RUN NOW Excite +: Technical Service guide - rev. 6.2
Page 3.28
The two signals are handled at the same time:
• The EMERGENCY signal generated: is sent to the LK to immediately block it, while the HK
only reads the status of the LK.
To restore operation of the equipment, the user must press any key on the KEYBOARD or on the
Touch Screen.
Pressing a key causes the Driver unlocking procedure to start, and the Driver receives the reset
signal from the Main Board (HK). Following this, the Driver performs the reset procedure. If the
serial communication cannot be successfully established, the equipment will make several attempts
to reset. Every failed connection attempt is recorded in the COM FAULT parameter which can be
displayed as indicated in the paragraph regarding the Service menu. After about 30 seconds it will
interrupt and display the error message on the Display.
3.25.2.2. The signals involved
The following signals are involved in the control:
• HK: (Pin 15 on CN17).
Emergency 1 signal (With ADAPTER cable):
• LK – ALE-MET (Pin 9 on J3);
• LK – ALEWin ( Pin 9 on J3).
RS-485 signal: is a digital signal exchanged by HK and LK.
• LK: (Pin 1-5 on J3)
• HK: (Pin 5-13 on CN17)
RESET Signal: This is the signal generated by HK, sent to the LK to signal restoring of normal
status after an emergency condition. This signal is 0 VDC in normal conditions and becomes 12
VDC for a few seconds when the user presses a key:
• LK: (Pin 10 su J3);
• HK: (Pin 7 su CN17).
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