Digiplex DGP-848 - 42 - Programming Guide
Power Unit Consumption
1. Using Table 3, calculate the total number of power units (PU) required by each device, module, and accessory in the
system. Please take into account devices connected to the control panel’s PGM outputs. Since the
BELL output has its
own power supply, do not include the sirens connected to it in the calculation.
2.
If the Grand Total is less than 700PU, go to step 3. If the value is greater, you will require an external power supply (see
External Power Supply on page 44
) to provide the additional power needed. Proceed with step 3.
3. Due to the degradation of a power signal over long distances, EACH length or run of wire in the system can support only
a specific number of power units (PU). Using Table 4, determine how many power units each length of wire can support.
Please note that the total number of power units (PU) can never surpass 700PU.
Table 3: Power Unit Consumption Table
Description QTY. PU used by each Total PU
Grafica Graphic LCD Keypads (DNE-K07): _______ X 130PU = __________ PU
LCD Keypads (DGP2-641): _______ X 60PU = __________ PU
LED Keypads (DGP2-648): _______ X 45PU = __________ PU
Motion Detector Modules (DGP2-50/60/70): _______ X 16PU = __________ PU
Door Contact Modules (DGP2-ZC1): _______ X 14PU = __________ PU
1-Zone Expansion Modules (DGP2-ZX1): _______ X 15PU = __________ PU
4-Zone Expansion Modules (APR3-ZX4): _______ X 20PU = __________ PU
8-Zone Expansion Modules (APR3-ZX8): _______ X 40PU = __________ PU
Omnia Wireless Expansion Modules (OMN-RCV3): _______ X 50PU = __________ PU
1-PGM Expansion Modules (APR3-PGM1): _______ X 50PU = __________ PU
4-PGM Expansion Modules (APR3-PGM4): _______ X 150PU = __________ PU
Printer Modules (APR3-PRT1): _______ X 40PU = __________ PU
DVACS Module (DGP2-DVAC): _______ X 40PU = __________ PU
InTouch Voice-Assisted Arm/Disarm Modules (APR3-ADM2): _______ X 70PU = __________ PU
Access Control Module (DGP2-ACM1P):
Note: The DGP2-ACM1P consumes 165PU from its own power supply.
_______ X 165PU = __________ PU
Other devices such as hardwired motion detectors (1mA = 1PU) __________ PU
Maximum available power units = 700PU GRAND TOTAL __________ PU
Table 4: Power Unit (PU) Limitations For Each Run of Wire
Gauge: 18AWG Surface: 0.823mm
2
Gauge: 22AWG Surface: 0.326mm
2
Gauge: 24AWG Surface: 0.205mm
2
Length of each
run of wire
Available Power
Units (PU)
Length of each
run of wire
Available Power
Units (PU)
Length of each
run of wire
Available Power
Units (PU)
100ft. (30m) 700 100ft. (30m) 700 100ft. (30m) 700
200ft. (61m) 700 200ft. (61m) 682 200ft. (61m) 429
300ft. (91m) 700 300ft. (91m) 454 300ft. (91m) 286
400ft. (122m) 700 400ft. (122m) 341 400ft. (122m) 214
500ft. (152m) 690 500ft. (152m) 273 500ft. (152m) 171
600ft. (183m) 575 600ft. (183m) 227 600ft. (183m) 143
700ft. (213m) 493 700ft. (213m) 195
800ft. (244m) 431 800ft. (244m) 170
900ft. (274m) 383 900ft. (274m) 151
1000ft. (305m) 345 1000ft. (305m) 136
1500ft. (457m) 230
2000ft. (610m) 172
2500ft. (762m) 138
3000ft. (914m) 115