Lighting Controls Blue Box LT Series Installation, Operation & Maintenance Manual page 61

THE BLUE BOX LT HARDWARE TROUBLESHOOTING
HARDWARE TROUBLESHOOTING (Continued)
• If not fixed, this is a bad smacker strip; contact LC&D
for a replacement .
. . . I f the relay is in Timer Mode:
• Go to "Manual Override Screen . "
• The status indicator on the screen will have an
extra leg, if the relay is in timer mode .
• If not in relay timer mode, the relay may be in a
Maintain + Timer or Maintain + Blink Group
• Find out if and which Group controls that relay .
• Go to the "What and When" menu or refer to the
system Bus file .
• If the relay is not supposed to be on a Maintain +
Timer or Maintain + Blink Group, remove it from
Group .
. . . I f the relay(s) are chattering it may be caused by insuf-
ficient voltage driving the relay:
• Check for any loose connections with the relay
jumpers or the ribbon cable .
• Unplug, and then plug the relay jumper cable back .
SMACkER STRIP TROUBLESHOOTING
If relays do not turn ON or OFF and the relay trouble-
shooting procedure does not help resolve a relay related
issue, follow the steps below:
1 . Check the voltage between the smacker strip relay
driver pins (24V and Gnd) for the relay in question:
For Normally Closed Relays
If 24V and LED on relay button is OFF
For Normally Open Relays
If 24V and LED on relay button is ON
2 . If correct voltage is present, connect a different relay
to the driver pins and exercise relay – listen for a
clicking sound .
3 . If 24 V ac is not present on the pins, check other pins
for voltage . If no relay driver has 24 V ac, disconnect
power cable at the bottom of the strip and recon-
nect . Measure voltage on each driver pin . If no voltage
is present, refer to the transformer troubleshooting
procedure .
4 . If voltage is present on all pins except for the one that
controls the relay in question, relay driver is bad and
smacker strip will need to be replaced .
5 . If voltage is present on all pins, transformer is supply-
ing correct voltage on the secondary side, and power
to smacker strip has been reset, disconnect the con-
trol card power cable, then disconnect smacker strip
power cable, and then the relay jumper . Reconnect
control card power cable first, then smacker strip
power cable, and finally the relay jumper . Exercise re-
lay and listen for clicking sound . Repeat Step 2 . If relay
does not respond, replace smacker strip .
6 . If replacing the Smacker Strip does not work, the prob-
lem lies on the card; contact LC&D for a replacement .
CONTROL CARD TROUBLESHOOTING
Check to see if the "Online" LED is ON .
If "Online" LED is ON (blinking or solid):
1 . Navigate to the "Read Address" screen . Read the address .
2 . Screen should display either an address or a "0" address .
3 . If the screen displays an address:
Use the "Scan by Serial Number" screen, to check if any
address collisions exist with another device on the bus .
If collision exists, re-address card to an unassigned address
and define it in the "Bus Map" .
If no collision exists, but the card was already assigned to an
address in a previous location (where it was causing a collision
with another device) on the bus map, eliminate device from
bus map and define the correct device on that address .
4 . If the screen display's a "0"
Address the card through the "AUTO-ADDRESSING"
screen and define it in the "Bus Map" screen .
If unable to read address:
1 . Remove the control card from the bus (disconnect
all Cat . 5 ),
• Connect directly to the master control card with
a LAN tested cable
• Read the address of the card through the read
address screen
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