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IMS-MN-LMDA42C_A.pdf
Appendix D:
LMD with Absolute Encoder
Overview
This appendix covers the multi-turn absolute encoder functions for LMD CANopen products.
The multi-turn absolute encoder holds and updates the position information regardless of the
powered on/off state of the LMD device.
The absolute position in memory is powered by an internal source for up to 30 days, or by an
external battery pack for up to five years.
Unboxing Procedure
When unboxing the product, the internal power storage should be considered to be in a
discharged state.
1. Connect DC power in accordance with “Electrical Installation” on page 47 of this
document.
2. Allow the unit to charge for a period of 24 hours. During this time programming and
commissioning of the unit may be performed.
3. The internal storage level my be queried via the communications or network interface.
4. If an application requires position retention of the LMD in an unpowered state for greater
than 30 days, an external Back-up Battery Pack (ICP0531) is required. This accessory will
extend the data retention and update time up to five (5) years for up to six (6) LMD absolute
encoder products.
Connection of the Multifunction Interface
Variance from Standard LMD Products
The pin configuration differs on LMD absolute encoder units as the analog input is replaced
with the input for the Encoder Back-Up Battery Pack (ICP0531).
–
P2A Pin 6: VBAT+
–
P2A Pin 7: VBAT-
These pins are used to connect the optional ICP0531 Encoder Back-up Battery Pack.
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