Honeywell MS-2 Manual Do Utilizador

Output Circuits

Installation

MS-2/MS-4 PN 51512:E 01/18/05

2.4.2 Special Application DC Power Output Connections

Resettable 24 VDC special application power is available on both the MS-2 and MS-4
control panels. Nonresettable 24 VDC special application power is available only on
the MS-4.

2.4.3 Relays

The MS-2 and MS-4 control panels provide an alarm and fail-safe trouble relay and the
MS-4 also provides a supervisory relay. Each Form-C relay is rated for 2 amps @
30VAC (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.

TB1

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) - MS-4 Only
24 VDC filtered, nonresettable special
application power can be obtained from
these terminals (power-limited)

+ - + -

ms-4tb1.cdr

TB
5

TB
6

TB
7

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.

ms4rela

y.cdr