Danfoss VLT Series Design Manual page 64

3. VLT HVAC Selection
Resolution of output frequency
1) Terminal 27 and 29 can also be programmed as input.
The digital output is galvanically isolated from the supply voltage (PELV) and other high-voltage
terminals.
3
Control card, 24 V DC output:
Terminal number
Max. load
The 24 V DC supply is galvanically isolated from the supply voltage (PELV), but has the same
potential as the analog and digital inputs and outputs.
Relay outputs:
Programmable relay outputs
Relay 01 Terminal number
Max. terminal load (AC-1)
Max. terminal load (AC-15)
Max. terminal load (DC-1)
Max. terminal load (DC-13)
Relay 02 Terminal number
Max. terminal load (AC-1)
Max. terminal load (AC-15)
Max. terminal load (DC-1)
Max. terminal load (DC-13)
Max. terminal load (AC-1)
Max. terminal load (AC-15)
Max. terminal load (DC-1)
Max. terminal load (DC-13)
Min. terminal load on 1-3 (NC), 1-2 (NO), 4-6 (NC), 4-5 (NO)
Environment according to EN 60664-1
1) IEC 60947 part 4 and 5
The relay contacts are galvanically isolated from the rest of the circuit by reinforced isolation
(PELV).
Control card, 10 V DC output:
Terminal number
Output voltage
Max. load
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 0-1000 Hz
System response time (terminals 18, 19, 27, 29, 32, 33)
Speed control range (open-loop)
Speed accuracy (open-loop)
All control characteristics are based on a 4-pole asynchronous motor
64
1)
on 1-3 (NC), 1-2 (NO) (Resistive load)
1) (Inductive load @ cosφ 0.4)
1) on 1-2 (NO), 1-3 (NC) (Resistive load)
1)
(Inductive load)
1)
on 4-5 (NO) (Resistive load)
1)
on 4-5 (NO) (Inductive load @ cosφ 0.4)
1) on 4-5 (NO) (Resistive load)
1)
on 4-5 (NO) (Inductive load)
1)
on 4-6 (NC) (Resistive load)
1) on 4-6 (NC) (Inductive load @ cosφ 0.4)
1) on 4-6 (NC) (Resistive load)
1)
on 4-6 (NC) (Inductive load)
overvoltage category III/pollution degree 2
MG.11.B4.22 - VLT ® is a registered Danfoss trademark.
VLT ® HVAC Drive Design Guide
1-3 (break), 1-2 (make)
240 V AC, 2 A
240 V AC, 0.2 A
60 V DC, 1 A
24 V DC, 0.1 A
4-6 (break), 4-5 (make)
240 V AC, 2 A
240 V AC, 0.2 A
80 V DC, 2 A
24 V DC, 0.1 A
240 V AC, 2 A
240 V AC, 0.2 A
50 V DC, 2 A
24 V DC, 0.1 A
24 V DC 10 mA, 24 V AC 20 mA
10.5 V ±0.5 V
: +/- 0.003 Hz
1:100 of synchronous speed
30-4000 rpm: Maximum error of ±8 rpm
12 bit
12, 13
: 200 mA
2
50
25 mA
: ≤ 2 ms