Danfoss VLT HVAC Drive FC 100 Series, Руководство по конструкции

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3.1.11.3 Electrical Wiring
MCB 114
Sensor Input Option B
SW. ver. xx.xx Code No. 130B1272
VDD I IN GND
TEMP
1
WIRE
1 GND TEMP
2
WIRE
2
GND TEMP
3
WIRE
3
GND
X48/ 1 2 3 4 5 6 7 8 9 10 11 12
4-20mA
2 or 3
wire
2 or 3
wire
2 or 3
wire
2 or 3
wire
1
3
0
BB3
2
6
.1
0
Figure 3.12
Terminal Name Function
1 VDD 24V DC to supply 4–
20mA sensor
2 I in 4–20mA input
3 GND Analog input GND
4, 7, 10 Temp 1, 2, 3 Temperature input
5, 8, 11 Wire 1, 2, 3 Third wire input if three
wire sensors are used
6, 9, 12 GND Temp. input GND
Table 3.10
3.1.12 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 increases 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 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
Table 3.11 to set the
proper tap at terminal T1 located in the rectifier cabinet.
Input voltage range Tap to select
380–440 V 400V
441–490 V 460V
491–550 V 525V
551–625 V 575V
626–660 V 660V
661–690 V 690V
Table 3.11 Transformer Tap Set-up
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 terminology). 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 adjustable frequency drive
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
VLT
®
HVAC Drive Selection VLT
®
HVAC Drive Design Guide
MG11BB22 - VLT
®
is a registered Danfoss trademark 3-11
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