Moniteq CRYPTO-LOCK CC-8521AN Instruction Manual page 14

of K1. Capacitor C3 provides additional
"in-rush" current immediately after K1
closes to assure activation of the solenoids
in larger, heavy-duty electric locks. K1 is
controlled by an input from the Logic
Board on T1, pin 2 (RELAY-). When
OUTPUT MODE switch S1 is in the
LIMIT HOLDING CURRENT position the
output current is limited to approximately
300mA after capacitor C3 discharges. This
serves to prevent overheating and possible
damage to solenoid-operated locks that
otherwise could not be maintained open for
long periods of time.
Regulator Q3 provides 13.5Vdc at up to
2A to relay K1 when the OUTPUT
SOURCE switch is set to INT 12V.
Regulator Q4 provides operating voltage
for circuits on both the Power Supply
Board and through T1, pin 4, to the Logic
Board.
Regulator Q5 provides operating voltage
for the battery monitoring circuits of U1
and U2. U1:A compares the battery
voltage (T2, pin 6) with a reference voltage
to determine the battery charge level.
When the level falls below that of the
reference the output of U1: A trigger timer
U2, causing L2 to flash and beeper B1 to
sound approximately every 30 seconds.
The annunciator control signal from the
Logic Board enters through T1, pin 6 and
is coupled directly to the external
annunciator through T2, pin 16.
Terminals T3 and T4 are provided to
allow wiring the power transformer
primary winding for either 115VAC or
230VAC. Refer to Figure 3 for correct
wiring of T3 and T4.
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