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iTDC Quick Installation Guide
Mar.11.2010
3.7 OUTPUT WIRING
Door Lock or Alarm Device can be connected to Output Port terminal block (Relay outputs) of iTDC/iTDC-SR.
Connect input devices as follows.
3.7.1
DOOR LOCK WIRING
POWER FAIL SAFE DOOR LOCK WIRING;
- C12V wire of DC12V power supply to Output Port terminal block (RCOM1) of iTDC/iTDC-SR.
- Connect (+) wire of Door Lock to Output Port terminal block (RNC1) of iTDC/iTDC-SR.
- Connect (-) wire of Door Lock to GND(-) wire of DC12V power supply.
- Must connect an anti-inverse voltage diode between (+) wire and (-) wire of Door Lock. [IMPORTANT]
(Figure: Power Fail Safe Door Lock Wiring)
Connect an anti-inverse voltage diode as shown above when wiring Door Lock or Alarm. If you
don’t an anti-inverse voltage diode, external noise flows in then it causes some malfunctions such
as poor communication, unintended changes in system setting etc. Also if you connect the
polarity of diode oppositely, the product can be damaged. So, must connect it in the correct
direction. 1N4004 – 1N4007 or equivalent diode are included in the gift box. When you install
automatic door, install an additional 24V relay between the product and a door lock.
Caution
Diode
