90 AFP-200 Instruction PN 15511:F2 10/11/99
Figure C-4 ACS and LDM Series EIA-485 Connection
T
B
6
TB2
TB2
Install 120 ohm terminat-
ing resistor on last
annunciator
• Connections are power-limited and supervised.
• A maximum of 10 devices may be connected to this circuit (ACM, LDM, AFM, etc.).
• 6,000 feet is the maximum recommended distance (16 AWG) between the control panel and the furthest
annunciator.
• Use twisted-pair cable with a characteristic impedance of approximately 120 ohms.
• The EIA-485 circuit is rated 5.5 VDC max., 60 mA max.
• Refer to the ACS Manual and the LDM Manual for additional information.
• Set SW2 on the control panel to the “ACS” position.
TB5-1 (+)
TB5-2 ()
ACS and LDM Series EIA-485 Connections
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