TDK-Lambda 802 Series - Remote Control Sequence

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83488001 Revision N
6.2.13. Load Fault LED
Pin 18. Open collector Active Low output indicating a load fault condition. Load fault
is a non-latching fault and will self-reset after approximately 500ms (for models
without LP option). Load fault is caused by an output overvoltage condition (110% of
rated voltage) or an output short circuit/large capacitor (load charges for 500ms
without reaching programmed voltage). Max rated voltage - 60V, 100Ω series
resistance.
6.2.14. Summary Fault LED
Pin 19. Open collector Active Low output indicating a summary fault condition.
Summary fault is a logical OR of Overvoltage, Overtemp, AC Line, and Open Interlock
conditions. Summary Fault is also indicated by both HV ON and HV OFF
LEDs/indicators being illuminated at the same time. Max rated voltage - 60V, 100Ω
series resistance.
6.2.15. Not Inhibit Input
Pin 20. Logical Inverse of Inhibit input (Pin 7), 0V Inhibits unit, 15V or open allows
operation. User should control supply with either the Inhibit or Not Inhibit signal, both
signals should not be used together. Input impedance >10kΩ.
6.2.16. Vprogram
Pin 22. 0-10V Analog Input = 0-100% of rated output voltage (0-5V if 5V option is
installed). Input impedance >1MΩ.
6.2.17. HV Off LED
Pin 23. Open collector Active Low output indicating HV output is off/disabled. Max
rated voltage - 60V, 100Ω series resistance.
6.2.18. Ground
Pin 24. Control circuit return. Also chassis/earth ground.
6.2.19 +12V unfiltered. Pin 25, +12V unfiltered.
6.3. Remote Control Sequence
Note
The logic levels in the description below are for a supply without EN option. If EN
is installed the logic levels for HV ON/OFF should be reversed.
Before operating either an 802L, S, or OEM in remote mode it must first be connected to a
master supply, or an appropriate external control system. To operate a model 802L in remote
mode the front panel keyswitch must be in the REMOTE position.
It is suggested that the INHIBIT signal is used in addition to the HV ON/OFF signal to control
the output current of the power supply during the normal charge/discharge cycle. The
INHIBIT signal should be asserted (Pin 7=5-15V) prior to activating the HV ON signal. Do not
connect the INHIBIT BNC and the Inhibit signal on the remote interface, only the remote
interface should be used in remote mode.
Once HV ON has been set (Pin 8=15V), then INHIBIT can be removed (Pin 7=0V), and the
supply will begin charging the load. A few tens of microseconds before the load switch is