Terminal - Danfoss VLT AutomationDrive FC 303 Instruction Manual

Installation
Figure 2.14 Location of Terminals 53 and 54 Switches and Bus
Termination Switch

2.4.5.8 Terminal 37

Terminal 37 Safe Stop Function
The FC 302 and FC 301 (optional for A1 enclosure) is
available with safe stop functionality via control terminal
37. Safe stop disables the control voltage of the power
semiconductors of the Adjustable frequency drive output
stage which in turn prevents generating the voltage
required to rotate the motor. When the Safe Stop (T37) is
activated, the Adjustable frequency drive issues an alarm,
trips the unit, and coasts the motor to a stop. Manual
restart is required. The safe stop function can be used for
stopping the Adjustable frequency drive in emergency
stop situations. In the normal operating mode when safe
stop is not required, use the adjustable frequency drive's
regular stop function instead. When automatic restart is
used – the requirements according to ISO 12100-2
paragraph 5.3.2.5 must be fulfilled.
Liability Conditions
It is the responsibility of the user to ensure personnel
installing and operating the Safe Stop function:
VLT ® AutomationDrive Instruction
Manual
User is defined as: integrator, operator, servicing,
maintenance staff.
Standards
Use of safe stop on terminal 37 requires that the user
satisfies all provisions for safety including relevant laws,
regulations and guidelines. The optional safe stop function
complies with the following standards.
The information and instructions of the instruction manual
are not sufficient for a proper and safe use of the safe stop
functionality. The related information and instructions of
the relevant Design Guide must be followed.
Protective Measures
®
MG.33.AI.22 - VLT is a registered Danfoss trademark
•
Read and understand the safety regulations
concerning health and safety/accident prevention.
•
Understand the generic and safety guidelines
given in this description and the extended
description in the Design Guide.
•
Have a good knowledge of the generic and safety
standards applicable to the specific application.
EN 954-1: 1996 Category 3
IEC 60204-1: 2005 category 0 – uncontrolled stop
IEC 61508: 1998 SIL2
IEC 61800-5-2: 2007 – safe torque off (STO)
function
IEC 62061: 2005 SIL CL2
ISO 13849-1: 2006 Category 3 PL d
ISO 14118: 2000 (EN 1037) – prevention of
unexpected start-up
•
Safety engineering systems may only be installed
and commissioned by qualified and skilled
personnel.
•
The unit must be installed in an IP54 cabinet or
in an equivalent environment.
•
The cable between terminal 37 and the external
safety device must be short circuit protected
according to ISO 13849-2 table D.4
•
If any external forces influence the motor axis
(e.g., suspended loads), additional measures (e.g.,
a safety holding brake) are required in order to
eliminate hazards.
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