5.3 UL Standards
204 YASKAWA SIEPC71061753C GA500 Technical Manual
2 : Fast Stop
The drive stops the motor in the deceleration time set in C1-09 [Fast Stop Time]. The output terminal set for Fault
[H2-01 to H2-03 = E] activates.
◆ Conditions of Acceptability
Machines and devices integrated with finless-type drives must satisfy the following conditions for compliance
with UL standards:
Note:
Obey the installation conditions specified in this guide to take full advantage of finless-type drives. It is not necessary for drives other
than finless-type drives to satisfy the following conditions.
1. Install finless-type drives into a ventilated enclosure with a minimum enclosure volume shown in Table 5.22.
Table 5.22 Minimum Enclosure Volume
Model
Minimum Volume
cm
3
(in
3
)
B001 - B006
2001 - 2012
9850
(600)
B010 - B012
2018 - 2042
4001 - 4023
15750
(960)
2056 - 2070
4031, 4038
42000
(2560)
2. Keep the ambient temperature lower than 35 °C (95 °F) in your application.
3. Keep the drive heatsink plate temperature lower than the maximum temperature shown in Table 5.23 in your
application.
Use U4-08 [Heatsink Temperature] to monitor the drive heatsink temperature.
Table 5.23 Maximum Temperature of the Heatsink Plate
Model Maximum Temperature of the Heatsink Plate
B001 - B012 90 °C (194 °F)
2001 - 2021 90 °C (194 °F)
2030 - 2070 80 °C (176 °F)
4001 - 4012 90 °C (194 °F)
4018 - 4038 80 °C (176 °F)
4. Make sure that the metal surface to which you will install the drive meets these specifications:
• Flatness: ≤ 0.2 mm (0.0078 in)
• Roughness: ≤ 25 S
5. Make sure that there is sufficient space for wiring and airflow to cool the drive.
• 30 mm (1.18 in) minimum from each side
• 100 mm (3.94 in) minimum from top and bottom
6. The recommended thermal compound is X-23-7795 from Shin-Etsu Chemical Co., Ltd., or equivalent. Apply
100 μm to 250 μm of thermal compound over the full heatsink plate of the drive.
7. Use the correct screws to safety the drive to a metal surface (enclosure panel). Table 5.24 shows the screw
sizes and tightening torques.
Monitor the temperature of the external heatsink at the top center of the junction between the external
heatsink and the drive.
Table 5.24 Screw Sizes and Tightening Torques
Drive Model Screw Size
Tightening Torque
N∙m (lbf∙in)
B001 - B012 M5
2.0 - 2.5
(17.7 - 22.1)
2001 - 2021 M5
2.0 - 2.5
(17.7 - 22.1)
2030 - 2056 M5
2.0 - 2.5
(17.7 - 22.1)
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