55
OUTLINE DIMENSION DRAWINGS
<MT-BR5 type>
*1
Be sure to select the well-ventilated place for installation of the resistor unit.
Ventilation is necessary when installing the resistor in a place, e.g. enclosure, where heat is
not well diffused.
*2
The temperature rise of the resistor unit is 300deg. Therefore, wire the cable so as not to
touch the resistor. Also, separate a component, which is low in heat-resistant property, at
least 40 to 50cm from the resistors.
*3
The temperature of the resistor unit abnormally increases if the brake unit is operated
exceeding the specified duty. Since the resistor unit may result in overheat if the
temperature of the brake unit is left unchanged, switch off the inverter.
*4
The resistor unit is provided with a thermostat (a contact) as overheat protection. If this
protective device is activated under normal operation, it is assumed that the deceleration
time is too short. In such a case, increase the deceleration time setting of the inverter.
Resistor Unit Type
Resistance
Value
Approximate
Mass (kg)
200V
class
MT-BR5-55K
2.0
Ω
50
400V
class
MT-BR5-H75K
6.5
Ω
70
4 15 installation hole
300
75
75
450
7.5
7.5
M6
M4
193
189
480
510
85
85
800
37
60
21
10
40
30
NP
(Unit: mm)
Summary of Contents for FR-BU2-1.5K
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Page 64: ...MEMO...
