ARDAC WACS-2 Specification and Adjustment Manual
44X477 Rev. 8
05/ 16/ 03 3-7
Operational Notes - Chassis
Like the cassette stacker, the chassis is an electronically passive device. Its main function is to provide
alignment and a mounting shell for the acceptor and cassette inside the host. The acceptor and cassette
should smoothly slide into the chassis, and easily lock into position. If the acceptor or cassette requires
excessive force to engage the latches, the acceptor, cassette, or chassis may be bent or damaged.
Sensors in the chassis detect the presence of the cassette stacker, and also when the stacker punch is the
home position. The “Stacker Present” sensor is a normally closed mechanical switch. When the stacker is
fully seated, this switch is set to the open position.
The “Stacker Home” sensor is an LED-photo sensor pair. One element of this pair is mounted on either side
of the chassis, in the lower inside rear corners of the chassis. When the stacker punch moves out of the
home position, the photo sensor sees the LED through access holes in the sides of the stacker cassette.
When the stacker punch is in the home position, the punch plate mechanism breaks the light beam between
the LED and photo sensor.
If the optional Smart function is installed, there is a read-only memory device installed in the chassis that
stores a unique electronic serial number for that chassis.
Operational Notes - System Power-up Sequence
The power-up sequence takes approximately 10 to 15 seconds. The System should not be disturbed until
the sequence is completed. During this sequence, the System firmware checks the note path, calibrates the
sensors, checks for stacker present, and checks the DIP switch settings. The stacker punch cycles once at
the beginning and once at the end of the power-up sequence.
NOTE:
Wait until the power up sequence ends before inserting notes.
The second cycling of the stacker punch marks the end of the power up sequence.
Before Applying Power To The System
1. If possible, check that there are no notes in the acceptor’s note path. In some cases this may not be possible.
For example: When power is momentarily lost to the host equipment, and then restored. To address these
cases, the acceptor firmware includes routines to automatically clear the note path and reset the stacker.
These are explained below.
2. For proper completion of the Power-up Sequence, the stacker cassette must be fully installed and locked
into position before the System is powered up.