How To Check Connection Of Control Cables; Prefuses; Check Grounding - Danfoss VLT 2000 Series Manual

How to check connection of control cables

The VLT frequency converter must be connected so
that it is possible to control it via the different signal
inputs at the top of the enclosure.
Terminals 01-03: Relay output
Terminal 12: Supply to digital inputs
Terminals 18-19: Digital inputs
27-29
Terminal 46: Digital output signal (open collector)
Terminal 50: Supply to 1 kohm potentiometer
Terminal 53 Analogue control voltage
Terminal 60: Analogue control current
Terminals 71/72: RS 232 standard bus
Terminals 81/82: Used in connection with brake resistor
Terminal 20: Digital common
Terminal 55: Analogue common

Prefuses

Prefuses must be installed in the mains supply to the
frequency converter.
(Max. sizes) (Max. sizes)
(Max. sizes) (Max. sizes) (Max. sizes)
Mains supply 1/3 x 208/220/230/240 V
2010 2015 2020 2030 2040 2050
10 A 16 A 20 A 20 A 20 A 25 A
Cables
The cables to control signals and brake resistor must
be screened. It is recommended to use unscreened
motor cable.
Motor/mains cables (max. cable cross-section)
Mains supply 1/ 3 x 208/220/230/240 V
2010 2015 2020 2030 2040 2050
4 mm 2 for all VLT 2000 Series types
Control cables (max. cable cross-section)
Mains supply 1/ 3 x 208//220/230/240 V
2010 2015 2020 2030 2040 2050
2
1.5 mm for all VLT 2000 Series types
*) VLT 2060: Max. 415V
How to check the grounding
The grounded line must be connected to terminal 94
(PE). If you use a thick cable this must be connected
to the 6 mm large screw (terminal 95) in the bottom of
the VLT frequency converter.
MG.20.B6.02 – VLT is a registered Danfoss trademark
VLT ® 2000 Series
Max. 250 V, max. 2 A. Relay: Not activated
24 V DC, max. 140 mA
0-24 V, R =2 kohm (max. 37 V for 10 sec.)
i
(min. on-time 80 ms.)
Max. 24 V DC, max. 40 mA, min. 600 ohm
10 V DC, max. 12 mA
+0 - 10 V DC, R
0/4-20 mA, R
71 RXD, 72 TXD, 20 dig. ref.
Must be used as reference for all digital
signals
Must be used as reference for all analogue
signals.
Mains supply 3 x 380-460 V
2020 2025 2030 2040 2050 2060*
16 A 16 A 16 A 16 A 16 A 20 A
If you use screened cables, the screen must be con-
nected to the screen termination bracket of the VLT
frequency converter and brake resistor.
Mains supply 3 x 380-460 V
2020 2025 2030 2040 2050 2060*
4 mm 2 for all VLT 2000 Series types
Mains supply 3 x 380-460 V
2020 2025 2030 2040 2050 2060*
2
1.5 mm for all VLT 2000 Series types
=10 kohm, +10 - 0 V
i
=226 ohm, 20-0/4 mA
i
17