ELK-PD9 INSTALLATION INSTRUCTIONS
1.
To remove the cover from the Power Distribution Module (ELK-PD9), use a small object like a screw driver to press into the
slots located on the end of the cover. Insure that the power switch is off.
2.
Using Table 1 or Table 2 below, select an A.C. or D.C. Power Source that provides enough current to power the number of
devices to be used. The Power Source voltage must also match the device's voltage requirements.
Mount the Power Distribution Module near the Power Source that will be used to power the devices.
3.
Connect the Power Source to the Power Distribution Module via the Input Power Terminals or the 2.1mm DC jack(J1) located
to the right of the terminals.
4.
Connect a two conductor cable from the Power Distribution Module's Output terminals to the devices to be powered. If desired,
the total current draw can be measured at the Master Power Switch using an Ammeter while the switch is off. (figure 2)
5.
Turn the Master Power Switch on, ensure all leds are on.
6
Replace the plastic cover on the Power Distribution Module.
ELK-PD9
POW
E
R DI
ST
RI
BUT
IO
N
9 O
U
TP
U
T
S
PTC
LED
LED
LED
LED
LED
LED
LED
LED
LED
PO
S
24V
A
C
o
r
24V
D
C
o
r
12V
D
C
NE
G
PTC
PTC
PTC
PTC
PTC
PTC
PTC
PTC
PO
S
N
EG
PO
S
PO
WER
1
NE
G
P
O
S
NE
G
PO
WER
3
PO
WER
2
PO
S
N
EG
PO
S
PO
WER
4
NE
G
P
O
S
PO
WER
6
PO
WER
5
PO
S
N
EG
PO
S
PO
WER
7
NE
G
P
O
S
PO
WER
9
PO
WER
8
NE
G
N
E
G
SW1
J1
CENTER
PIN +
OFF
ON
-
+
CONNECT INPUT
POWER HERE
12 or 24 VOLTS
AC or DC
(30 VOLTS MAX)*
IF DESIRED, USE A CURRENT
METER TO TEST THE TOTAL
CURRENT DRAW AT THESE TEST
POINTS LOCATED ON SW1 LEADS
TURN SW1 OFF BEFORE
MEASURING
* THE INPUT POWER SOURCE
CURRENT MUST BE RATED
FOR THE TOTAL OUTPUT
CURRENT NEEDED
INPUT
POWER ON
LED
OPTIONAL
:
12 VOLT DC
PLUG-IN
POWER
SUPPLY
(ELK-T1216)
CONNECT DEVICES TO BE
POWERED TO THESE
TERMINALS
Observe Polarity
if using DC Voltage
* THE INPUT POWER SOURCE
VOLTAGE MUST MATCH THE
DEVICE'S OPERATING
VOLTAGE SPECIFICATIONS
Figure 2: Power Distribution Module(ELK-PD9)
ELK-624
ELK-P1216
ELK-624
12 VDC
12 VDC
24 VDC
1 A
1.5A
.8A
12
18
19
5
7
4
10
15
8
13
20
10
Model #
Voltage
Output
Amps
VA / Watts
Table 2: Quick Power Supply Selection by Number of Devices
Select a column that closely approximates the power consumption of each device. For the
desired voltage, select the row that meets or exceeds the number of desired devices. The
appropriate Power Supply Model # is shown at left. NOTE: If a device consumes more than the
max. rating of a single PD9 output (250 mA), then parallel two or more outputs together to
achieve the desired capacity. Use additional PD-9's for every 9 devices or as required.
@200mA
(2.4W)
@100mA
(1.2W)
@75mA
(.9W)
Max. Available Power
6
10
5
@150mA
(1.8W)
8
12
6
@125mA
(1.5W)
5
8
4
@175mA
(2.1W)
@200mA
(4.8W)
@100mA
(2.4W)
@75mA
(1.8W)
@150mA
(3.6W)
@125mA
(3W)
@175mA
(4.2W)
4
6
3
@225mA
(2.7W)
@225mA
(5.4W)
Table 1: Sizing the Power Supply
Calculate the total combined power consumption of all
devices. Select a Power Supply which has a Max.
Available Power capacity that meets or exceeds the
calculated total.
Model #
Voltage
Output
Current
VA / Watts
Max. Available Power
ELK-T2440
Transformer
24 VAC
1.7A
40
8
17
21
10
12
9
7
