Equipment Description 2-1
Revision 2 - 20 March, 1997 HP SERIES DIMMER OPERATING MANUAL
11. LOAD LED: This red LED serves two functions. In normal operation, it acts as
an output mimic. When the channel drive is at zero, it indicates whether that channel’s
load is disconnected (or open-circuit).
To check a load, set the channel drive to zero. The LOAD LED will turn ON if there
is no load.
For levels above zero, the LOAD LED will mimic the channel output whenever a load
is connected.
Note that the channel circuit breaker must be ON for the LOAD LED circuitry to
work.
BREAKER LOAD CHANNEL DRIVE LOAD LED STATUS
on not connected off ON
on connected off OFF
on connected on OUTPUT MIMIC
off doesn’t matter doesn’t matter OFF
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