Danfoss VLT HVAC Drive User Manual

1.1.10. Safe Stop of the Adjustable Frequency Drive
For versions fitted with a safe stop terminal 37 input, the adjustable frequency drive can perform
the safety function
Safe Torque Off (As defined by draft CD IEC 61800-5-2) or Stop Category 0
(as defined in EN 60204-1).
It is designed and deemed suitable for the requirements of Safety Category 3 in EN 954-1. This
functionality is called Safe Stop. Prior to integrating and using safe stop in an installation, a thor-
ough risk analysis must be carried out on the installation in order to determine whether the safe
stop functionality and safety category are appropriate and sufficient. In order to install and use
the Safe Stop function in accordance with the requirements of Safety Category 3 in EN 954-1, the
related information and instructions of the VLT HVAC Drive Design Guide MG.11.BX.YY must be
followed! The information and instructions contained in the Instruction Manual are not sufficient
for a correct and safe use of the safe stop functionality!
VLT
®
HVAC Drive Instruction Manual 1. Safety
MG.11.A4.22 - VLT
®
is a registered Danfoss trademark 7
1

Danfoss VLT HVAC Drive Specifications

General

Type	VLT HVAC Drive
STO (Safe Torque Off)	Yes
Enclosure	IP20
Output Frequency	0-500 Hz
Brake Chopper	Built-in (depending on frame size)
EMC Filter	Built-in (depending on frame size)
Communication	Ethernet
Power Range	0.37 kW to 630 kW
Input Voltage	200-240V, 380-480V, 525-600V
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Ambient Temperature	-10°C to +50°C (with derating above +40°C)
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% (non-condensing)
Cooling Method	Air-cooled