22 Flex 402 & Flex 404 Instruction Manual — P/N 52194:D4 3/27/2015
Installation Output Circuits
2.4.2 Special Application DC Power Output Connections
Resettable 24 VDC special application power is available on both the Flex 402 and Flex 404
control panels. Nonresettable 24 VDC special application power is available only on the Flex 404.
2.4.3 Relays
The Flex 402 and Flex 404 control panels provide an alarm and fail-safe trouble relay and the Flex
404 also provides a supervisory relay. Each Form-C relay is rated for 2 amps @ 30VDC
(resistive).
Note that relay connections may be power-limited or nonpower-limited, provided that 0.25”
minimum spacing is maintained between conductors of power-limited and nonpower-limited
circuits.
Figure 2.7 Special Application Power
4-Wire Smoke Detector Power (500 mA)
24 VDC filtered, resettable special application power for
4-wire smoke detectors can be obtained from these
terminals (power-limited)
Nonresettable Power (500 mA) -Flex 404Only
24 VDC filtered, nonresettable special application power
can be obtained from
these terminals (power-limited)
+ - + -
ms-4tb1.wmf
TB5
TB6
TB7
TROUBLE
C TRBL NORM
C NC NO
ALARM
SUPV
C NC NO
Figure 2.8 Relay Terminals
Note: Relay contacts are shown with
power applied to the panel and no active
troubles, alarms or supervisories.
The Trouble Relay is a fail-safe relay
which will transfer on any trouble or total
power failure.
ms4relay.wmf
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