37
MD2TF 400 / MD2THF 330
Rth
P14
DC +
DC -
BR2
BR1
PE
BR3
BR4
230Vac
50/60Hz
P14
L1
H
P
P - 80
P + 60*
Ø13
L - 28
L
PARAMETER-SETTING INTERFACE AND OPTIONS
POWERDRIVE MD2CS Installation guide
4946 - 2017.12 / c
en
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 to 65A
51
52
860
890
480
690
66
RF-MD-37500-5
5
37.5
T
MD2TF400-37500
80 to 104A
100
87
960
1140
380
1150
77
RF-MD-55000-5
5
55
T
MD2TF400-55000
95 to 125A
100
105
960
1140
540
1150
105
RF-MD-75000-4
3.5
75
T
MD2TF400-75000
120 to 160A
145
146
1080
1260
680
1150
145
TH
MD2THF330-75000
120 to 160A
345
146
RF-MD-110000-3
2.35
110
T
MD2TF400-110000
160 to 220A
220
216
960
1140
740
1520
200
See §3.1.3
