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LNL-2220 Intelligent Dual Reader Controller
Wire should be of sufficient gauge to avoid voltage loss.
•
Diode Selection: Diode current rating: 1x strike current. Diode breakdown voltage 4x strike voltage.
For 12 VDC or 24 VDC strike, diode 1N4002 (100V/1A) typical.
•
MOV Selection: Clamp voltage: 1.5x VAC RMS. For 24 VAC strike, Panasonic ERZC07DK470
typical.
29.5.1
Power and Alarm Inputs
The LNL-2220 requires 12-24 VDC power. Locate power source as close to the unit as possible. Connect
power with minimum of 18 AWG wire.
Note:
Connect the GND signal to earth ground in ONE LOCATION within the system! Multiple
earth ground connections may cause ground loop problems and is not advised.
Observe POLARITY on 12-24 VDC input!
There are two dedicated inputs for cabinet tamper and UPS fault monitoring. Normal (safe) condition is a
closed contact. If these inputs are not used, install a jumper wire.
158 —
revision 7
– +
TB10 or TB11
NC
C
NO
NC
C
NO
TB10 or TB11
NC
C
NO
NC
C
NO
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