System 5000 Systems: ACM-16AT and ACM-32A Only
PN 15842:K 7/23/2002 77
Note: “System Trouble” and “Module Failure” will also occur if the normally
closed supervisory path between TB1 Terminals 6 and 7 on the annunciator is
opened (or the jumper has not been installed).
The EIA-485 circuit that drives the ACS must be connected to the control panel
as in the accompanying illustration.
• Power-limited and supervised.
• 6,000 feet maximum distance (@16 AWG) between the control panel
and the furthest annunciator.
• Use twisted pair cable with a characteristic impedance of approximately
120 ohms.
• EIA-485 circuit rated 5.5 VDC max., 60 mA max.
S.3 Providing Power to Annunciators
MPS-24A Main Power Supply. Connect
the power run for the ACS to +24V non-
resettable power on TB3 of MPS-24A, as
shown in accompanying illustration
(filtered, power-limited, 3 amps max).
MPS-24B Main Power Supply. Cut JP1 on
MPS-24B to make the circuit non-resettable
and connect the power run for the ACS to
MPS-24B TB2 Terminals 1 (+) and 2 (-) as
shown in the accompanying illustration
(filtered, power-limited, 200 milliamps
max).
TB2 TB3
+ -
TB3TB2
+ -
POWER LIMITED
+24R COMMON
+24 COMMON
POWER LIMITED
+24RST COMMON +24 COMMON
acs5000pwr.cdr
24 VDC
24 VDC
!
WARNING: Cut JP1 on MPS-24B to make this circuit non-resettable. Do
not use this connection to simultaneously power four-wire detectors and
annunciators. See the System 5000 Manual for location of JP1.
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