigate risks;

Familiar with this manual and product documentation, proficient in electrical/mechanical system knowledge;

Understand international/national electrical codes and accident prevention regulations.

Detailed explanation of core security functions

1. STO (Safe Torque Off)

Function definition: To put the motor into a torque free state (prohibiting motor start or free stop), cut off the energy supply to the motor, corresponding to IEC 60204-1 stop category 0 (uncontrolled stop).

**According to * *: IEC 61800-5-2 § 4.2.2.2, it should be noted that additional mechanical brakes are required for suspended load scenarios, and electronic components cannot replace anti electric shock isolation measures.

Security level:

Configuration method SIL (IEC 61508) PL (ISO 13849-1) EN 954-1 category

With/without Preventa module SIL 2 PL d 3

Key parameters: response time<10ms, logic input 0<2V, 1>17V, impedance 1.5k Ω.

Module requirements: Mechanical applications (compliant with IEC 60204-1) require mandatory use of Preventa modules (such as XPS AF) to prevent accidental restarts; Use as needed in other scenarios.

2. SS1 (Safe Stop 1, Safety Stop Class 1, Type C)

Function definition: First, slow down the motor according to the specified time delay. After the delay ends, trigger the STO function, corresponding to IEC 60204-1 stop category 1 (control stop).

Normative basis: IEC 61800-5-2 § 4.2.2.2, requires the use of specific safety relays to implement delay logic.

Security level:

Configuration method SIL (IEC 61508) PL (ISO 13849-1) EN 954-1 category

STO+Previnta module (such as XPS AV) SIL 2 PL d 3

Application logic: The deceleration delay time needs to be set according to the actual scenario, and the motor will enter a torque free state after the delay ends.

Compliance standards and safety performance

1. Follow the standards

Specific core requirements for standard categories

IEC 61800 series variable speed electric drive system safety requirements for drive systems

Functional Safety IEC 61508 Ed.2 Electrical/Electronic/Programmable Systems Functional Safety, Defining SIL Levels

Mechanical safety ISO 13849-1/2, EN 954-1 Safety components of mechanical control systems, defining PL levels and categories

Process Safety IEC 62061 Process Industry Safety Instrumented Systems, Distinguishing Global/Component SIL

2. Safety performance indicators

Taking the STO function as an example, the key performance parameters are shown in the following table:

Explanation of Indicator Values

SFF (Safety Failure Score) 96.7% represents the proportion of safety failures to total failures, reflecting the safety of the system

MTTFd (Mean Time to Failure) is the average interval between system failures in the year 16200

PFHequ_1y (annual hazard failure probability) 7.04 FIT 1FIT=10 ⁻⁹ times/hour, which means the annual failure probability is extremely low

HFT (Hardware Fault Tolerance) 1 allows one hardware fault to maintain safety functionality

Equipment type B complies with the definition of Class B subsystems in IEC 61508

System architecture and application limitations

1. Authentication architecture (3 types)

The document provides three certified security system architectures, adapted to different application scenarios:

Architecture Type Applicable Scenarios Core Configuration Compliance Standards