System status - led indicators, System status - lcd display – Johnson Systems DPC-24-3000 Series Digital Pack Controller User Manual
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System Status - LED Indicators
RUN (Green)
Illuminates when the power is on and the microcontroller status is in normal run mode. The LED
flashes once every 2 seconds when the system is in STANDBY mode.
ØA, ØB and ØC (Green)
Illuminates when the line voltage for each phase is within the acceptable range of 100VAC to
130VAC for 120VAC operation and 200VAC to 260VAC for 240VAC operation, and the zero-cross
reference circuitry is functioning properly. The LED will flash slowly (once per second) when an
under-voltage is sensed - less than 100VAC for 120VAC operation, and less than 200VAC for
240VAC operation. The LED will flash quickly (twice per second) when an over-voltage is sensed
- greater than 130VAC for 120VAC operation, and greater than 260VAC for 240VAC operation.
DMX-A (Yellow)
Illuminates when valid DMX is received on the DMX-A input. Flashes when invalid DMX is
received.
DMX-B (Yellow)
Illuminates when valid DMX is received on the DMX-B input. Flashes when invalid DMX is
received.
FAN
Illuminates when a blown (open) fan fuse is sensed. A blown (open) fuse suggests the fan may
be defective and needs to be replaced (Johnson System Inc., Part Number: CF-CD80P). Replace
the fuse with a 2A, 250V, fast-acting, GMA type fuse only!
O/T
Illuminates and flashes twice per second when an over-temperature is sensed via the OEM
thermostat, mounted on the heat-sink inside the CD80 dimmer pack. The thermostat closes
when an over-temperature condition of 180°F ±7°F (82°C ±4°C) is reached. All dimmer outputs
are disabled and the fan is turned on to full until the thermostat temperature drops to within
specification.
System Status - LCD Display
When DMX is being received, the top line of the LCD display shows the DMX-A start address
(“DMXA:001” to “DMXA:512”). When DMX is not being received, the top line of the LCD display
shows “DPC-12” or “DPC-24”, unless the system is in standby mode, then “STANDBY!” is
displayed.
The bottom line of the LCD display shows the current status of the system unless the system
configuration menu items are being accessed. Below are descriptions for each status indication.
NO RX!
Displayed when DMX is not being received on either input and the system is not in scene mode.
AXXXBXXX
Displayed when valid DMX is being received on one or both inputs and both inputs are not
terminated. “A” and “B” represent the DMX-A and DMX-B inputs while “XXX” represents the
number of channels being received in each packet of data. For example, if the system is receiving
512 channels on DMX-B and DMX-A is disconnected, the display will show “A000B512”.