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
