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LEROY-SOMER
4946 - 2013.07 / a
POWERDRIVE MD2CS
41
MD2TF 400 / MD2THF 330
Rth
P14
DC +
DC -
BR+
BR-
PE
TH+
TH-
230Vac
50/60Hz
P14
L1
H
P
P - 80
P + 60*
Ø13
L - 28
L
en
InstallatIon and maIntenance
Chassis-mounted variable speed drive
PaRameteR-settInG InteRFace and oPtIons
5.6.2 - Braking resistors
• Before installing a braking resistor, make sure
that its presence does not constitute a fire hazard.
• A braking resistor must be mounted outside the
cabinet, as close as possible. Ensure that it is built into
an earthed ventilated metal case, to avoid any direct
contact.
• The braking resistor must be wired in series with a
thermal relay calibrated to the resistor rms current. When
the relay trips, the drive must immediately stop and be
disconnected from the mains supply.
• Specific information warning of the presence of high
temperature must be affixed to the resistor.
• The installation of the braking resistor must not
damage neighbouring components with its heat
dissipation.
• Dimensions
* becomes P + 80 from
RF-md-37500-5 upwards
Protection: IP13
Braking resistor characteristics:
type
electrical characteristics
dimensions (mm)
Weight
(kg)
Resist.
value
(Ω)
thermal
power
(kW)
Rating
Braking transistor kit
thermal
relay
Peak
power
(kW)
rms
current
(a)
l
l1
d
H
RF-md-27500-10
10
27,5
t
md2tF400-27500
48 à 65a
51
52
860
890
480
690
66
RF-md-37500-5
5
37,5
t
md2tF400-37500
80 à 104a
100
87
960
1140
380
1150
77
RF-md-55000-5
5
55
t
md2tF400-55000
95 à 125a
100
105
960
1140
540
1150
105
RF-md-75000-4
3,5
75
t
md2tF400-75000
120 à 160a
145
146
1080
1260
680
1150
145
tH
md2tHF330-75000
120 à 160a
345
146
RF-md-110000-3
2,35
110
t
md2tF400-110000
160 à 220a
220
216
960
1140
740
1520
200