Danfoss VLT AutomationDrive FC 302 Design Guide

FC 300 Design Guide
Introduction to FC 300
" Acoustic Noise
The acoustic interference from the adjustable frequency drive comes from three sources:
1. DC intermed iate circuit coils.
2. Integral fan.
3. RFI components.
The typical values measured at a distance of 3.3 ft (1 m) from the unit:
FC 301/ FC 302
PK25-P7K5: 200-240 V, 380-500 V, 525-600V IP20/IP21/IP4Xtop/Type 1 (NEMA 1)
Reduced fan speed 51 dB(A)
Full fan speed 60 dB(A)
" Safe Stop of FC 300
The adj ustable frequency drive can perform the Designated Safety Function "Uncontrolled Stopping by
removal of power" (as defined by draft IEC 61 800-5-2) or Stop Category 0 (as defined in EN 60204-1).
It is designed and approved suitable for the requi rements of Safety Category 3 in EN
954-1. This functionality is called Safe Stop.
The Safe Stop function is activated by removing the voltage at Terminal 37 of the Safe Inverter. By connecting
the Safe Inverter to external safety devices providing a safe delay, an installation for a safe Stop Category
1 can be obtained. The safe inverter can be used for asynchronous and synchronous motors.
Safe Stop activation (i.e. removal of 24 V DC voltage s upply t o terminal 37)
does not provide electrical safety.
" Safe Stop Op eration
1. Activate the S afe Stop function by rem oving the 24 V DC voltage supply to the terminal 3 7.
2. After activation of Safe Stop, the ad justa ble frequency drive coasts (stops creat-
ing a rotational field in the motor).
The adjustable frequency drive is guaranteed not to resta rt the motor by a n internal
fault (in accordance with Cat. 3 of EN 954-1 ).
After activation of S afe Stop, the FC 30 2 display will show the text "Safe Stop active". The associated
help text says "Safe Stop has bee
n activated. To resume norm al o p eration, apply 24 V DC to
terminal 37, then send Reset signal (via Bus, Digital I/O, or the [Reset] key)." This means that the
Safe Stop has been activated, or that normal operation has not been resumed yet after a Safe Stop
activation. NB: The requi
rements o f EN 945-1 Ca tegory 3 are only fulfilled while 24 V DC supply
to terminal 37 is removed or below minimum deactivation level (> 5 V DC).
In order to resume operation after activation of Safe Stop, first 24 V DC voltage must be
reapplied to terminal 37 (text "Safe Stop active" is still displayed), sec ond a Reset signal must
be created (via bus, D
igital I/O, or [Reset] key on inverter).
54
MG.33.B3.22 - VLT is a registered Danfoss trademark

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English