Danfoss vlt aqua Instruction

4.5 Frame size F Panel Options
Space Heaters and Thermostat
Mounted on the cabinet interior of frame size F adjustable frequency drives, space heaters controlled via automatic thermostat help control humidity
inside the enclosure, extending the lifetime of 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 F 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 & Outlet and/or the Space Heaters & Thermostat are installed Transformer T1 requires it taps to be set to the proper input voltage.
A 380–480/500 V380–480 V drive will initially be set to the 525 V tap and a 525–690 V drive will be set to the 690 V tap to insure no overvoltage of
secondary equipment occurs if the tap is not changed prior to power being applied. See the table below to set the proper tap at terminal T1 located in
the rectifier cabinet. For location in the drive, see figure of rectifier in the
Power Connections section.
Input Voltage Range Tap to Select
380–440 V 400V
441–490 V 460V
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 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 termi-
nology). There is a 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 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 drive’s safe-stop circuit
• LCD display of the ohmic value of the insulation resistance
•Fault Memory
• INFO, TEST, and RESET buttons
IEC Emergency Stop with Pilz Safety Relay
Includes a redundant 4-wire emergency stop pushbutton mounted on the front of the enclosure and a Pilz relay that monitors it in conjunction with the
drive’s safe stop circuit and the line power contactor located in the options cabinet.
VLT AQUA Low Harmonic Drive Instruction
Manual
4 How to Install
MG.20.T1.22 - VLT
®
is a registered Danfoss trademark 4-31
4

Danfoss vlt aqua Specifications

General

Brand	Danfoss
Model	vlt aqua
Category	DC Drives
Language	English