OR
Figure 12-26: Molex 22-11-2022
Figure 12-27: AMP 3-794632-2 & AMP 794617-2
Many commercially available absolute encoders require
a modest amount of battery power in order to retain their counters when the
PreciseFlex Controller is powered down. If a user's system is equipped with
this type of encoder, a suitable battery source must be connected to one
of the two encoder battery connectors. A two-pin Molex connector
is provided for backwards compatibility. Alternately, an AMP two plug
Mate-N-Lok connector provides a more secure means of connecting an external
battery. From an electrical point of view, the two connectors are identical
and have the same pin outs.
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Figure 12-26: Molex 22-11-2022 |
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Figure 12-27: AMP 3-794632-2 & AMP 794617-2 |
On the HVCPU board, the battery power flows from the input battery connectors to pins on the encoder connectors. See the reference pages for the HVCPU Board Encoder Interfaces for additional information. Also, refer to the specific information for the encoder for the recommended battery voltage and capacity.
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| Electrical Burn | |
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The cell used in this device may present a risk of fire or chemical burn hazard if mistreated. Do not, disassemble, heat above 100°C (212°F), or incinerate. Replace cell with Brooks part number G3X1-EC-X0007 only. Use of another cell may present a risk of fire or explosion. |
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NOTE: Due to the low voltage of batteries and the very low current drain of encoders in standby mode, a poor or higher resistance connection between the battery and the encoder can result in a momentary loss of power to the encoder. Even a very short loss of power can result in an absolute encoder losing its calibration data and signaling a low battery voltage error. Therefore, all connectors from the battery, through the controller and out to the encoder must be gold plated with high compression forces and all wires must have very low resistance.