Field Installation Of Options - Danfoss vlt fc 300 Instruction Manual

®
VLT Automation Drive FC 300 12-Pulse
How to Install
Instruction Manual High Power

3.3 Field Installation of Options

Space Heaters and Thermostat
Mounted on the cabinet interior of frame size F10-F14
adjustable frequency drives, space heaters controlled via
automatic thermostat help control humidity inside the
enclosure, extending the lifetime of adjustable frequency
drive components in damp environments. The thermostat
default settings turn on the heaters at 10°C (50°F) and turn
them off at 15.6°C (60°F).
Cabinet Light with Power Outlet
A light mounted on the cabinet interior of frame size F10-
F14 adjustable frequency drives increase visibility during
servicing and maintenance. The housing light includes a
power outlet for temporarily powering tools or other
devices, available in two voltages:
•
230 V, 50 Hz, 2.5 A, CE/ENEC
•
120 V, 60 Hz, 5 A, UL/cUL
Transformer Tap Set-up
If the cabinet light and outlet and/or the space heaters
and thermostat are installed, Transformer T1 requires the
taps to be set to the proper input voltage. A 380–480/500
V unit is initially set to the 525 V tap and a 525–690 V unit
is set to the 690 V tap to insure that no overvoltage of
secondary equipment occurs if the tap is not changed
before power is applied. See Table 3.9 to set the proper
tap at terminal T1 located in the rectifier cabinet. For
location in the adjustable frequency drive, see figure of
rectifier in Figure 3.21.
Input Voltage Range [V] Tap to Select [V]
380–440 400
441–490 460
491–550 525
551–625 575
626–660 660
661–690 690
Table 3.9
NAMUR Terminals
NAMUR is an international association of automation
technology users in process industries, primarily in the
chemical and pharmaceutical industries, in Germany.
Selection of this option provides terminals organized and
labeled to the specifications of the NAMUR standard for
adjustable frequency drive input and output terminals. This
requires MCB 112 PTC Thermistor Card and MCB 113
Extended Relay Card.
RCD (Residual Current Device)
Uses the core balance method to monitor ground fault
currents in grounded and high-resistance grounded
systems (TN and TT systems in IEC terminology). There is a
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pre-warning (50% of main alarm setpoint) and a main
alarm setpoint. Associated with each setpoint is an SPDT
alarm relay for external use. Requires an external "window-
type" current transformer (supplied and installed by
customer).
•
Integrated into the adjustable frequency drive's
safe-stop circuit
•
IEC 60755 Type B device monitors AC, pulsed DC,
and pure DC ground fault currents
•
LED bar graph indicator of the ground fault
current level from 10–100% of the setpoint
•
Fault memory
•
TEST/RESET button
Insulation Resistance Monitor (IRM)
Monitors the insulation resistance in ungrounded systems
(IT systems in IEC terminology) between the system phase
conductors and ground. There is an ohmic pre-warning
and a main alarm setpoint for the insulation level.
Associated with each setpoint is an SPDT alarm relay for
external use.
NOTE!
Only one insulation resistance monitor can be connected
to each ungrounded (IT) system.
•
Integrated into the adjustable frequency drive's
safe-stop circuit
•
LCD display of the ohmic value of the insulation
resistance
•
Fault Memory
•
[Info], [Test], and [Reset] keys
Manual Motor Starters
Provide 3-phase power for electric blowers often required
for larger motors. Power for the starters is provided from
the load side of any supplied contactor, circuit breaker, or
disconnect switch. Power is fused before each motor
starter, and is off when the incoming power to the
adjustable frequency drive is off. Up to two starters are
allowed (one if a 30 A, fuse-protected circuit is ordered).
Integrated into the adjustable frequency drive's safe-stop
circuit.
Unit features include:
•
Operation switch (on/off)
•
Short-circuit and overload protection with test
function
•
Manual reset function
3-19
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