opto engineering LTDVE8CH-20, Instruction Manual

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LTDVE8CH-20 – INSTRUCTION MANUAL
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Bit 0: set if supply for the power stages is missing, reset if supply is present
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Bit 1: set if excessive temperature on LD1 and LD2 output stages, reset if safe temperature

Bit 2: set if excessive temperature on LD3 and LD4 output stages, reset if safe temperature
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Bit 3: set if excessive temperature on LD5 and LD6 output stages, reset if safe temperature

Bit 4: set if excessive temperature on LD7 and LD8 output stages, reset if safe temperature

Bit 5: set if LD1 output stage has been disabled, reset if LD1 output stage is active

Bit 6: set if LD2 output stage has been disabled, reset if LD2 output stage is active

Bit 7: set if LD3 output stage has been disabled, reset if LD3 output stage is active
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Bit 8: set if LD4 output stage has been disabled, reset if LD4 output stage is active
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Bit 9: set if LD5 output stage has been disabled, reset if LD5 output stage is active
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Bit 10: set if LD6 output stage has been disabled, reset if LD6 output stage is active
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Bit 11: set if LD7 output stage has been disabled, reset if LD7 output stage is active
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Bit 12: set if LD8 output stage has been disabled, reset if LD8 output stage is active
When any of the four thermal sensors on the output stages reports an excessive temperature, the
relevant error bit (1, 2, 3, or 4) is set and the relevant couple of output stages is shut down. This
happens when the temperature goes above about 90 °C. The same couple of output stages is then
reactivated when the temperature goes below about 80 °C.
When a hardware problem is detected on any of the eight output channels, the relevant error bit (5, 6,
7, 8, 9, 10, 11, 12 or 13) is set and the relevant output stage is permanently disabled. The error
condition may be reset by cycling the power supply off and on or by issuing a reboot command to the
controller (see
chapter 13.2.45 more information).
When the supply of the power stages is missing, the ERR LED is lit with a stable red colour. When
an over temperature condition or a hardware problem is detected the ERR LED is lit with a blinking
red colour.
Synchronization outputs SH1, SH2, SH3, SH4, SH5, SH6, SH7 and SH8 are never disabled.
Bit field [15:13] of this register is unused.
14.2.47. Registers CALIB_CUR_ADD[0:7]
These registers contain calibration constants for measurement of light output currents.

CALIB_CUR_ADD0 : calibration constant for measurement of light output LD1 current

CALIB_CUR_ADD1 : calibration constant for measurement of light output LD2 current
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CALIB_CUR_ADD2 : calibration constant for measurement of light output LD3 current
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CALIB_CUR_ADD3 : calibration constant for measurement of light output LD4 current
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CALIB_CUR_ADD4 : calibration constant for measurement of light output LD5 current

CALIB_CUR_ADD5 : calibration constant for measurement of light output LD6 current
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CALIB_CUR_ADD6 : calibration constant for measurement of light output LD7 current

CALIB_CUR_ADD7 : calibration constant for measurement of light output LD8 current