Speed control range (closed loop)
1:1000 of synchronous speed
Speed accuracy (open loop)
30-4000 rpm: error
±
8 rpm
Speed accuracy (closed loop), depending on resolution of feedback device
0-6000 rpm: error
±
0.15 rpm
All control characteristics are based on a 4-pole asynchronous motor
Environment
Enclosure
IP20
1)
/Type 1, IP21
2)
/Type 1, IP55/Type 12, IP66
Vibration test
1.0 g
Max. relative humidity
5% - 93% (IEC 721-3-3; Class 3K3 (non-condensing) during operation
Aggressive environment (IEC 60068-2-43) H
2
S test
class Kd
Ambient temperature
3)
Max. 50
°
C (24-hour average maximum 45
°
C)
1)
Only for
≤
3.7 kW (200-240 V),
≤
7.5 kW (400-480 V)
2)
As enclosure kit for
≤
3.7 kW (200-240 V),
≤
7.5 kW (400-480 V)
3)
Derating for high ambient temperature, see special conditions in the Design Guide
Minimum ambient temperature during full-scale operation
0
°
C
Minimum ambient temperature at reduced performance
- 10
°
C
Temperature during storage/transport
-25 to +65/70
°
C
Maximum altitude above sea level without derating
1000 m
Derating for high altitude, see special conditions in the Design Guide
EMC standards, Emission
EN 61800-3, EN 61000-6-3/4, EN 55011
EMC standards, Immunity
EN 61800-3, EN 61000-6-1/2,
EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6
See section on special conditions in the Design Guide.
Control card performance
Scan interval
1 ms
Control card, USB serial communication
USB standard
1.1 (Full speed)
USB plug
USB type B “device” plug
Connection to PC is carried out via a standard host/device USB cable.
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
The USB ground connection is not galvanically isolated from protection earth. Use only an isolated laptop as PC connection to
the USB connector on the frequency converter.
Protection and Features
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the heatsink ensures that the frequency converter trips if the temperature reaches a
predefined level. An overload temperature cannot be reset until the temperature of the heatsink is below the
values stated in the tables on the following pages (Guideline - these temperatures may vary for different power
sizes, frame sizes, enclosure ratings etc.).
•
The frequency converter is protected against short-circuits on motor terminals U, V, W.
•
If a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the frequency converter trips if the intermediate circuit
voltage is too low or too high.
•
The frequency converter constantly checks for critical levels of internal temperature, load current, high voltage on
the intermediate circuit and low motor speeds. As a response to a critical level, the frequency converter can adjust
the switching frequency and/ or change the switching pattern in order to ensure the performance of the
frequency converter.
Specifications
VLT
®
HVAC Drive Operating Instructions
MG11AI02 - VLT
®
is a registered Danfoss trademark
81
10
10
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: [email protected]
