XTL-HL
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The XTL-HL accessory by Copley Controls weighs 0.57 kg and supports XTL devices with an RS-232 port with RXD, TXD, and GND signals. It's part of their Copley Controls Accessories and is compatible with XTL units featuring digital control loops for current, velocity, and position. The device provides the low-profile heat sink for XTL devices with the Canopen Protocol DSP-402.
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Product Description:
The XTL-HL is a special Copley Control accessory that can be separately bought for Xenus devices by Copley Controls. As a small accessory, it functions as a low-profile heat sink, providing an escape path for the generated heat of the digital servo drive. Compared to the standard XTL-HS heatsink, the XTL-HL is smaller and more compact in construction. Whereas the XTL-HS heatsink weighs around 1.9 pounds or 0.86 kilograms, the XTL-HS only weighs 1.26 pounds or 0.57 kilograms. Heatsinks are usually attached as separate components to modules and electrical devices to improve heat dissipation. They are commonly interfaced to these electrical devices to provide a larger surface area for heat flow.
As a compact heatsink, the XTL-HL features fewer fins than the standard XTL-HS unit. While this means that the XTL-HL can facilitate heat dissipation slower than the standard HS unit, it provides for a more flexible installation. Aside from improving thermal dissipation of the digital drive, low-profile heatsinks such as the XTL-HL also increases the permissible continuous current. Since the continuous current of the XTL drive is also limited by the maximum drive operating temperature, having a heatsink component effectively increases the maximum continuous current for the drive.
As an example, when the XTL-HL heatsink is used with the XTL-230-18 at 120 V, the continuous current could go as high as 6 amperes at 55 degrees Celsius. Without the XTL-HL, the mentioned drive can only maintain a maximum continuous current of 4 A at the same operating conditions. The XTL-HL comes with a dry-film interface that simplifies installation. Instead of incorporating a thermal grease, the dry-film interface serves as the contact surface for the drive and the heatsink.
Frequently Asked Questions about XTL-HL:
Q: Which side of the XTL-HL‘s dry-film interface should face the drive?
A: The dry film interface for the XTL-HL comes with a clear protective sheet and a blue protective sheet. The surface protected by the blue sheet should face the drive.
Q: How many mounting screws are needed for the XTL-HL?
A: During mounting, all four screws must be used for the XTL-HL to ensure efficient and even heat distribution.
Q: What type of mounting screws are needed for the XTL-HL?
A: Four #6-32 mounting screws are needed to fully mount the XTL-HL to the XTL drive.
Q: How much torque is needed to fully mount the XTL-HL?
A: Each mounting screw of the XTL-HL should be torqued to 8 to 10 lb-in.
Q: How does the XTL-HL affect the XTL-230-36’s performance?
A: Without the XTL-HL accessory, the XTL-230-36 drive can safely transmit a continuous current of 3 amperes at 55 degrees Celsius. At the same temperature and with the HL heatsink, the same drive can operate at a maximum continuous current of 5 amperes.
