Wheelock MT4-12-LS Anleitung zur Fehlerbehebung PDF herunterladen (Seite 32)

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4) Enter the calculated

subtotals of all listed

outputs then add to get

combined current.

COMBINED AUX. POWER, BELL AND RELAY OUTPUT Total Current

Standby Alarm

Aux. Power Output Subtotal

Bell Output Subtotal XXXXX

Aux. Relay Output Subtotal

Add all subtotals

(Cannot exceed 350mA max. standby; 1.0 amp max. alarm)

5) These values are fixed.

5110XM PCB CURRENT Total Current

Standby Alarm

Includes 2-wire smoke detector and LED indicator PCB currents 155mA 235mA

6) Enter the calculated

combined currents then

add to total PCB

current.

TOTAL CONTROL LOAD Total Current

Standby Alarm

Combined aux. power, bell and aux. relay output current

Total PCB current 155mA 235mA

Total power supply load*

* Limit the total power supply standby current to 210 mA when a 60 hr. standby time is

desired.

7) Using the total

calculated power supply

load (step 6), calculate

the battery capacity

required for the

installation.

BATTERY CAPACITY CALCULATION WORKSHEET

(For 24 or 60 hour standby followed by 5 minute fire alarm)

Capacity Formula Calc Value

Standby Capacity total standby load X 24 or 60 hours X 1.1 contingency

factor (use total standby load from previous worksheet)

Alarm Capacity total alarm load X 0.083 hours (5 minutes)

(use total alarm load from previous worksheet)

Total Capacity Add standby and alarm capacities (14AH max)

8) Using the battery

capacity from step 7,

select the appropriate

battery.

BATTERY SELECTION TABLE

7 AH Yuasa NP7-12

14 AH Yuasa NP7-12 (connect 2 in parallel, mounted

vertically in cabinet)

Making the Battery Connections

1. Use the battery capacity calculation worksheet(above) to determine the

appropriate battery for the installation.

Do not connect the batteries until all devices have been wired to the control.

2. Verify that the proper float charging voltage (13.5–13.8VDC) is present

across the battery terminals of the 5110XM PCB. If not, check that the

auxiliary power and auxiliary relay outputs are not loaded in excess of their

ratings.

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