Safe Stop Installation (Fc 302 And Fc 301 - A1 Enclosure Only) - Danfoss VLT AutomationDrive FC 300 Design Manual

3. Introduction to FC 300

3.11.2. Safe Stop Installation (FC 302 and FC 301 - A1 enclosure only)

To carry out an installation of a Catego-
ry 0 Stop (EN60204) in conformance
with Safety Category 3 (EN954-1), fol-
low these instructions:
3
1.
2.
3.
The illustration below 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.
Illustration 3.6: Illustration of the essential aspects of an installation to achieve a Stopping Category 0 (EN
60204-1) with safety Category 3 (EN 954-1).
3.11.3. Installation for Safe Stop in combination with MCB112
If the Ex-certified thermistor module MCB112, which uses Terminal 37 as its safety-related switch-
off channel, is connected, then the output X44/11 of MCB112 must be AND-ed with the safety-
related sensor (such as emergency stop button, safety-guard switch, etc.) that activates Safe Stop.
The AND logic itself must conform to EN 954-1, Safety Category 3. The connection from the output
of the safe AND logic to Safe Stop terminal 37 must be short-circuit protected. See figure below:
52
The bridge (jumper) between Termi-
nal 37 and 24 V DC must be re-
moved. Cutting or breaking the
jumper is not sufficient. Remove it
entirely to avoid short-circuiting. See
jumper on illustration.
Connect terminal 37 to 24 V DC by a
short-circuit protected cable. The 24
V DC voltage supply must be inter-
ruptible by an EN954-1 Category 3
circuit interrupt device. If the inter-
rupt device and the frequency con-
verter are placed in the same instal-
lation panel, you can use a regular
cable instead of a protected one.
Unless the FC302 itself has protec-
tion class IP54 and higher, it must be
placed in an IP 54 enclosure. Conse-
quently, FC301 A1 must always be
placed in an IP 54 enclosure.
MG.33.B9.02 - VLT
Illustration 3.5: Bridge jumper between terminal
37 and 24 VDC
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FC 300 Design Guide