Danfoss VLT Design Guide

2.6.2 Safe Stop Installation
To carry out an installation of a Category 0 Stop
(EN60204) in conformity with Safety Category 3 (EN954-1),
follow these instructions:
1. The bridge (jumper) between Terminal 37 and 24
V DC must be removed. Cutting or breaking the
jumper is not sufficient. Remove it entirely to
avoid short-circuiting. See jumper in
Illustration 2.2.
2. Connect terminal 37 to 24 V DC by a short-circuit
protected cable. The 24 V DC voltage supply
must be interruptible by an EN954-1 Category 3
circuit interrupt device. If the interrupt device and
the frequency converter are placed in the same
installation panel, use an unscreened cable
instead of a screened one.
Illustration 2.2 Bridge Jumper between Terminal 37 and 24 V DC
Illustration 2.3 shows a Stopping Category 0 (EN 60204-1)
with safety Category 3 (EN 954-1). The circuit interrupt is
caused by an opening door contact. The illustration also
shows how to connect a non-safety related hardware
coast.
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Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)