The relay contacts are galvanically isolated from the rest of the circuit by reinforced isolation (PELV).
2) Overvoltage Category II.
3) UL applications 300 V AC 2A.
Control card, 10 V DC output
Terminal number
50
Output voltage
10.5 V
±
0.5 V
Maximum load
25 mA
The 10 V DC supply is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
Control characteristics
Resolution of output frequency at 0–590 Hz
±
0.003 Hz
Repeat accuracy of precise start/stop (terminals 18, 19)
≤±
0.1 ms
System response time (terminals 18, 19, 27, 29, 32, 33)
≤
10 ms
Speed control range (open loop)
1:100 of synchronous speed
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
Control card performance
Scan interval (VLT
®
HVAC Drive FC 102, VLT
®
Refrigeration Drive FC 103, VLT
®
AQUA
Drive FC 202)
5 ms (VLT
®
AutomationDrive FC 302)
Scan interval (FC 302)
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 protective earth. Use only an isolated laptop as PC connection to
the USB connector on the frequency converter.
Specifications
Design Guide
MG37N102
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Summary of Contents for VLT 380-500 V
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