Instruction Manual

ACM-16ATF/ACM-32AF Manual PN 51480:A0 02/02/01
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Appendix C: MS-9200
Capabilities
The MS-9200 allows annunciators to be programmed by zone or by point.
The EIA-485 serial interface will allow up to 32 annunciators, but two-way
communications can occur with only one annunciator per address. The other
devices must be configured as “Receive Only”.
When the panel is programmed by zone, annunciator address 1 is available,
and the annunciator modules display the 56 software zones of the MS-9200.
When the panel is programmed by point, 198 points are available.
Annunciator addresses 1, 2, 3, and 4 can be used, but only address 1 is
supervised.
The furthest annunciator can be 6000 feet from the fire alarm control panel
(check power limitations).
CAUTION: Annunciators on the MS-9200 can not be used for manual
control of Control modules, NACs, or relays (except for global Silence
and Drill switches).
Connecting the EIA-485 Circuit
Communication between the MS-9200 and the annunciator modules is
accomplished over a two-wire EIA-485 serial interface.
• Power-limited and supervised.
• 6000 feet maximum distance (with 16 AWG wire) 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.
This communication circuit is supervised by the MS-9200. Loss of
communication results in “System Trouble” and “Module Failure”
indications at the CPU.
Note: “System Trouble” and “Module Failure” will also occur if the normally closed
supervisory path between TB1 Terminals on the annunciator is opened (or the
jumper has not been installed).
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