4 cable protection, 5 cable length, Up i l a – R&M Materials Handling VARIABLE SPEED CONTROLS ControlMaster Plus Service Manual User Manual
Page 14: 6 du/dt filters
R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
14/83
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
Power class
002
003
004
005
007
011
015
018
022
Continuous current
I
CONT
A
6.5
8
10
13
18
24
32
42
48
Fuse
A
10
10
10
16
20
25
35
50
50
Max motor cable length
m
50
50
50
50
50
50
50
50
50
Ft
160
160
160
160
160
160
160
160
160
Motor cable
40
o
C
mm
2
1.5
2.5
2.5
2.5
4
6
10
10
10
104
o
F
AWG
14
14
14
12
10
10
8
8
6
Braking resistor cable
40
o
C
mm
2
2.5
2.5
2.5
2.5
2.5
2.5
2.5
4
4
104
o
F
AWG
14
14
14
14
14
14
14
12
12
Power class
030
037
045
055
Continuous current
I
CONT
A
60
75
90
110
Fuse
A
63
80
100
125
Max motor cable length
m
50
50
75
75
Ft
160
160
240
240
Motor cable
40
o
C
mm
2
16
25
35
35
104
o
F
AWG
6
4
2
2
Braking resistor cable
40
o
C
mm
2
10
10
16
16
104
o
F
AWG
8
8
6
6
1.11.4 Cable protection
To protect the supply cables against short circuit there must be fuses or motor circuit breakers (MCCBs) installed at the
mains end of the supply cable. Dimensioning of the fuses or MCCBs depends on the cable used and on the type of
primary fuses or MCCBs. If there are no other regulations, the values given in this section can be used to dimension
fuses (three phase 400V supply).
The overload protection of inverter protects both the supply and the motor cables. The fuses of the supply provide the
short circuit protection.
1.11.5 Cable length
The maximum motor cable lengths in the preceding table are based on 150% of inverter rated current (=current during
acceleration) and a 2.5 % voltage drop in the cable. For longer cables, the required conductor cross sectional area A
(mm2) is given by formula
U
p
I
l
A
F
Ч
Ч
Ч
Ч
=
5
.
1
43
.
2
where l
is the cable length (m)
I
F
is the motor current (A) at shaft power P
F
p
is the allowed voltage drop in %
U
is the nominal motor voltage
1.11.6 Du/dt filters
If inverter is not mounted on the crane, there has to be du/dt filter at motor supply. Also if total motor cable length (sum of
motor cables ) is over 100m with 002 –005 or over 200m with 007 –055, there has to be du/dt filter at motor supply.
Power class
Platthaus du/dt filter
Length (mm)
Width (mm)
Height (mm)
Weight (kg)
ID
002 – 003
ULC-910-920
100
110
180
1.2
52306553
004 – 005
ULC-914-931
125
110
200
3
52306554
007 – 018
ULC-918-951
155
125
225
7
52306555
022 – 045
ULC-923-927
190
135
260
12
52306556
055
ULC-942-1044
240
175
310
22
52306557
m
Du/dt filter should be as near inverter as possible
m
Note! All control cables must be placed as far from the motor and braking resistor
cables as possible.