2: MODULE SPECIFICATIONS
« FC4A MICROSMART USER’S MANUAL » 2-67
Clock Cartridge
With the optional clock cartridge installed on any type of MicroSmart CPU modules, the MicroSmart can be used for
time-scheduled control such as illumination and air conditioners. For setting the calendar/clock, see page 15-5.
Clock Cartridge Type Number
Clock Cartridge Specifications
The optional memory cartridge (FC4A-PM32) and the clock cartridge cannot be used together on the all-in-one type CPU
module. The memory cartridge and the clock cartridge can be used together on the slim type CPU module.
Installing and Removing the Clock Cartridge
All-in-One Type CPU Module
The cartridge connector is normally closed with a
dummy cartridge. To install the clock cartridge, open
the terminal cover and remove the dummy cartridge
from the CPU module. Make sure of correct orienta-
tion of the clock cartridge. Insert the clock cartridge
into the cartridge connector until it bottoms. Do not
insert the clock cartridge diagonally, otherwise the
terminal pins will be deformed. After installing the
clock cartridge, close the terminal cover.
To remove the clock cartridge, hold both edges of the
clock cartridge and pull it out.
Slim Type CPU Module
To install the clock cartridge, open the hinged lid and
remove the dummy cartridge from the CPU module.
Make sure of correct orientation of the clock car-
tridge, and insert the clock cartridge into cartridge
connector 1 or 2 until it bottoms. After installing the
clock cartridge, close the hinged lid.
Only one clock cartridge can be installed to either
cartridge connector 1 or 2 on the slim type CPU
module. A clock cartridge and a memory cartridge
can be installed at the same time.
To remove the clock cartridge, hold both edges of the
clock cartridge and pull it out.
Module Name Type No.
Clock Cartridge FC4A-PT1
Accuracy ±30 sec/month (typical) at 25°C
Backup Duration Approx. 30 days (typical) at 25°C after backup battery fully charged
Battery Lithium secondary batter y
Charging Time Approx. 10 hours for charging from 0% to 90% of full charge
Battery Life Approx. 100 recharge cycles after discharging down to 10% of full charge
Replaceability Not possible to replace batter y
module. Otherwise, the clock cartridge or CPU module may be damaged, or the MicroSmart may
internal elements.
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