Danfoss VLT 5042, Руководство по эксплуатации

Страница: 30 / 123

VLT® 5000 Crane
Installation
Connection of shield:
No. Function
12, 13 Voltage supply to digital inputs.
For the 24 V DC to be usable
for the digital inputs, switch 4 on
the control card must be closed
position "ON".
Max. current 350 mA
16-33 Digital inputs
37 Digital inputs. Hardware coast
20 Ground for digital inputs
39 Ground for analogue/digital
outputs
26, 46 Digital outputs for output
functions (messages)
42, 45 Analogue outputs for indicating
frequency, reference, current and
torque
47, 49 Supply 5 V, 200 mA for
incremental encoder
50 Supply voltage to potentiometer
and thermistor 10 V DC.
Max. current 12 mA
53 Analogue reference input, voltage
0 - ±10 V
55 Ground for analogue reference
inputs
58, 60 Analogue reference input, current
0/4-20 mA
68, 69 RS 485 interface, serial
communication.
73, 78 Encoder input
■
Brake Connection
No. 81 82 Brake resistor
R- R+ terminals
The connection cable to the brake resistor must
be screened/armoured. Connect the screen to the
metal cabinet of the frequency converter and to
the metal cabinet of the brake resistor by means of
cable clamps. Dimension the cross-section of the
brake cable to match the brake torque.
NB!:
Please note that voltages up to 850 V DC
occur on the terminals.
■
Installation of Relay Terminals
Tightening-up torque: 0.22 - 0.25 Nm
Screw size: M3/M2
No. Function
1-3 Relay output, 1+3 NC, 1+2 NO See
parameter 323. See also
General
technical data.
4, 5 Relay output, 4+5 NO See parameter
326. See also
General technical
data.
■
Installation of Brake Resistor Temperature Switch
Torque: 0.5-0.6 Nm
Screw size: M3
No. Function
106, 104,
105 Brake resistor temperature switch.
NB!:
This function is only available on VLT
5072-5202 400-500 V.
If the temperature of the brake resistor gets too high and
the terminal switch drops out, the frequency converter
will stop braking. The motor will start coasting.
A terminal switch must be installed that can either be
‘normally closed ’ or ‘normally open ’ . If this function is
not used, 106 and 104 must be short-circuited together.
MG.50.N4.02 - VLT is a registered Danfoss trademark
29