VLT
®
4000 VT
Maximum voltage on input ........................................................................................................................ 28 V DC
Input resistance, R
i
........................................................................................................................... approx. 2 k
Scanning time per input ............................................................................................................................. 3 msec.
Reliable galvanic isolation: All digital inputs are galvanically isolated from the supply voltage (PELV). In
addition, the digital inputs can be isolated from the other terminals on the control card by connecting
an external 24 V DC supply and opening switch 4. See switches 1-4.
VLT 4006-4072 VT, 525-600 V, do not meet PELV requirements.
Control card, analog inputs:
No. of programmable analog voltage inputs/thermistor inputs .............................................................................. 2
Terminal nos. ................................................................................................................................................ 53, 54
Voltage level .......................................................................................................................... 0 - 10 V DC (scalable)
Input resistance, R
i
.......................................................................................................................... approx. 10k
No. of programmable analog current inputs .......................................................................................................... 1
Terminal no. ground ............................................................................................................................................ 55
Current range ...................................................................................................................... 0/4 - 20 mA (scalable)
Input resistance, R
i
......................................................................................................................... approx. 200
Resolution .......................................................................................................................................... 10 bit + sign
Accuracy on input .......................................................................................................... Max. error 1% of full scale
Scanning time per input ............................................................................................................................. 3 msec.
Reliable galvanic isolation: All analog inputs are galvanically isolated from the supply voltage
(PELV) and other high-voltage terminals.
VLT 4006-4072 VT, 525-600 V, do not meet PELV requirements.
Control card, pulse input:
No. of programmable pulse inputs ........................................................................................................................ 3
Terminal nos. .......................................................................................................................................... 17, 29, 33
Max. frequency on terminal 17 ...................................................................................................................... 5 kHz
Max. frequency on terminals 29, 33 ............................................................................ 20 kHz (PNP open collector)
Max. frequency on terminals 29, 33 ........................................................................................... 65 kHz (Push-pull)
Voltage level ........................................................................................................... 0-24 V DC (PNP positive logics)
Voltage level, logic "0" .............................................................................................................................. < 5 V DC
Voltage level, logic "1" ............................................................................................................................ > 10 V DC
Maximum voltage on input ........................................................................................................................ 28 V DC
Input resistance, R
i
........................................................................................................................... approx. 2 k
Scanning time per input ............................................................................................................................. 3 msec.
Resolution .......................................................................................................................................... 10 bit + sign
Accuracy (100-1 kHz), terminals 17, 29, 33 ............................................................... Max. error: 0.5% of full scale
Accuracy (1-5 kHz), terminal 17 ................................................................................. Max. error: 0.1% of full scale
Accuracy (1-65 kHz), terminals 29, 33 ....................................................................... Max. error: 0.1% of full scale
Reliable galvanic isolation: All pulse inputs are galvanically isolated from the supply voltage (PELV). In
addition, pulse inputs can be isolated from the other terminals on the control card by connecting an
external 24 V DC supply and opening switch 4. See switches 1-4.
VLT 4006-4072 VT, 525-600 V, do not meet PELV requirements.
Control card, digital/pulse and analog outputs:
No. of programmable digital and analog outputs ................................................................................................. 2
Terminal nos. ................................................................................................................................................ 42, 45
Voltage level at digital/pulse output ...................................................................................................... 0 - 24 V DC
Minimum load to frame (terminal 39) at digital/pulse output .......................................................................... 600
MG.40.A7.22 - VLT is a registered Danfoss trademark
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