Securitron iMXDa_iEXDa_CH INSTALLATION - Manual (Page 8)

P/N 500-22155
Page 8 Rev. A, 11/12
6. SYSTEM OPERATIONS
General Description of Operation
The iMXDa secures an opening using a model 62 Magnalock within the unit housing. At an
attempt to exit, the SB-MXD sex bolt permits the door to move within a 1” limit while remaining
secure. Door movement distance (or gap) for an alarm is set by “training” the unit’s
microprocessor to trigger at a desired distance. Whenever this programmed door movement is
detected, the unit will initiate an alarm. During this alarm sequence, there is a release delay
where the local alarm inside the housing sounds and a remote alarm contact activates. At the
end of the alarm sequence, the lock releases, the local alarm stops but the external alarm
contact remains active. The unit remains in the released state until it is either manually or
automatically relocked (reset). Reset must be accomplished manually by the momentary turn of
the Integrated Reset/Bypass (IRB) key switch or can be performed through a remote input.
Further explanation of the alarm and relocking functions is covered in this section.
THE iMXDa PROGRAMMABLE DOOR GAP SENSING RANGE MAY BE SET BETWEEN
1/8” [3.2mm] AND 1” [25.4mm] (This feature is not available on the Chicago version)
THE STANDARD iMXDa IS FACTORY SET TO A 1/2” DEFAULT GAP DISTANCE
SPECIAL UNITS ARE AVAILABLE WITH SMALLER GAP MOVEMENT REQUIREMENTS
Power On Reset (This feature is not available on the California version)
Power on reset is a start up function that is initiated whenever power is applied to the iMXDa
unit. At power up the iMXDa locking system performs the following self diagnostics:
 Validates program version.
 Reads DIP switch settings.
 Verifies door position.
 Confirms lock status secure.
 Initiates standard operational mode.
Component Layout
Figure 10 shows the general layout and position of the PC board in the wire access
compartment.
Figure 10 Figure 11
Integrated Reset/Bypass (IRB) Key Switch
The iMXDa/iEXDa incorporates a mortise lock cylinder and cam accessible from the bottom of the
lock housing shown in Figures 10 and 11. This Integrated Reset/Bypass (IRB) key switch is
required for gap adjustment, and activation of the reset and bypass functions. The furnished
cylinder is replaceable with a variety of commercial cylinder/cam combinations. See Appendix
C for details.
(Key Access)
Mode Selection
Switch Mortise Cylinder
and Cam
Cover Tamper Switch
(Optional Accessory)
DIP
Switches
Terminal Block
Header Connector
Tamper Switch
Connector
Door Movement
(Gap) Sensor
Magnalock
Connector
Tamper Status &
Door Status Switch
Jumpers (JP1 and JP2)
iMXDa/iEXDa
Jumper (JP3)