Aiphone GH series operation manual Expanded System, External Relay Connection

4-4

Expanded System

1.Common trunk line: maximum of 2 trunk lines

2.Sub trunk line: maximum of 4 trunk lines

Maximum of 125 units (maximum of 48 units for standard system)

•The wiring of the sub trunk line is the same as the standard system. For details, see 4-1 to 4-3.

[1] Entrance Station

•Basic System #1 - #5

•Expanded System (#1 - #8) x 2 [2] Security guard station GH-MK

•Standard System #1, #2

•Expanded System (#1, #2) x 2

[3]Expanded video bus control unit GH-VBX

[4]Expanded bus control unit GH-BCX

[5]Bus control unit GH-BC

[6]Distribution terminal (junction): sold separately

[7]Power supply adapter PS-2410LC, PS-2410LD, PS-2410DIN

NP: Non-polarized

4-5

[1] [2]

GH-RY

[5]

[3]

[4]

B
	AC

[6]

[7]

External Relay Connection

[1]Input wire (blue)

[2]Input wire (white)

[3]Output wire (orange)

[4]Output wire (orange)

[5]Timer (sold separately)

[6]Buzzer

[7]Entrance light

•GH-RY contact specifications: AC/DC 24 V, 0.5 A ([3], [4])

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