Daktronics AB-1600-1.5,2.5 User Manual
Page 34
Electrical Installation
3-14
Connecting the Data Distributor to the Fan Controller Enclosure
In displays with a data distributor, the fan control enclosure must connect to the fan controller
expander card in the data distributor. Figure 37 shows a close-up view of a fan controller
expander card in the data distributor. Multiple fan controllers can interconnect together. Refer to
the System Riser Diagram in Appendix A or the System Overview Manual, if present, for
details.
3.11
Display Continuity Check
Prior to turning on the power to the display, perform a continuity check to ensure that no short circuits
have occurred due to shipping vibration.
Caution: Before performing the following steps, be sure all the breakers are off!
1. Remove the cover from the panelboard.
2. Using an ohmmeter, place one probe on the neutral terminal and one probe to each of the taps on
the breaker wire terminal. Repeat the same test for each of the breakers.
3. Place one probe to earth ground and one to each of the breaker wire terminals and repeat for each
of the breakers.
All tests should result in a reading of infinity or indicate an open circuit.
0
P
-1
1
9
0
-0
1
5
0
S
N
:
3
4
5
6
0
7
-6
4
-9
7
R
E
V
.
4
15HC1
15HC1
REV. 1
15HC1251LP
CHIPTECH
006-HC-007
15
H
C
1
15
H
C
1
15
H
C
1
15
H
C
1
1
5H
C
1
1
5H
C
1
1
5
H
C
1
1
5
H
C
1
1
5
H
C
1
REV. 1
15HC1251LP
CHIPTECH
006-HC-007
1
5H
C
1
15H
C
1
15
H
C
1
15H
C
1
15
H
C
1
15
H
C
1
1
5
H
C
1
1
5
H
C
1
1
5
H
C
1
0
P
-1
1
9
0
-0
1
5
0
S
N
:
3
4
5
6
0
7
-6
4
-9
7
R
E
V
.
4
0
P
-1
1
9
0
-0
1
5
0
S
N
:
3
4
5
6
0
7
-6
4
-9
7
R
E
V
.
4
1
5
H
C
1
1
5
H
C
1
1
5
H
C
1
1
5
H
C
1
1
5
H
C
1
L
IN
E
L
O
A
D
Corcom
20VB1
F-5757
6876-986
SN:985-8587
MADE
IN
MEXICO
UR
567-575
P-8678
0
P
-1
1
9
0
-0
1
5
0
S
N
:
3
4
5
6
0
7
-6
4
-9
7
R
E
V
.
4
Data Distributor
Fan Controller
Expander Card
15HC1
15HC1
15HC1
15HC1
15HC1
15HC1
LOAD
Corcom
MADE
IN
MEXICO
0P-1
190-0150
SN:
3456
07-64-97
REV
.4
Circuit Board
Label
J2 Thermostat
Input
J4 Thermostat
Input
J5 Thermostat
Input
Power LED
J6 Output
J1 Fans
J1 Power Input
J3 Thermostat
Input
Figure 37: Close-up of the Fan Controller Expander Card in the Data Distributor.