CDMA X Current Loading Worksheet

CDMA-X Communicator – Current Loading Worksheet
GENERAL INFORMATION:

Before installing this product, first ensure the system's control panel has enough
available power. The best method is to assess all the ECP devices and figure the total
current draw. Then subtract that from the control panel's maximum aux power
current. This will give you the available power for the CDMA-X.
Follow the simple procedure below to determine if an auxiliary power supply is needed.
Step 1 provides some reference information covering the maximum available aux
current for popular control panels. If your control panel is not listed here, please refer
to its installation guide.

STEP 1 – Determine the Control Panel's Available Power.
Control Panel

Maximum Aux Power

VISTA-10P

500mA

VISTA-15P

600mA, or 500mA for UL

VISTA-20P

600mA, or 500mA for UL

VISTA-32FB

1.0A

VISTA-128BP / 250BP

750mA (390mA Canada)

VISTA-128FBP / 250FBP

1.0A (650mA Canada)

VISTA-128BPT / 250BPT

750ma

VISTA-128FBPT / 250FBPT

1.0A (650mA Canada)

The CDMA-X Communicator requires
12VDC @ 40mA standby, 300mA max.

For control panels that do not have enough available power, you must add an aux power supply
such as the Honeywell AD12612 Auxiliary Power
Supply, 1361 Transformer, and 12V 4Ah backup
battery.

STEP 2 – Determine the total power for all ECP Devices.
System Devices

Current Draw

Note: When using an auxiliary power supply,
ensure the negative output of the auxiliary
power supply is also connected to the negative
Aux Power terminal in the control panel. (Refer
to the wiring diagram on the reverse side.)

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Total Current Draw for all ECP Devices

STEP 3 – Does the Control Panel need an Aux Power Supply?
YES

Install the CDMA-X.

Subtract the:
Total Current Draw for all ECP Devices
from the
Control Panel's Available Power

Is the available power
greater than
200mA ?

NO

Install an Aux
Power Supply for
the CDMA-X.

Using an Auxiliary Power Supply to power the CDMA-X Communicator.
Refer to the Auxiliary Power Supply AD12612 instructions for terminal information.

CDMA-X
Communicator

BLACK

YELLOW
Vista Control Panel

GREEN

+
–

1361
Transformer

RED
ECP
Cable
(supplied)

DC OUTPUT

AD12612
Auxiliary Power Supply

AC
AC

DATA OUT
DATA IN
AUX Pwr –

BLACK
BLK

RED

–

Ë

4AH
Battery

2 Corporate Center Drive, Suite 100
P.O. Box 9040, Melville, NY 11747

Ê800-18821;Š
800-18821 4/15 Rev. A

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