
B–65192EN/02
6. HEAT GENERATION
33
CAUTION
Cooling by forced air flow uses a air flow speed of 2 m/s
measured at the heat sink. Servo amplifier unit A06B–6089
–H106 or A06B–6090–H008 has a standard built–in cooling
fan.
(4) Heat generated by the regenerative discharge resistor
· The regenerative discharge resistor built in servo amplifier
A06B–6089–H101/H102 or A06B–6090–H002/H003 cannot be
placed outside the cabinet because of its structure.
Therefore, the amount of heat generated in the resistor must be added
to the total heat generated in the cabinet. See Section 4.2 for
descriptions of the heat generated by the regenerative discharge
resistor.
· The regenerative discharge resistor built in a servo amplifier other than
A06B–6089–H101/H102 or A06B–6090–H002/H003 can be placed
outside the cabinet by putting its heatsink out of the cabinet. In this
case, it is unnecessary to add the heat generated by the regenerative
discharge resistor to the total heat generated in the cabinet.
· If a separate regenerative discharge resistor unit is placed outside the
cabinet, it is unnecessary to add the heat generated by the regenerative
discharge resistor to the total heat generated in the cabinet.
· If the heat sink of a servo amplifier unit or a separate regenerative
discharge resistor unit is in the cabinet, it is necessary to add the heat
generated by the regenerative discharge resistor to the total heat
generated in the cabinet. See Section 4.2 for descriptions of the heat
generated by the regenerative discharge resistor.
Table 6 (a) Total heat generation of each servo amplifier
amplifier model
Total heat generation
(W) : a
Heat generation in the
cabinet (W) : b
SVU1–12, 20
SVUC1–4, 12
20.6 20.6
SVU1–40, 80
SVUC1–40, 80
26.1 26.1
SVU1–130
SVUC1–130
59.3 37.3
All SVU2 models
All SVUC2 models
29.8 29.8