RFL Electronics IMUX 2000 - Table 2-12. Characteristics of Power Supply Alarm I;O Modules

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
2.3.7 POWER SUPPLY ALARM I/O MODULES
There are six types of Power Supply Alarm I/O modules that can be used with the IMUX 2000 M-
DACS Multiplexer chassis. Some of the characteristics of these modules are listed in Table 2-13. A
rear panel view of the 9547-18801 Power Supply Alarm I/O module is shown in Figure 2-25.
Table 2-12. Characteristics of Power Supply Alarm I/O modules
Nomenclature RFL Part No. Application
(1)
PS Alarm I/O DC 9547-18801 Used in M-DACS chassis equipped with 250 Vdc power
supplies.
PS Alarm I/O AC 9547-18808 Used in M-DACS chassis equipped with 120 Vac power
supplies.
PS Alarm I/O 48/125DC 9547-18804 Used in M-DACS chassis equipped with 48/125 Vdc
power supplies.
PS Alarm I/O 88/265DC 9547-18805 Used in M-DACS chassis equipped with 220 Vac power
supplies.
PS Alarm I/O Hybrid 9547-18806 Used in M-DACS chassis equipped with a mix of ac and
dc power supplies.
PS Alarm I/O 24DC 9547-18807 Used in M-DACS chassis equipped with 24 Vdc, power
supplies.
NOTE 1. Only one Power Supply Alarm I/O module is used per chassis, and only when power supplies are used.
The Power Supply Alarm I/O module consists of an EMI filter, an SWC filter, relay logic, an alert
relay and a fail relay. These components can be seen in Figure 2-15, which also includes the power
supply module and the system status indicators that are associated with the IMUX 2000. These
indicators and relays respond to fault conditions on Common Modules, DACS module, M-DACS
channel modules, or the power supply module itself.
When a shelf is equipped with a main power supply and a redundant power supply it will have only
one Power Supply Alarm I/O module. The relays on the Power Supply Alarm I/O module will respond
to alarm and alert conditions from both power supply modules. This insures that Fail and/or Alert
monitoring continues even if one or the other supply is removed. Note that because the corresponding
relay contacts on the Main and Redundant supplies are connected in parallel, the ACO switches on
both must be switched “on” to activate the alarm cut-off, and both must be switched “off ” to de-
activate the alarm cut-off.
M-DACS-T1 RFL Electronics Inc.
October 16, 2012 2-45 (973) 334-3100