2.2 Mechanical Installation
YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
41
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Table 2.12 Parameter Settings
Figure 2.5
Figure 2.5 Output of Heatsink Plate Temperature by Analog Output
Note: 1.
Accuracy of the temperature reading between 50ºC and 100ºC may vary
±
5ºC.
2.
The heatsink temperature is affected by the ambient temperature. Never exceed the allowable maximum heatsink plate temperature.
■
Drive Overheat Alarm (oH)
Set L8-02 to have the drive output an alarm when the heatsink plate exceeds a specified temperature.
L8-03 determines the action taken by the drive when an oH alarm is triggered. Refer to the T1000V Technical Manual for
more details.
◆
Selecting an External Heatsink (Finless Drive)
■
Data Required for Heatsink Selection
shows the data needed to select a heatsink suitable for the drive and application.
Table 2.13 Data Required for Heatsink Selection
No.
Name
Description
H4-01
Analog Output Terminal AM Function Selection
00408
(heatsink plate temperature)
H4-02
Analog Output Terminal AM Gain
100.0%
H4-03
Analog Output Terminal AM Bias
0.0%
Symbol
Description
P
Loss
Drive heat loss
Refer to Drive Watt Loss Data on page 313
to check the amount of heat loss from the heatsink plate of the drive.
T
HSP_max
Maximum heatsink plate temperature
This is the temperature at the surface of the heatsink plate. It can be monitored with U4-08. The maximum allowable value
depends on drive model.
CIMR-TCBV
, CIMR-TC2V0001 to 0020, CIMR-TC4V0001 to 0011: 90ºC
CIMR-TC2V0030 to 0069, CIMR-TC4V0018 to 0038: 80ºC
T
Amb
External heatsink ambient temperature (air temperature around heatsink)
R
θ
HSP
Heatsink plate thermal resistance
This value is 0.05 K/W
R
θ
HSP-EHS
Thermal resistance between the heatsink plate and the external heatsink.
Calculated as
A
th
Heat transfer area between drive heatsink plate and external heatsink.
Note: Due to uneven heat generation across the heatsink plate (by arrangement of internal components) the effective area for heat
transfer is lower than 70% of the heatsink plate area. This must be considered when calculating the thermal resistance.
Refer to
for values of H and W to calculate the area of the heatsink plate.
λ
Comp
Thermal conductivity of the heatsink thermal compound
d
Comp
Thickness of the thermal compound
R
θ
EHS
Thermal resistance of the external heatsink
0
Output Voltage
㧔
V
㧕
10.0
9.0
5.0
90
50
100
Temperature
（
°C
）
R
θ
HSP-EHS
=
d
Comp
λ
comp
A
th
