Securitron DSB_Series - Manual (Page 12)

PN# 500-22700
Page 11 Rev. F, 03/11
Figure 16
This product was designed for use with Securitron Magnalocks. The Magnalock secures the door
with magnetic force only and therefore has no possibility of jamming and thereby denying
egress. The Magnalock also has internal electronics which allow it to release very rapidly. When
used with the DSB, which is also a fast device, exit is immediate and the impression a person
exiting gets is that the door is not locked at all. Other magnetic locks generally operate
significantly more slowly than the Magnalock.
9. APPENDICES
A. TROUBLESHOOTING
PROBLEM - The door will not release when the bar is touched.
Monitoring the touch sense operation of the bar can be done by viewing the red LED on the main
PC board next to the potentiometer (when the end mount cover is removed), which will
illuminate when the bar is touched. If there is no click or illuminated LED, try actuating the
mechanical movement of the bar. If the door does not release from the mechanical actuation, it
is almost certain that the overall wiring of the installation is at fault. If the door releases from
the mechanical actuation, the general wiring is probably correct but the touch sensor is not
reading touch. See Section 8.3 on how to adjust sensitivity. Another problem could be that
the touch sensor itself is not receiving 12-24 Volts DC power on the red and black wires.
Inspect the power supply and ensure that the input polarity is correct. If power is being applied
on the red and black wires it is still possible that power may not be getting to the sensor.
Inspect the connector that plugs into the main PC board to ensure that it is fully engaged and
check for loose wires. Finally, verify that the ring terminal that connects the sensor to the bar
has not come loose.
If the red LED does illuminate when you touch the bar and the door does not release, try to
mechanically actuate the door. If the door still does not release, the problem must be in the
lock/system installation wiring as it is nearly impossible to have a failed touch sensor relay and
mechanical switching circuit at the same time. Please review the wiring to make sure that the
DSB is correctly applied in the circuit. If the LED illuminates but only the mechanical function
releases the door, call the factory as the defect appears to be in the relay contacts and the main
PC board will have to be replaced.
PROBLEM - The door remains released constantly.
If there is LED indication when the bar is touched but the lock remains released, the problem is
probably in the system wiring which should be reviewed to be sure the DSB is correctly applied
in the circuit. If there is no LED indication, the touch sensor is probably adjusted too high
(review Section 8.3). Rotate the adjustment pot counter-clockwise while not touching the bar.
If this does not lock the door, some effect is probably keeping the relay in the de-energized
state all the time. (Remember, the relay is normally energized when the lock is secure to
maintain fail safe operation).
 The most likely cause for the relay to remain energized is that the sensor "sees" an
overwhelmingly large signal as if someone was continually touching the bar. This will happen
if the bar is not properly isolated from a metal door.