Bellcall Digital Door Entry System
PD-083 Issue 3A
Installation and Operating Manual
Page 28 of 46
Lock Release Problems
TEST:
Press ‘
Test’
Button on Door
Controller (when system idle):
Confirm ‘LOCK’ LED illuminates for 3 seconds.
Check Output Voltage at LOCK terminals.
Lock release does not operate
Try shorting exit terminals,
remove wiring first
Confirm ‘LOCK’ LED changes state for the ‘lock time’.
N.B. LED goes ON for fail secure, OFF for fail safe.
Check the output voltage at LOCK terminals.
Connections to lock release are open or shorted.
Voltage drop due to insufficient cable capacity.
Lock current is too high; Power supply is resetting.
Power supply drop too high, cable or distance limits to
controller exceeded.
Maglock or Solenoid bolt not suppressed will cause
failures or damage.
Lock operates from the exit
button but not the test button
or phone.
Normally closed switch has been used for exit button.
Lock release operates all the
time or in reverse
Check fail safe/fail secure selection matches the lock
type.
Check that the exit button is not normally closed.
Lock release does not operate
or clicks but does not open.
Connections to Lock Release are open or shorted.
Voltage drop due to cable too thin.
Lock current is too high; Power supply is resetting.
Lock release jammed due to over tight fitting.
Maglock does not hold
strongly.
Voltage drop due to cable too thin.
