Samsung SSA-S2000W user manual Bypass Diode Connection

installation and external connection

BYPASS DIODE CONNECTION

If you connected an inductor (door locks or alarm device) to the output relay, there should occur a voltage surge while the inductor is turning on and off. If you do not connect a reverse diode to the relay, the surge voltage will cause damage to the electric circuit of the controller. To reduce this surge, it is recommended to connect a reverse diode between the devices.

X	Y	Z
[	\	]
^	_	`
lzj	W	lu{
iŒ““
		zzhTzYWWW

I/O CONNECTION

DC+

DC-

Lock/Alarm

Cathode Anode

1N4004 ~ 1N4007 or equiv.

Input Connection

X Y Z

[ \ ]

^ _ `

lzj W lu{

iŒ““

zzhTzYWWW

Door Contact Sensor

Exit Button

Door Contact Sensor: Green with red stripes, GND

Exit Button: Orange line, GND

Black-
Red+	DC + 12V

Power Supply

PUSH

1.Connect the DC 12V(+) of the power supply unit to the red line.

2.Connect the GND(-) of the power supply unit to the black line.

- Exit Button Connection

1.Connect one line of the Exit button to the orange line.

2.Connect the other line of the Exit button to GND.

- Door Contact Sensor Connection

1.Connect one line of the door contact sensor to the yellow with red stripes.

2.Connect the other line of the door contact sensor to GND.

-Auxiliary Input Device Connection (AUX 1 (green), AUX 2 (green with white stripes), AUX 3 (green with red stripes)

1.Connect one line of the external input device to AUX 1, AUX 2, or AUX 3.

2.Connect the other line of the external input device to GND(-).

12_ Installation and External Connection